Patent Application
20250105650
The disclosure relates to a voltage-adjustable charging circuit and an electronic device including the same.
An electronic device may have a circuit capable of converting a voltage. For example, the circuit capable of converting the voltage includes a buck converter, a boost converter, or a buck-boost converter.
The buck converter may decrease an input voltage. The boost converter may increase the input voltage. The buck-boost converter may increase or decrease the input voltage under control.
According to an example embodiment of the disclosure, an electronic device may include: a battery, an interface comprising circuitry capable of being electrically connected to an external power source and configured to receive power from the external power source, and a charging circuit configured to supply power to the battery based on an input voltage supplied through the interface, wherein the charging circuit may include a first buck circuit including a first switching element comprising a switch and a second switching element comprising a switch, a second buck circuit including a third switching element comprising a switch and a fourth switching element comprising a switch, and a boost circuit including a fifth switching element comprising a switch and a sixth switching element, comprising a switch, wherein the input voltage may be applied to an input node of the first switching element and an input node of the third switching element; one end of a first inductor may be connected to a first connection node between the first switching element and the second switching element of the first buck circuit; one end of a second inductor may be connected to a second connection node between the third switching element and the fourth switching element of the second buck circuit; an other end of the first inductor and an other end of the second inductor may be connected to a third connection node between the fifth switching element and the sixth switching element of the boost circuit; and the fifth switching element may be connected in parallel to the battery and a capacitor.
According to an example embodiment of the disclosure, the charging circuit may include: a first buck circuit including a first switching element comprising a switch and a second switching element comprising a switch, a second buck circuit including a third switching element comprising a switch and a fourth switching element comprising a switch, and a boost circuit including a fifth switching element comprising a switch and a sixth switching element comprising a switch, wherein an input voltage may be applied to an input node of the first switching element and an input node of the third switching element; one end of a first inductor may be connected to a first connection node between the first switching element and the second switching element of the first buck circuit; one end of a second inductor may be connected to a second connection node between the third switching element and the fourth switching element of the second buck circuit; an other end of the first inductor and an other end of the second inductor may be connected to a third connection node between the fifth switching element and the sixth switching element of the boost circuit; and the fifth switching element may be connected in parallel to a battery and a capacitor.
The above and other aspects, features and advantages of certain embodiments of the present disclosure will be more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which:
With regard to description of drawings, the same or similar components may be marked by the same or similar reference signs.
Referring to
In an embodiment, the electronic device 101 may receive power from an external electronic device (e.g., an adapter 201). In an embodiment, the electronic device 101 may charge the battery 140 based on the power. In an embodiment, the electronic device 101 may supply the power to the component 150.
In an embodiment, the processor 115 may include various processing circuitry and launch software (e.g., a program). In an embodiment, the processor 115 may control at least another component (e.g., hardware or software component) of the electronic device 101 connected to the processor 115. In an embodiment, the processor 115 may process and calculate various types of data. The processor 115 may include various processing circuitry and/or multiple processors. For example, as used herein, including the claims, the term “processor” may include various processing circuitry, including at least one processor, wherein one or more of at least one processor, individually and/or collectively in a distributed manner, may be configured to perform various functions described herein. As used herein, when “a processor”, “at least one processor”, and “one or more processors” are described as being configured to perform numerous functions, these terms cover situations, for example and without limitation, in which one processor performs some of recited functions and another processor(s) performs other of recited functions, and also situations in which a single processor may perform all recited functions. Additionally, the at least one processor may include a combination of processors performing various of the recited/disclosed functions, e.g., in a distributed manner. At least one processor may execute program instructions to achieve or perform various functions.
In an embodiment, the processor 115 may provide state information of the electronic device 101 to the controller 110. In an embodiment, the state information may include information about the operation state of the electronic device 101. In an embodiment, the operation state of the electronic device 101 may include an active state, a standby state (or, sleep state), or an off state. In an embodiment, the operation state of the electronic device 101 may include whether the adapter 201 is connected, or supply power of the adapter 201. In an embodiment, the state information may include information about a state of the battery 140. In an embodiment, the state of the battery 140 may include the number of battery cells of the battery 140.
In an embodiment, the controller 110 may include various circuitry and control a charging operation of the charging circuit 130 for the battery 140. In an embodiment, the controller 110 may control the charging operation of the charging circuit 130 for the battery 140 based on the required voltage of the battery 140. In an embodiment, the controller 110 may control the charging operation of the charging circuit 130 for the battery 140 based on the voltage of the supplied power.
In an embodiment, the interface 121 may include various circuitry and support one or more specified protocols capable of being used such that the electronic device 101 is electrically connected to an external electronic device (e.g., the adapter 201). For example, the interface 121 may include a universal serial bus (USB) interface. However, this is only an example, and various embodiments are not limited thereto. For example, another interface (e.g., a charging interface or an interface for wireless charging) other than the USB interface may be replaced with the configuration of the interface 121.
