Kwan-Jen Chu

Person

Hsin-chu, TW

People

Patents Grantslast 30 patents

Information Patent Grant
Synchronous rectification controller with pull-up and pull-down cir...
- Patent number 10,079,549
- Issue date Sep 18, 2018
- Power Forest Technology Corporation
- Kwan-Jen Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power conversion apparatus and synchronous rectification controller...
- Patent number 10,056,845
- Issue date Aug 21, 2018
- Power Forest Technology Corporation
- Kwan-Jen Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power conversion apparatus and over power protection method thereof
- Patent number 9,350,251
- Issue date May 24, 2016
- Power Forest Technology Corporation
- Kwan-Jen Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power conversion apparatus and over power protection method thereof
- Patent number 9,343,977
- Issue date May 17, 2016
- Power Forest Technology Corporation
- Kwan-Jen Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply apparatus with discharge circuit
- Patent number 9,343,976
- Issue date May 17, 2016
- Power Forest Technology Corporation
- Kwan-Jen Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power converter control circuit
- Patent number 9,059,635
- Issue date Jun 16, 2015
- Power Forest Technology
- Kwan-Jen Chu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Charger circuit
- Patent number 8,890,485
- Issue date Nov 18, 2014
- Richtek Technology Corporation, R.O.C.
- Nien-Hui Kung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Single-wire transmission interface and method of transmission throu...
- Patent number 8,762,763
- Issue date Jun 24, 2014
- Richtek Technology Corporation
- Kwan-Jen Chu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Light emitting diode driving apparatus
- Patent number 8,742,689
- Issue date Jun 3, 2014
- Power Forest Technology Corporation
- Kwan-Jen Chu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Charger with detection of power input type
- Patent number 8,698,449
- Issue date Apr 15, 2014
- Richtek Technology Corp.
- Li-Wei Lee
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charger and portable device having the same
- Patent number 8,648,573
- Issue date Feb 11, 2014
- Richtek Technology Corp.
- Li-Wei Lee
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Methods for light load efficiency improvement of a buck boost volta...
- Patent number 8,547,078
- Issue date Oct 1, 2013
- Richtek Technology Corp.
- Tzu-Huan Chiu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charger and portable device having the same
- Patent number 8,525,484
- Issue date Sep 3, 2013
- Richtek Technology Corp.
- Li-Wei Lee
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Output current detection of a voltage regulator
- Patent number 8,400,133
- Issue date Mar 19, 2013
- Richtek Technology Corp.
- Nien-Hui Kung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charging circuit with application system thereof
- Patent number 8,378,640
- Issue date Feb 19, 2013
- Richtek Technology Corp.
- Li-Wei Lee
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Buck-boost switching regulator and control circuit and method therefor
- Patent number 8,294,439
- Issue date Oct 23, 2012
- Richtek Technology Corporation
- Chien-Ping Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fast start-up low-voltage bandgap reference voltage generator
- Patent number 8,283,974
- Issue date Oct 9, 2012
- Richtek Technology Corp.
- Kwan-Jen Chu
- G05 - CONTROLLING REGULATING
Information Patent Grant
Hybrid battery charger and control circuit and method thereof
- Patent number 8,269,461
- Issue date Sep 18, 2012
- Richtek Technology Corp.
- Nien-Hui Kung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
NMOSFET-base linear charger
- Patent number 8,248,049
- Issue date Aug 21, 2012
- Richtek Technology Corp.
- Nien-Hui Kung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power safety system
- Patent number 8,203,234
- Issue date Jun 19, 2012
- Richtek Technology Corp.
- Li-Wei Lee
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Perceptually linear LED brightness control
- Patent number 8,198,830
- Issue date Jun 12, 2012
- Richtek Technology Corp.
- Shui-Mu Lin
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Boost converter LED driver and controller thereof
- Patent number 8,169,159
- Issue date May 1, 2012
- Richtek Technology Corp.
- Chien-Ping Lu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Anti-ring asynchronous boost converter and anti-ring method for an...
- Patent number 8,169,198
- Issue date May 1, 2012
- Richtek Technology Corp.
- Shui-Mu Lin
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Output current detection of a voltage regulator
- Patent number 8,169,208
- Issue date May 1, 2012
- Richtek Technology Corp.
- Nien-Hui Kung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Overvoltage protection circuit for use in charger circuit system an...
- Patent number 8,159,195
- Issue date Apr 17, 2012
- Richtek Technology Corporation
- Chien-Ping Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Single wire transmission interface and method for the same
- Patent number 8,140,726
- Issue date Mar 20, 2012
- Richtek Technology Corporation, R.O.C.
- Nien-Hui Kung
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Dual power switch with activation control and voltage regulator usi...
- Patent number 8,085,014
- Issue date Dec 27, 2011
- Richtek Technology Corporation
- Nien-Hui Kung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Universal serial bus charger circuit and charging method
- Patent number 8,049,462
- Issue date Nov 1, 2011
- Richtek Technology Corporation, R.O.C.
- Nien-Hui Kung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Boost driver circuit with fast discharging function
- Patent number 7,994,728
- Issue date Aug 9, 2011
- Richtek Technology Corporation
- Kwan-Jen Chu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Adaptive zero current sense apparatus and method for a switching re...
- Patent number 7,940,596
- Issue date May 10, 2011
- Richtek Technology Corp.
- Kwan-Jen Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
