The present invention relates to a power supply system, and more particularly to a power supply system having two power supplies connected in parallel. The present invention also relates to a power supplying control method of a power supply system having two power supplies connected in parallel.
The main function of a power supply arranged in a computer is firstly converting an AC power to a DC power, and then providing the DC power to a motherboard or other peripheral devices. Referring to
However, because user may not switch off the AC power of the power supply after the shutdown of the computer, the Stand-By-Power (e.g., +5VSB) is kept providing to the motherboard. In other words, the Stand-By-Power (e.g., +5VSB) is always outputted from the power supply 80 to the motherboard 90 if the computer system is off but the AC power is connected to the power supply 80. After a long-term period, the circuit related to the Stand-By-Power in the power supply 80 accordingly may be easier damaged than other circuit parts in the power supply 80. Once a portion of the power supply 80 is damaged, the computer system cannot be power on successfully.
Therefore, the present invention relates to a power supply system having two power supplies connected in parallel.
The present invention provides a power supply system adopting two power supplies connected in parallel, comprising: a first power supply comprising a first voltage-output terminal; a second power supply comprising a second voltage-output terminal; a first switch circuit comprising an input terminal connected to the first voltage-output terminal; a second switch circuit comprising an input terminal connected to the second voltage-output terminal; and, a plug comprising a first pin connected to both an output terminal of the first switch circuit and an output terminal of the second switch circuit; wherein the voltage outputted from the first voltage-output terminal is equal to the voltage outputted from the second voltage-output terminal.
The present invention provides a computer with a power supply system adopting two power supplies connected in parallel, comprising: a first power supply comprising a first voltage-output terminal; a second power supply comprising a second voltage-output terminal; a first switch circuit comprising an input terminal connected to the first voltage-output terminal; a second switch circuit comprising an input terminal connected to the second voltage-output terminal; a plug comprising a first pin connected to both an output terminal of the first switch circuit and an output terminal of the second switch circuit; and, a motherboard comprising a jack disposed therein a first pin connected to the first pin of the plug; wherein the voltage outputted from the first voltage-output terminal is equal to the voltage outputted from the second voltage-output terminal.
The present invention provides a power supplying control method of a computer system for use with a first power supply and a second power supply both providing a first voltage to a motherboard, comprising steps of: detecting whether the first power supply starts to build the first voltage; outputting the first voltage, built by the first power supply, to a first pin when the first power supply starts to build the first voltage; detecting whether the second power supply starts to build the first voltage; outputting the first voltage, built by the second power supply, to the first pin when the second power supply starts to build the first voltage; and, outputting the first voltage power to the motherboard via the first pin.
The above objects and advantages of the present invention will become more readily apparent to those ordinarily skilled in the art after reviewing the following detailed description and accompanying drawings, in which:
Referring to
Moreover, the pin set of the power supply A (24 pins A, 4 pins A, VGA pins A, HD pins A) are connected to a first switch set 158 arranged on the power translating board 140. The pin set of the power supply B (24 pins B, 4 pins B, VGA pins B, HD pins B) are connected to a second switch set 168 on the power translating board 140. Moreover, the parallel connection of the power supply A and the power supply B is achieved via connecting the switches in the first switch set 158 and the corresponding switches in the second switch set 168. Moreover, because of the parallel connection of the power supply A and the power supply B, the 24 pins A and the 24 pins B are together connected to the 24-pin plug 82; the 4 pins A and the 4 pins B are together connected to the 4-pin plug 84; the VGA pins A and the VGA pins B are together connected to the VGA plug 86; and the HD pins A and the HD pins B are together connected to the HD plug 88. As mentioned above, the jack set of the motherboard 142 (24-pin jack 92, 4-pin jack 94, VGA jack 96, HD jack 98) are respectively connected to the plug set of the power translating board 140 (24-pin plug 82, 4-pin plug 84, VGA plug 86, HD plug 88).
Before the motherboard 142 is active, only the Stand-By-Power (e.g., +5VSB) is provided from the power supplies A and B to the motherboard 142. After the motherboard 142 is active resulted from the power button of the computer is pressed, the power supplies A and B are automatically activated by the motherboard 142, and the specific voltages (+3V, +5V, and +12V), demanded of the motherboard 142, are started to be built by the power supplies A and B and then outputted to the motherboard 142 via a plurality of voltage-output terminal in the pin set of the power supplies A and B. That is, the specific voltages (+3V, +5V, and +12V) built by the power supply A, are firstly outputted from the pin set of the power supply A, and then transmitted to the motherboard 142 via the power translating board 140. Similarly, the specific voltages (+3V, +5V, and +12V) built from the power supply B, are firstly outputted from the pin set of the power supply B, and then transmitted to the motherboard 142 via the power translating board 140. Because the power supplies A and B are connected in parallel, the motherboard 142 can get the specific voltages (+3V, +5V, and +12V) via the power translating board 140 if either one of the power supplies A and B is successfully active and starts to build the specific voltages (+3V, +5V, and +12V).
Referring to
Moreover, the first switch set 158 comprises 7 switch circuits (SW-A1, SW-A2, SW-A3, SW-A4, SW-A5, SW-A6, SW-A7); the second switch set 168 comprises 7 switch circuits (SW-B1, SW-B2, SW-B3, SW-B4, SW-B5, SW-B6, SW-B7). Moreover, a +3V-output terminal (for outputting +3V) in the 24 pins C is connected to the 24-pin plug 82 via the switch circuit SW-A1; a +5V-output terminal (for outputting +5V) in the 24 pins C is connected to the 24-pin plug 82 via the switch circuit SW-A2; a +12V-output terminal (for outputting +12V) in the 24 pins C is connected to the 24-pin plug 82 via the switch circuit SW-A3; a +5VSB-output terminal (for outputting a Stand-By-Power of +5VSB) in the 24 pins C is connected to the 24-pin plug 82 via the switch circuit SW-A4; the +12V-output terminal in the 4 pins C is connected to the 4-pin plug 84 via the switch circuit SW-A5; the +12V-output terminal in the VGA pins C is connected to the VGA plug 86 via the switch circuit SW-A6; and the +12V-output terminal in the HD pins C is connected to the HD plug 88 via the switch circuit SW-A7.