In an embodiment, the PDIC 125 may recognize a resistance value through the interface 121 (e.g., at least one specified pin (e.g., the CC pin) of the USB interface). In an embodiment, the PDIC 125 may identify that the electronic device 101 is electrically connected to the external electronic device (e.g., the adapter 201), based on a resistance value of a pull-up resistor and/or a pull-down resistor.
In an embodiment, the PDIC 125 may determine the role of the electronic device 101. In an embodiment, the PDIC 125 may determine the role (e.g., a source device or a sink device) of the electronic device 101 based on the resistance value.
In an embodiment, the PDIC 125 may obtain information of the external electronic device (e.g., the adapter 201) through the interface 121 (e.g., at least one specified pin of the USB interface (e.g., the CC pin)). In an embodiment, the information of the external electronic device (e.g., the adapter 201) may include vendor identification (ID) information and/or product ID information. In an embodiment, the information about the external electronic device (e.g., the adapter 201) may include information (e.g., source capability) about the supportable power and/or voltage.
In an embodiment, the PDIC 125 may request the external electronic device (e.g., the adapter 201) to supply power. In an embodiment, the PDIC 125 may request the external electronic device (e.g., the adapter 201) to supply power based on the required power. In an embodiment, the required power may be determined based on information (e.g., source capability) about the supportable power and/or voltage. In an embodiment, the required power may be determined based on information (e.g., a required voltage, a required current, and/or the number of battery cells) about the battery 140.
In an embodiment, the charging circuit 130 may supply power, which is delivered through the interface 121, to other components (e.g., the processor 115, the controller 110, the battery 140, and/or the component 150) of the electronic device 101. In an embodiment, the power delivered through the interface 121 may be power from the external electronic device (e.g., the adapter 201). Hereinafter, the power from the external electronic device (e.g., the adapter 201) may be referred to as “external power”.
In an embodiment, the charging circuit 130 may adjust (e.g., decrease (or buck), or increase (or boost)) the voltage value of the power delivered through the interface 121. In an embodiment, the charging circuit 130 may adjust the voltage value of the power to a voltage value for a specified component (e.g., the battery 140). In an embodiment, the charging circuit 130 may adjust the voltage value of the power based on a voltage value and/or a current value at a target point 167. In an embodiment, when the voltage value at an input point 161 is lower than the voltage value at the target point 167, the charging circuit 130 may increase the voltage value of the power. In an embodiment, when the voltage value at the input point 161 is higher than the voltage value at the target point 167, the charging circuit 130 may decrease the voltage value of the power. In an embodiment, the current value at an output point 163 may be the same as the sum of the current value at the target point 167 and the current value at a point 165.
In an embodiment, the battery 140 may be electrically connected to the charging circuit 130 and/or the converter 155 through a switch 141. In an embodiment, the battery 140 may be electrically disconnected from the charging circuit 130 and/or the converter 155 through the switch 141.
In an embodiment, the battery 140 may be charged based on the power input through the charging circuit 130. In an embodiment, the battery 140 may supply the charged power to the component 150.
In an embodiment, the battery 140 may include one or more battery cells. In an embodiment, the battery cell may operate in a specified voltage range (e.g., about 3 to about 4.35 volts (V)). In an embodiment, when the battery 140 includes ‘N’ battery cells, the battery 140 may operate in a voltage range of about “N×3” V to about “N×4.35” V. Here, ‘N’ is an integer greater than or equal to 1.
In an embodiment, the converter 155 may be a DC/DC converter.
In an embodiment, the converter 155 may supply power to the component 150. In an embodiment, the converter 155 may supply power having a voltage value for the component 150.
In an embodiment, the converter 155 may adjust the voltage at the point 165 so as to have the voltage value for the component 150. In an embodiment, the converter 155 may supply power having an adjusted voltage value to the component 150.
In an embodiment, the component 150 may be another component (e.g., a display, a speaker, or a communication module) including various circuitry mounted on the electronic device 101. In an embodiment, the component 150 may operate based on the power supplied through the converter 155.
Referring to
In an embodiment, an input voltage Vin may be applied to the two or more buck circuits 211, 213, and 215. In an embodiment, the input voltage Vin may correspond to a voltage of external power.
In an embodiment, each of the two or more buck circuits 211, 213, and 215 may be electrically connected to a different inductor among the two or more inductors 221, 223, and 225. For example, the buck circuit 211 (e.g., the first buck circuit 211) may be electrically connected to the inductor 221 (e.g., the first inductor 221); the buck circuit 213 (e.g., the second buck circuit 213) may be electrically connected to the inductor 223 (e.g., the second inductor 223); and, the buck circuit 215 (e.g., the third buck circuit 215) may be electrically connected to the inductor 225 (e.g., the third inductor 225).
In an embodiment, an output voltage Vout of the boost circuit 230 may be applied to an external component (e.g., the battery 140, the converter 155, and/or the component 150).
In an embodiment, the boost circuit 230 may be electrically connected to the two or more inductors 221, 223, and 225. In an embodiment, the boost circuit 230 may be electrically connected to the capacitor 240.