POWER CONVERSION APPARATUS AND OVER POWER PROTECTION METHOD THEREOF
- Publication number 20160099648
- Publication date Apr 7, 2016
- Power Forest Technology Corporation
- Kwan-Jen Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER CONVERSION APPARATUS AND OVER POWER PROTECTION METHOD THEREOF
- Publication number 20160043645
- Publication date Feb 11, 2016
- POWER FOREST TECHNOLOGY CORPORATION
- Kwan-Jen Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER SUPPLY APPARATUS
- Publication number 20150288286
- Publication date Oct 8, 2015
- POWER FOREST TECHNOLOGY CORPORATION
- Kwan-Jen Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER CONVERTER CONTROL CIRCUIT
- Publication number 20140145635
- Publication date May 29, 2014
- POWER FOREST TECHNOLOGY
- KWAN-JEN CHU
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CHARGER AND PORTABLE DEVICE HAVING THE SAME
- Publication number 20130002196
- Publication date Jan 3, 2013
- RICHTEK TECHNOLOGY CORP.
- LI-WEI LEE
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CHARGER AND PORTABLE DEVICE HAVING THE SAME
- Publication number 20130002195
- Publication date Jan 3, 2013
- RICHTEK TECHNOLOGY CORP.
- LI-WEI LEE
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
LIGHT EMITTING DIODE DRIVING APPARATUS
- Publication number 20120139443
- Publication date Jun 7, 2012
- POWER FOREST TECHNOLOGY CORPORATION
- Kwan-Jen Chu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
OUTPUT CURRENT DETECTION OF A VOLTAGE REGULATOR
- Publication number 20120038338
- Publication date Feb 16, 2012
- RICHTEK TECHNOLOGY CORP.
- NIEN-HUI KUNG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
FAST START-UP LOW-VOLTAGE BANDGAP REFERENCE VOLTAGE GENERATOR
- Publication number 20110169561
- Publication date Jul 14, 2011
- RICHTEK TECHNOLOGY CORP.
- KWAN-JEN CHU
- G05 - CONTROLLING REGULATING
Information Patent Application
Single Wire Transmission Interface And Method For the Same
- Publication number 20110095624
- Publication date Apr 28, 2011
- Richtek Technology Corporation, R.O.C.
- NIEN-HUI KUNG
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Charger Circuit
- Publication number 20110080142
- Publication date Apr 7, 2011
- Richtek Technology Corporation, R.O.C.
- Nien-Hui Kung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHODS FOR LIGHT LOAD EFFICIENCY IMPROVEMENT OF A BUCK BOOST VOLTA...
- Publication number 20110050192
- Publication date Mar 3, 2011
- RICHTEK TECHNOLOGY CORP.
- TZU-HUAN CHIU
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
CHARGER AND PORTABLE DEVICE HAVING THE SAME
- Publication number 20110043162
- Publication date Feb 24, 2011
- RICHTEK TECHNOLOGY CORP.
- LI-WEI LEE
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
CHARGING CIRCUIT WITH APPLICATION SYSTEM THEREOF
- Publication number 20110012565
- Publication date Jan 20, 2011
- Richteck Technology Corp.
- Li-Wei LEE
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
HYBRID BATTERY CHARGER AND CONTROL CIRCUIT AND METHOD THEREOF
- Publication number 20110006728
- Publication date Jan 13, 2011
- RICHTEK TECHNOLOGY CORP.
- NIEN-HUI KUNG
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Buck-boost switching regulator and control circuit and method therefor
- Publication number 20110001461
- Publication date Jan 6, 2011
- Richtek Technology Corporation, R.O.C.
- Chien-Ping LU
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER SAFETY SYSTEM
- Publication number 20100231047
- Publication date Sep 16, 2010
- RICHTEK TECHNOLOGY CORP.
- LI-WEI LEE
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Boost driver circuit with fast discharging function
- Publication number 20100072915
- Publication date Mar 25, 2010
- Richtek Technology Corporation
- Kwan-Jen Chu
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Overvoltage protection circuit for use in charger circuit system an...
- Publication number 20100066312
- Publication date Mar 18, 2010
- Richtek Technology Corporation
- Chien-Ping Lu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Adaptive zero current sense apparatus and method for a switching re...
- Publication number 20100052629
- Publication date Mar 4, 2010
- Kwan-Jen Chu
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Single-wire transmission interface and method of transmission throu...
- Publication number 20100054313
- Publication date Mar 4, 2010
- Richtek Technology Corporation
- Kwan-Jen Chu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Non-synchronous boost converter including low-voltage device for lo...
- Publication number 20100026257
- Publication date Feb 4, 2010
- Tsung-Wei Huang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
LED driver and controller thereof
- Publication number 20100019682
- Publication date Jan 28, 2010
- Chien-Ping Lu
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Output current detection of a voltage regulator
- Publication number 20090315527
- Publication date Dec 24, 2009
- Nien-Hui Kung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Power path control circuit
- Publication number 20090261654
- Publication date Oct 22, 2009
- Richtek Technology Corporation
- Tzu-Huan Chiu
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Circuit and method for detecting absent battery condition in a line...
- Publication number 20090237035
- Publication date Sep 24, 2009
- Nien-Hui Kung
- G01 - MEASURING TESTING
Information Patent Application
CHARGE PUMP DOWN CIRCUIT AND METHOD FOR THE SAME
- Publication number 20090219078
- Publication date Sep 3, 2009
- Richtek Technology Corporation
- Kwan-Jen Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
LEVEL SHIFT CIRCUIT AND METHOD FOR THE SAME
- Publication number 20090212841
- Publication date Aug 27, 2009
- Richtek Technology Corporation
- Kwan-Jen Chu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Capacitor charger with a modulated current varying with an input vo...
- Publication number 20090195221
- Publication date Aug 6, 2009
- Chung-Lung Pai
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Perceptually linear LED brightness control
- Publication number 20090195191
- Publication date Aug 6, 2009
- Shui-Mu Lin
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Kwan-Jen Chu