Similarly, the +3V-output terminal in the 24 pins D is connected to the 24-pin plug 82 via the switch circuit SW-B1; the +5V-output terminal in the 24 pins D is connected to the 24-pin plug 82 via the switch circuit SW-B2; the +12V-output terminal in the 24 pins D is connected to the 24-pin plug 82 via the switch circuit SW-B3; the +5VSB-output terminal in the 24 pins D is connected to the 24-pin plug 82 via the switch circuit SW-B4; the +12V-output terminal in the 4 pins D is connected to the 4-pin plug 84 via the switch circuit SW-B5; the +12V-output terminal in the VGA pins D is connected to the VGA plug 86 via the switch circuit SW-B6; and the +12V-output terminal in the HD pins D is connected to the HD plug 88 via the switch circuit SW-B7.
When the motherboard 142 (
In the embodiment of the present invention, an OR gate 162 is arranged on the power translating board 140, where the Power Good Signal (PG-A) and the Power Good Signal (PG-B) are transmitted to two input terminals of an OR gate 162 and an output terminal of the OR gate 162 is connected to the 24-pin plug 82. Because the function of the OR gate 162, the Power Good Signal (PG) will be outputted from the output terminal of the OR gate 162 and then further transmitted to the motherboard 142 sequentially via the 24-pin plug 82 and the 24-pin jack 92 if only either one of the power supplies A and B is at the stable state. In other words, the power supply system of the present invention is at a stable state if one of the two power supplies A and B is at the stable state, and the motherboard 142 can be aware of whether the power supply system (constructed by the power supplies A and B) is at stable state based on the Power Good Signal (PG). Moreover, it is understood the OR gate 162 can be replaced by an AND gate, and accordingly the Power Good Signal (PG) is outputted from the output terminal of the AND gate and then further transmitted to the motherboard 142 if both the power supplies A and B are at the stable state.
Referring to
Referring to
For more understanding the function of the switch circuit adopted in the present invention, a transmitting process of a voltage power of +5V outputted from a power supply to the motherboard via the switch circuit is took as an example. Please refer to
As described above, the two detect terminals (D1, D2) are connected to the input terminal (Si) and the output terminal (So) of the switch 200, respectively. When the voltage at the detect terminal (D1) is greater than the voltage at the detect terminal (D2), the control signal at a high level (+24VSB) for the connection of the switch 200 is outputted from the detect circuit 210. Accordingly, the voltage power of +5V originally outputted from the power supply side can be transmitted to the 24-pin jack 82 (
To sum up, the Power-Switch-On Signal (PSON), for activating the power supplies A and B, is firstly outputted from the motherboard after user pushing the power button of the computer. Then, all the specific voltages (+3V, +5V, and +12V) are started to build by the power supply A and B, and then outputted to the pin sets of the power supply A and B. Because the increasing of the specific voltages (+3V, +5V, and +12V), the voltage at the detect terminal (D1) must be greater than the voltage at the detect terminal (D2), so as the control signal at a high level for the connected of the switch circuit is outputted from the detect circuit 210, accordingly all the switch circuits in the power translating board are connected. Then, all the specific voltages (+3V, +5V, and +12V), from both the power supplies A and B, are transmitted to the motherboard. Moreover, after all the specific voltages (+3V, +5V, and +12V) are completely built and the power supplies A and B are at the stable state, the Power Good Signal (PG-A) of the power supply A (or, the Power Good Signal (PG-B) of the power supply B) is outputted to the motherboard, then the motherboard is aware of the power supply system is at a stable state.
Moreover, if one of the power supply (e.g., power supply A) in the power supply system of the present invention is damaged and cannot normally output the voltage power of +5V (e.g., can only output +1.5V), the switch circuit SW-A1 accordingly is disconnected due to the voltage at the power supply A side (+1.5V) is less than the voltage (+5V) at the 24-pin plug 82 side (
Referring to
After the Power-Switch-On Signal (PSON) is outputted from the motherboard to the power supply, the power supply is active and then the power supply starts to build the specific voltages (+3V, +5V, +12V) (step 658). In the processes of building the specific voltages (+3V, +5V, +12V), the voltage at the input terminal (Si) is greater than the voltage at the output terminal (So) in all switches, so as the switches in the power translating board are controlled to be connected (step 660). Afterwards, all the specific voltages (+3V, +5V, +12V) are further transmitted to the motherboard via the connected switches (step 662). The above-mentioned steps 658, 660, and 662 can be regarded as happening simultaneously.
Afterwards, the Power Good Signal (PG-A) is outputted to the motherboard after the specific voltages (+3V, +5V, +12V) are completely built and the power supply A is at the stable state.
To sum up, via the power translating board in the power supply system of the present invention, the motherboard always can get all the necessary specific voltages even one of the two power supplies is damaged. Moreover, based on the two MOSFETs (PQ1, PQ2) structured in back-to-back, all the currents are guaranteed to flow from the power supplies to the motherboard and no leakage currents can flow between the power supply and the motherboard.
While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.
Number | Date | Country | Kind |
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097124590 | Jun 2008 | TW | national |