In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout. In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout using the boost circuit 230 and at least one buck circuit among the two or more buck circuits 211, 213, and 215. In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout based on a voltage value and/or a current value at the target point 167. In an embodiment, the output voltage Vout may be a voltage for charging the battery 140. In an embodiment, when the charging circuit 130 adjusts the input voltage Vin to the output voltage Vout, the capacitor 240 and at least one inductor, which is electrically connected to the buck circuit, from among the two or more inductors 221, 223, and 225 may be used.
In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout using one buck circuit. In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout using the buck circuit 211, the inductor 221, the boost circuit 230, and the capacitor 240. In an embodiment, when increasing the input voltage Vin, the charging circuit 130 may allow switches included in the boost circuit 230 to be alternately turned on and off. In an embodiment, when decreasing the input voltage Vin, the charging circuit 130 may allow switches included in the buck circuit 211 to be alternately turned on and off.
In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout using two buck circuits. In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout using the buck circuit 211, the buck circuit 213, the inductor 221, the inductor 223, the boost circuit 230, and the capacitor 240. In an embodiment, when increasing the input voltage Vin, the charging circuit 130 may allow switches included in the boost circuit 230 to be alternately turned on and off. In an embodiment, when decreasing the input voltage Vin, the charging circuit 130 may allow switches included in the buck circuit 211 and the buck circuit 213 to be alternately turned on and off. In an embodiment, a first control period for the switches of the buck circuit 211 may be the same as a second control period for the switches of the buck circuit 213. In an embodiment, a start time point of the first control period may be different from a start time point of the second control period. In an embodiment, a phase of the first control period may be different from a phase of the second control period. In an embodiment, the charging circuit 130 may control the switches of the buck circuit 211 from the first time point at the first control period, and may control the switches of the buck circuit 213 from the second time point at the second control period. In an embodiment, a phase difference between the first control period and the second control period may correspond to 180 degrees.
In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout using ‘M’ or more buck circuits (‘M’ is an integer greater than or equal to 3). In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout using the ‘M’ buck circuits 211, 213, and 215, the ‘M’ inductors 221, 223, and 225, the boost circuit 230, and the capacitor 240. In an embodiment, when increasing the input voltage Vin, the charging circuit 130 may allow switches included in the boost circuit 230 to be alternately turned on and off. In an embodiment, when decreasing the input voltage Vin, the charging circuit 130 may allow the switches included in each of the ‘M’ buck circuits to be alternately turned on and off. In an embodiment, when ‘M’ is 3, the first control period for the switches of the buck circuit 211, the second control period for the switches of the buck circuit 213, and the third control period for the switches of the buck circuit 215 may be the same as each other. In an embodiment, the start time points of the first control period, the second control period, and the third control period may be different from each other. In an embodiment, the phase of the first control period, the phase of the second control period, and the phase of the third control period may be different from each other. In an embodiment, the charging circuit 130 may control the switches of the buck circuit 211 from the first time point at the first control period, may control the switches of the buck circuit 213 from the second time point at the second control period, and may control the switches of the buck circuit 215 from the third time point at the third control period. In an embodiment, the phase difference between adjacent control periods may correspond to a value obtained by dividing 360 degrees by ‘M’. In an embodiment, a phase difference between the first control period and the second control period may correspond to 120 degrees. In an embodiment, the phase difference between the second control period and the third control period may correspond to 120 degrees.
In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout based on the voltage value of the input voltage Vin. In an embodiment, the charging circuit 130 may adjust the input voltage Vin to the output voltage Vout based on the voltage value of the input voltage Vin and the required voltage of the battery 140. In an embodiment, the charging circuit 130 may decrease or increase the input voltage Vin based on the voltage value of the input voltage Vin and the required voltage of the battery 140. In an embodiment, the charging circuit 130 may decrease or increase the input voltage Vin based on the required voltage of the battery 140 and the voltage value of the input voltage Vin as shown in Table 1 below.
In Table 1, when the battery voltage range is a first voltage range (e.g., about 6 to about 8.8 V), the battery 140 may be a battery in which two battery cells are connected in series. When the battery voltage range is a second voltage range (e.g., about 9 to about 13.2 V), the battery 140 may be a battery in which three battery cells are connected in series. When the battery voltage range is a third voltage range (e.g., about 12 to about 17.6 V), the battery 140 may be a battery in which four battery cells are connected in series.
Referring to Table 1, when the input voltage Vin is a first voltage (e.g., approximately 5 V) and the battery cells are 2, 3, or 4 (e.g., the battery voltage range is the first voltage range, the second voltage range, or the third voltage range), the charging circuit 130 may increase (boost) the input voltage Vin.