Person

Patents Grantslast 30 patents

Synchronous rectification controller with pull-up and pull-down cir...

Power conversion apparatus and synchronous rectification controller...

Power conversion apparatus and over power protection method thereof

Power conversion apparatus and over power protection method thereof

Power supply apparatus with discharge circuit

Power converter control circuit

Charger circuit

Single-wire transmission interface and method of transmission throu...

Light emitting diode driving apparatus

Charger with detection of power input type

Charger and portable device having the same

Methods for light load efficiency improvement of a buck boost volta...

Charger and portable device having the same

Output current detection of a voltage regulator

Charging circuit with application system thereof

Buck-boost switching regulator and control circuit and method therefor

Fast start-up low-voltage bandgap reference voltage generator

Hybrid battery charger and control circuit and method thereof

NMOSFET-base linear charger

Power safety system

Perceptually linear LED brightness control

Boost converter LED driver and controller thereof

Anti-ring asynchronous boost converter and anti-ring method for an...

Output current detection of a voltage regulator

Overvoltage protection circuit for use in charger circuit system an...

Single wire transmission interface and method for the same

Dual power switch with activation control and voltage regulator usi...

Universal serial bus charger circuit and charging method

Boost driver circuit with fast discharging function

Adaptive zero current sense apparatus and method for a switching re...

Patents Applicationslast 30 patents

POWER CONVERSION APPARATUS AND OVER POWER PROTECTION METHOD THEREOF

POWER CONVERSION APPARATUS AND OVER POWER PROTECTION METHOD THEREOF

POWER SUPPLY APPARATUS

POWER CONVERTER CONTROL CIRCUIT

CHARGER AND PORTABLE DEVICE HAVING THE SAME

CHARGER AND PORTABLE DEVICE HAVING THE SAME

LIGHT EMITTING DIODE DRIVING APPARATUS

OUTPUT CURRENT DETECTION OF A VOLTAGE REGULATOR

FAST START-UP LOW-VOLTAGE BANDGAP REFERENCE VOLTAGE GENERATOR

Single Wire Transmission Interface And Method For the Same

Charger Circuit

METHODS FOR LIGHT LOAD EFFICIENCY IMPROVEMENT OF A BUCK BOOST VOLTA...

CHARGER AND PORTABLE DEVICE HAVING THE SAME

CHARGING CIRCUIT WITH APPLICATION SYSTEM THEREOF

HYBRID BATTERY CHARGER AND CONTROL CIRCUIT AND METHOD THEREOF

Buck-boost switching regulator and control circuit and method therefor

POWER SAFETY SYSTEM

Boost driver circuit with fast discharging function

Overvoltage protection circuit for use in charger circuit system an...

Adaptive zero current sense apparatus and method for a switching re...

Single-wire transmission interface and method of transmission throu...

Non-synchronous boost converter including low-voltage device for lo...

LED driver and controller thereof

Output current detection of a voltage regulator

Power path control circuit

Circuit and method for detecting absent battery condition in a line...

CHARGE PUMP DOWN CIRCUIT AND METHOD FOR THE SAME

LEVEL SHIFT CIRCUIT AND METHOD FOR THE SAME

Capacitor charger with a modulated current varying with an input vo...

Perceptually linear LED brightness control