When the input voltage Vin is a second voltage (e.g., about 9 V) and the number of battery cells is 2 (e.g., the battery voltage range is the first voltage range), the charging circuit 130 may decrease (buck) the input voltage Vin using one buck circuit. When the input voltage Vin is the second voltage (e.g., about 9 V) and the number of battery cells is 3 (e.g., the battery voltage range is the second voltage range), the charging circuit 130 may decrease (buck) the input voltage Vin using one buck circuit or may increase (boost) the input voltage Vin. When the input voltage Vin is the second voltage (e.g., about 9 V) and the number of battery cells is 4 (e.g., the battery voltage range is the third voltage range), the charging circuit 130 may increase (boost) the input voltage Vin. When the input voltage Vin is a third voltage (e.g., about 15 V) and the number of battery cells is 2 or 3 (e.g., the battery voltage range is the first voltage range or the second voltage range), the charging circuit 130 may decrease (buck) the input voltage Vin using one buck circuit. When the input voltage Vin is the third voltage (e.g., about 15 V) and the number of battery cells is 4 (e.g., the battery voltage range is a third voltage range), the charging circuit 130 may decrease (buck) the input voltage Vin using one buck circuit or may increase (boost) the input voltage Vin.
When the input voltage Vin is a fourth voltage (e.g., about 20 V) and the number of battery cells is 2, 3, or 4 (e.g., the battery voltage range is the first voltage range, the second voltage range, or the third voltage range), the charging circuit 130 may decrease (buck) the input voltage Vin using two buck circuits.
When the input voltage Vin is a fifth voltage (e.g., about 28 V) and the number of battery cells is 2, 3, or 4 (e.g., the battery voltage range is the first voltage range, the second voltage range, or the third voltage range), the charging circuit 130 may decrease (buck) the input voltage Vin using two buck circuits.
When the input voltage Vin is the sixth voltage (e.g., about 36 V) and the number of battery cells is 2, 3, or 4 (e.g., the battery voltage range is the first voltage range, the second voltage range, or the third voltage range), the charging circuit 130 may decrease (buck) the input voltage Vin using three buck circuits.
When the input voltage Vin is a seventh voltage (e.g., about 48 V) and the number of battery cells is 2, 3, or 4 (e.g., the battery voltage range is the first voltage range, the second voltage range, or the third voltage range), the charging circuit 130 may decrease (buck) the input voltage Vin using four buck circuits. The numerical values of input voltages and battery voltage ranges described in Table 1 above are following an embodiment, and various embodiments are not limited thereto. The numerical values of input voltages and the battery voltage range may vary depending on situations.
Referring to
In an embodiment, the buck circuit 310 may include two switches 311 and 315. In an embodiment, an input voltage may be applied to one end of the switch 311. In an embodiment, the other end of the switch 311 may be electrically connected to one end of the switch 315. In an embodiment, the other end of the switch 315 may be electrically connected to ground. In an embodiment, the other end of the switch 311 and one end of the switch 315 may be electrically connected to one end of the inductor 317. For example, one end of the inductor 317 may be connected to a connection node between the other end of the switch 311 and one end of the switch 315.
In an embodiment, the buck circuit 320 may include two switches 321 and 325. In an embodiment, an input voltage may be applied to one end of the switch 321. In an embodiment, the other end of the switch 321 may be electrically connected to one end of the switch 325. In an embodiment, the other end of the switch 325 may be electrically connected to ground. In an embodiment, the other end of the switch 321 and one end of the switch 325 may be electrically connected to one end of the inductor 327. For example, one end of the inductor 327 may be connected to a connection node between the other end of the switch 321 and one end of the switch 325.
In an embodiment, the boost circuit 330 may include two switches 331 and 335. In an embodiment, one end of the switch 331 may be electrically connected to one end of the capacitor 350. In an embodiment, the voltage at the one end of the switch 331 and the voltage at the one end of the capacitor 350 may have an output voltage. In an embodiment, the one end of the switch 331 and the one end of the capacitor 350 may be electrically connected to an external component (e.g., the battery 140 and/or the converter 155). In an embodiment, the other end of the switch 331 may be electrically connected to one end of the switch 335. In an embodiment, the other end of the switch 335 may be electrically connected to ground. In an embodiment, the other end of the switch 331 and the one end of the switch 335 may be electrically connected to the other end of the inductor 317. In an embodiment, the other end of the switch 331 and the one end of the switch 335 may be electrically connected to the other end of the inductor 327. For example, the other end of the inductor 317 and the other end of the inductor 327 may be connected to a connection node between the other end of the switch 331 and one end of the switch 335.
In an embodiment, the charging circuit 130 may allow the switches 331 and 335 to be alternately turned on and off. In an embodiment, when increasing the input voltage, the charging circuit 130 may control the switches 331 and 335 such that the switches 331 and 335 are alternately turned on and off. In an embodiment, when the switch 331 is turned on, the charging circuit 130 may control the switches 331 and 335 such that the switch 335 is turned off. In an embodiment, when the switch 331 is turned off, the charging circuit 130 may control the switches 331 and 335 such that the switch 335 is turned on.
In an embodiment, the charging circuit 130 may control the switches 331 and 335 such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the switches 331 and 335 may be controlled based on an on/off ratio such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the on/off ratio may be a ratio between a period, in which the switch 331 is turned on during a specified period, and a period in which the switch 331 is turned off during the specified period.
In an embodiment, while the switches 331 and 335 are alternately controlled (or, while the input voltage is increased), the charging circuit 130 may set the on and off of the switches 311, 315, 321, and 325 of at least one buck circuit among the two buck circuits 310 and 320. In an embodiment, the charging circuit 130 may allow the switches 321 and 325 to be turned off, by allowing the switch 311 to be turned on and allowing the switch 315 to be turned off such that a voltage is applied to the other end of the switch 331 through the buck circuit 310. In an embodiment, the charging circuit 130 may allow the switches 311 and 315 to be turned off, by allowing the switch 321 to be turned on and allowing the switch 325 to be turned off such that a voltage is applied to the other end of the switch 331 through the buck circuit 320. In an embodiment, the charging circuit 130 may allow the switch 321 to be turned on and may allow the switch 325 to be turned off such that a voltage is applied to the other end of the switch 331 through the buck circuit 310 and the buck circuit 320.
In an embodiment, the charging circuit 130 may allow the switches 311 and 315 to be alternately turned on and off. In an embodiment, when decreasing the input voltage using the buck circuit 310, the charging circuit 130 may control the switches 311 and 315 such that the switches 311 and 315 are alternately turned on and off. In an embodiment, when the switch 311 is turned on, the charging circuit 130 may control the switches 311 and 315 such that the switch 315 is turned off. In an embodiment, when the switch 311 is turned off, the charging circuit 130 may control the switches 311 and 315 such that the switch 315 is turned on.
In an embodiment, the charging circuit 130 may control the switches 311 and 315 such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the switches 311 and 315 may be controlled based on an on/off ratio such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the on/off ratio may be a ratio between a period, in which the switch 311 is turned on during a specified period, and a period in which the switch 311 is turned off during the specified period.
In an embodiment, while the switches 311 and 315 are alternately controlled (or while the input voltage is decreased), the charging circuit 130 may set the on and off of the switches 321 and 325 of the buck circuit 320 and the switches 331 and 335 of the boost circuit 330. In an embodiment, the charging circuit 130 may allow the switches 321 and 325 to be turned off by allowing the switch 331 to be turned on and allowing the switch 335 to be turned off.
In an embodiment, the charging circuit 130 may allow the switches 321 and 325 to be alternately turned on and off. In an embodiment, when decreasing the input voltage using the buck circuit 320, the charging circuit 130 may control the switches 321 and 325 such that the switches 321 and 325 are alternately turned on and off. In an embodiment, when the switch 321 is turned on, the charging circuit 130 may control the switches 321 and 325 such that the switch 325 is turned off. In an embodiment, when the switch 321 is turned off, the charging circuit 130 may control the switches 321 and 325 such that the switch 325 is turned on.
In an embodiment, the charging circuit 130 may control the switches 321 and 325 such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the switches 321 and 325 may be controlled based on an on/off ratio such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the on/off ratio may be a ratio between a period, in which the switch 321 is turned on during a specified period, and a period in which the switch 321 is turned off during the specified period.
In an embodiment, while the switches 321 and 325 are alternately controlled (or while the input voltage is decreased), the charging circuit 130 may set the on and off of the switches 311 and 315 of the buck circuit 310 and the switches 331 and 335 of the boost circuit 330. In an embodiment, the charging circuit 130 may allow the switches 311 and 315 to be turned off by allowing the switch 331 to be turned on and allowing the switch 335 to be turned off.
In an embodiment, the charging circuit 130 may allow the switches 311, 315, 321, and 325 to be alternately turned on and off. In an embodiment, when the decreasing an input voltage using the buck circuit 310 and the buck circuit 320, the charging circuit 130 may control the switches 311, 315, 321, and 325 such that the switches 311 and 315 are alternately turned on and off, and the switches 321 and 325 are alternately turned on and off. In an embodiment, when the switch 311 is turned on, the charging circuit 130 may control the switches 311 and 315 such that the switch 315 is turned off. When the switch 321 is turned on, the charging circuit 130 may control the switches 321 and 325 such that the switch 325 is turned off. In an embodiment, when the switch 311 is turned off, the charging circuit 130 may control the switches 311 and 315 such that the switch 315 is turned on. When the switch 321 is turned off, the charging circuit 130 may control the switches 321 and 325 such that the switch 325 is turned on.
In an embodiment, the charging circuit 130 may control the switches 311, 315, 321, and 325 such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the switches 311, 315, 321, and 325 may be controlled based on a first on/off ratio and a second on/off ratio such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the first on/off ratio may be a ratio between a period, in which the switch 311 is turned on during a specified period, and a period in which the switch 311 is turned off during the specified period. In an embodiment, the second on/off ratio may be a ratio between a period, in which the switch 321 is turned on during a specified period, and a period in which the switch 321 is turned off during the specified period.
In an embodiment, while the switches 311, 315, 321, and 325 are alternately controlled (or while the input voltage is decreased), the charging circuit 130 may set the on and off of the switches 331 and 335 of the boost circuit 330. In an embodiment, the charging circuit 130 may allow the switch 331 to be turned on and may allow the switch 335 to be turned off.
In an embodiment, while the switches 311, 315, 321, and 325 are alternately controlled (or while the input voltage is decreased), the charging circuit 130 may control the switches 311 and 315 at a first control period and may control the switches 321 and 325 at a second control period. In an embodiment, the first control period may be the same as the second control period. In an embodiment, a start time point of the first control period may be different from a start time point of the second control period. In an embodiment, a phase of the first control period may be different from a phase of the second control period. In an embodiment, the charging circuit 130 may control the switches 311 and 315 from the first time point at the first control period, and may control the switches 321 and 325 from the second time point at the second control period. In an embodiment, a phase difference between the first control period and the second control period may correspond to 180 degrees.
In
Referring to
It may be seen that I1 increases while the switch 311 is turned on, and I1 decreases while the switch 311 is turned off. It may be seen that I2 increases while the switch 321 is turned on, and I2 decreases while the switch 321 is turned off. It may be seen that I3 has little ripple as the switches 311 and 321 are alternately turned on and off at the same period.
In an embodiment, the buck circuit 360 may include two switches 361 and 365. In an embodiment, an input voltage may be applied to one end of the switch 361. In an embodiment, the other end of the switch 361 may be electrically connected to one end of the switch 365. In an embodiment, the other end of the switch 365 may be electrically connected to ground. In an embodiment, the other end of the switch 361 and one end of the switch 365 may be electrically connected to one end of the inductor 367.
In an embodiment, when increasing an input voltage, the charging circuit 130 may set the on and off of the switches 311, 315, 321, 325, 361, and 365 of at least one buck circuit among the three buck circuits 310, 320, and 360. In an embodiment, when a voltage is applied to the other end of the switch 331 through the buck circuit 360, the charging circuit 130 may allow the switch 361 to be turned on and may allow the switch 365 to be turned off. In an embodiment, when a voltage is not applied to the other end of the switch 331 through the buck circuit 360, the charging circuit 130 may allow the switches 361 and 365 to be turned off.
In an embodiment, the charging circuit 130 may allow the switches 361 and 365 to be alternately turned on and off. In an embodiment, when decreasing the input voltage using the buck circuit 360, the charging circuit 130 may control the switches 361 and 365 such that the switches 361 and 365 are alternately turned on and off. In an embodiment, when the switch 361 is turned on, the charging circuit 130 may control the switches 361 and 365 such that the switch 365 is turned off. In an embodiment, when the switch 361 is turned off, the charging circuit 130 may control the switches 361 and 365 such that the switch 365 is turned on.
In an embodiment, the charging circuit 130 may control the switches 361 and 365 such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the switches 361 and 365 may be controlled based on an on/off ratio such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the on/off ratio may be a ratio between a period, in which the switch 361 is turned on during a specified period, and a period in which the switch 361 is turned off during the specified period.
In an embodiment, when two or more buck circuits are used to decrease the input voltage, control periods for the buck circuits may be the same as each other. In an embodiment, when two or more buck circuits are used to decrease the input voltage, phases between the control periods for the buck circuits may be different from each other. In an embodiment, when two or more buck circuits are used to decrease the input voltage, a phase difference between the control periods may correspond to a value obtained by dividing 360 degrees by the two or more buck circuits.
In an embodiment, the buck circuit 370 may include two switches 371 and 375. In an embodiment, an input voltage may be applied to one end of the switch 371. In an embodiment, the other end of the switch 371 may be electrically connected to one end of the switch 375. In an embodiment, the other end of the switch 375 may be electrically connected to ground. In an embodiment, the other end of the switch 371 and one end of the switch 375 may be electrically connected to one end of the inductor 377.
In an embodiment, when increasing an input voltage, the charging circuit 130 may set the on and off of the switches 311, 315, 321, 325, 361, 365, 371, and 375 of at least one buck circuit among the four buck circuits 310, 320, 360, and 370. In an embodiment, when a voltage is applied to the other end of the switch 331 through the buck circuit 370, the charging circuit 130 may allow the switch 371 to be turned on and may allow the switch 375 to be turned off. In an embodiment, when a voltage is not applied to the other end of the switch 331 through the buck circuit 370, the charging circuit 130 may allow the switches 371 and 375 to be turned off.
In an embodiment, the charging circuit 130 may allow the switches 371 and 375 to be alternately turned on and off. In an embodiment, when decreasing the input voltage using the buck circuit 370, the charging circuit 130 may control the switches 371 and 375 such that the switches 371 and 375 are alternately turned on and off. In an embodiment, when the switch 371 is turned on, the charging circuit 130 may control the switches 371 and 375 such that the switch 375 is turned off. In an embodiment, when the switch 371 is turned off, the charging circuit 130 may control the switches 371 and 375 such that the switch 375 is turned on.
In an embodiment, the charging circuit 130 may control the switches 371 and 375 such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the switches 371 and 375 may be controlled based on an on/off ratio such that the voltage of one end of the switch 331 has a specified voltage. In an embodiment, the on/off ratio may be a ratio between a period, in which the switch 371 is turned on during a specified period, and a period in which the switch 371 is turned off during the specified period.
In an embodiment, when two or more buck circuits are used to decrease the input voltage, control periods for the buck circuits may be the same as each other. In an embodiment, when two or more buck circuits are used to decrease the input voltage, phases between the control periods for the buck circuits may be different from each other. In an embodiment, when two or more buck circuits are used to decrease the input voltage, a phase difference between the control periods may correspond to a value obtained by dividing 360 degrees by the two or more buck circuits.
Operations of
Referring to
In operation 520, the controller 110 may charge the battery 140 based on the context information.
In an embodiment, the controller 110 may control the charging circuit 130 so as to charge the battery 140 based on the context information. In an embodiment, the controller 110 may control the charging circuit 130 so as to output an output voltage corresponding to the required voltage of the battery 140. In an embodiment, the controller 110 may control the charging circuit 130 such that the charging circuit 130 adjusts (e.g., decreases or increases) an input voltage.
In an embodiment, the charging circuit 130 may adjust (e.g., decrease or increase) the input voltage under the control of the controller 110. In an embodiment, the charging circuit 130 may decrease the input voltage using at least one buck circuit among ‘M’ buck circuits.
Operations of
Referring to
In operation 620, the controller 110 may determine whether the state of the electronic device 101 is a first state. In an embodiment, the controller 110 may determine whether the state of the electronic device 101 is an active state.
The controller 110 may perform operation 630 based on determining in operation 620 that the state of the electronic device 101 is the first state (e.g., an active state). The controller 110 may perform operation 640 based determining in operation 620 that the state of the electronic device 101 is not the first state (e.g., an active state).
In operation 630, the controller 110 may charge the battery 140 based on the context information.
In an embodiment, the controller 110 may control the charging circuit 130 so as to charge the battery 140 based on the context information. In an embodiment, the controller 110 may control the charging circuit 130 so as to output an output voltage corresponding to the required voltage of the battery 140. In an embodiment, the controller 110 may control the charging circuit 130 such that the charging circuit 130 adjusts (e.g., decreases or increases) the input voltage.
In an embodiment, the charging circuit 130 may adjust (e.g., decrease or increase) the input voltage under the control of the controller 110. In an embodiment, the charging circuit 130 may decrease the input voltage using at least one buck circuit among ‘M’ buck circuits.
In operation 640, the controller 110 may charge the battery 140 based on a specified mode.
In an embodiment, when the decrease in the input voltage is required to charge the battery 140, the controller 110 may allow the controller 110 to decrease the input voltage using a buck circuit.
According to an example embodiment of the disclosure, an electronic device may include: a battery, an interface comprising circuitry capable of being electrically connected to an external power source and configured to receive power from the external power source, and a charging circuit configured to supply power to the battery based on an input voltage supplied through the interface. According to an example embodiment, the charging circuit may include: a first buck circuit including a first switching element comprising a switch and a second switching element comprising a switch, a second buck circuit including a third switching element comprising a switch and a fourth switching element comprising a switch, and a boost circuit including a fifth switching element comprising a switch and a sixth switching element comprising a switch. In an example embodiment, an input voltage may be applied to an input node of the first switching element and an input node of the third switching element. In an example embodiment, one end of a first inductor may be connected to a first connection node between the first switching element and the second switching element of the first buck circuit. In an example embodiment, one end of a second inductor may be connected to a second connection node between the third switching element and the fourth switching element of the second buck circuit. In an example embodiment, an other end of the first inductor and an other end of the second inductor may be connected to a third connection node between the fifth switching element and the sixth switching element of the boost circuit. In an example embodiment, the fifth switching element may be connected in parallel to the battery and a capacitor.
Compared to a case where one buck circuit is provided, an inductor having a lower value of inductance may be used by connecting two buck circuits to one boost circuit. Moreover, compared to a case where two boost circuits are provided, the number of mounted capacitors may be reduced by connecting two buck circuits to one boost circuit. Furthermore, compared to a case where one buck circuit is provided, an inductor having a lower value of inductance may be used by connecting two buck circuits to one boost circuit.
The ripple of an output current may be reduced as two buck circuits decrease an input voltage using different phase differences.
Power loss may be reduced by selectively determining buck circuits, which are used to decrease the input voltage, from among two buck circuits.
According to an example embodiment, the charging circuit may include a third buck circuit including a seventh switching element comprising a switch and an eighth switching element comprising a switch. In an example embodiment, one end of a third inductor may be connected to a fourth connection node between the seventh switching element and the eighth switching element of the third buck circuit. In an example embodiment, an other end of the third inductor may be connected to the third connection node.
According to an example embodiment, the charging circuit may include: a fourth buck circuit including a ninth switching element comprising a switch and a tenth switching element comprising a switch. In an example embodiment, one end of a fourth inductor may be connected to a fifth connection node between the ninth switching element and the tenth switching element of the fourth buck circuit. In an example embodiment, an other end of the fourth inductor may be connected to the third connection node.
According to an example embodiment, the charging circuit may be configured to output a voltage value of the input voltage as a first adjustment value by controlling on and off of the fifth switching element and the sixth switching element of the boost circuit.
According to an example embodiment, the charging circuit may be configured to output the voltage value of the input voltage as the second adjustment value by controlling the first buck circuit and/or the second buck circuit.
According to an example embodiment, the charging circuit may be configured to output the input voltage as the second adjustment value using one buck circuit among the first buck circuit or the second buck circuit based on the voltage value being a first voltage value.
According to an example embodiment, the charging circuit may be configured to output the input voltage as the second adjustment value using the first buck circuit and the second buck circuit based on the voltage value being a second voltage value. In an example embodiment, the second voltage value may be higher than the first voltage value.
According to an example embodiment, the charging circuit may be configured to control the first buck circuit and the second buck circuit such that a first control period for the first buck circuit and a second control period for the second buck circuit have a specified phase difference.
In an example embodiment, the specified phase difference may be based on a number of buck circuits included in the charging circuit.
According to an example embodiment, the charging circuit may be configured to output the input voltage as the second adjustment value using one buck circuit among the first buck circuit or the second buck circuit, based on a power mode of the electronic device being a specified mode.
According to an example embodiment, an electronic device may include: a power delivery integrated circuit (PDIC) configured to identify the input voltage of power supplied by the external power source based on the interface being electrically connected to the external power source. According to an example embodiment, the charging circuit may be configured to control at least one of the first buck circuit, the second buck circuit, and/or the boost circuit based on the identified input voltage.
The electronic device according to various embodiments may be one of various types of electronic devices. The electronic devices may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, a home appliance, or the like. According to an embodiment of the disclosure, the electronic devices are not limited to those described above.
It should be appreciated that various embodiments of the present disclosure and the terms used therein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment. With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It is to be understood that a singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, each of such phrases as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C,” may include any one of, or all possible combinations of the items enumerated together in a corresponding one of the phrases. As used herein, such terms as “1st” and “2nd,” or “first” and “second” may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). It is to be understood that if an element (e.g., a first element) is referred to, with or without the term “operatively” or “communicatively”, as “coupled with,” “coupled to,” “connected with,” or “connected to” another element (e.g., a second element), the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via a third element.
As used in connection with various embodiments of the disclosure, the term “module” may include a unit implemented in hardware, software, or firmware, or any combination thereof, and may interchangeably be used with other terms, for example, “logic,” “logic block,” “part,” or “circuitry”. A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions. For example, according to an embodiment, the module may be implemented in a form of an application-specific integrated circuit (ASIC).
Various embodiments as set forth herein may be implemented as software (e.g., the program) including one or more instructions that are stored in a storage medium (e.g., internal memory or external memory) that is readable by a machine (e.g., the electronic device 101). For example, a processor (e.g., the processor 115) of the machine (e.g., the electronic device 101) may invoke at least one of the one or more instructions stored in the storage medium, and execute it, with or without using one or more other components under the control of the processor. This allows the machine to be operated to perform at least one function according to the at least one instruction invoked. The one or more instructions may include a code generated by a compiler or a code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Wherein, the “non-transitory” storage medium is a tangible device, and may not include a signal (e.g., an electromagnetic wave), but this term does not differentiate between where data is semi-permanently stored in the storage medium and where the data is temporarily stored in the storage medium.
According to an embodiment, a method according to various embodiments of the disclosure may be included and provided in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or be distributed (e.g., downloaded or uploaded) online via an application store (e.g., PlayStore™), or between two user devices (e.g., smart phones) directly. If distributed online, at least part of the computer program product may be temporarily generated or at least temporarily stored in the machine-readable storage medium, such as memory of the manufacturer's server, a server of the application store, or a relay server.
According to various embodiments, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in different components. According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, a plurality of components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to various embodiments, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added.
While the disclosure has been illustrated and described with reference to various example embodiments, it will be understood that the various example embodiments are intended to be illustrative, not limiting. It will be further understood, by those skilled in the art, that various changes in form and detail may be made without departing from the true spirit and full scope of the disclosure, including the appended claims and their equivalents. It will also be understood that any of the embodiment(s) described herein may be used in conjunction with any other embodiment(s) described herein.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2022-0077384 | Jun 2022 | KR | national |
| 10-2022-0104661 | Aug 2022 | KR | national |
This application is a continuation of International Application No. PCT/KR2023/007691, designating the United States, filed on Jun. 5, 2023, in the Korean Intellectual Property Receiving Office and claiming priority to Korean Patent Application Nos. 10-2022-0077384, filed on Jun. 24, 2022, and 10-2022-0104661, filed on Aug. 22, 2022, the disclosures of each of which are incorporated by reference herein in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/KR2023/007691 | Jun 2023 | WO |
| Child | 18970275 | US |
