Inventor
LI CHUH-CHING
TW27 patents
⚠️ This page may combine multiple inventors who share the name “LI CHUH-CHING”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SYSTEM GENERAL CORP
15 patentsUS7362592B2Apr 22, 2008
Switching control circuit for primary-side controlled power converters
SYSTEM GENERAL CORP126 citations98
US7362593B2Apr 22, 2008
Switching control circuit having off-time modulation to improve efficiency of primary-side controlled power supply
SYSTEM GENERAL CORP138 citations98
US7352595B2Apr 1, 2008
Primary-side controlled switching regulator
SYSTEM GENERAL CORP81 citations97
US7965528B2Jun 21, 2011
Method and apparatus for measuring the switching current of power converter operated at continuous current mode
SYSTEM GENERAL CORP33 citations92
US7426120B2Sep 16, 2008
Switching control circuit having a valley voltage detector to achieve soft switching for a resonant power converter
SYSTEM GENERAL CORP33 citations92
US7671578B2Mar 2, 2010
Detection circuit for sensing the input voltage of transformer
SYSTEM GENERAL CORP12 citations84
US7663352B2Feb 16, 2010
Control circuit for measuring and regulating output current of CCM power converter
SYSTEM GENERAL CORP13 citations84
US7561447B2Jul 14, 2009
Primary-side controlled switching regulator
SYSTEM GENERAL CORP8 citations84
US7492613B2Feb 17, 2009
Control circuit of power converter having adaptive bias for detecting reflected voltage of transformer
SYSTEM GENERAL CORP13 citations84
US7405595B2Jul 29, 2008
High-side transistor driver having positive feedback for improving speed and power saving
SYSTEM GENERAL CORP10 citations84
US7466569B2Dec 16, 2008
Power converter having phase lock circuit for quasi-resonant soft switching
SYSTEM GENERAL CORP12 citations83
US7471121B2Dec 30, 2008
Transistor drive circuit of power converter operating in a wide voltage range
SYSTEM GENERAL CORP17 citations80
US7701734B2Apr 20, 2010
Detection circuit to detect input voltage of transformer and detecting method for the same
SYSTEM GENERAL CORP5 citations63
US7518416B2Apr 14, 2009
Method and apparatus for detecting switching current of magnetic device operated in continuous current mode
SYSTEM GENERAL CORP4 citations63
US9049764B2Jun 2, 2015
LED drive circuit with a programmable input for LED lighting
SYSTEM GENERAL CORP2 citations62
YANG TA-YUNG
6 patentsUS8094468B2Jan 10, 2012
Control circuit having off-time modulation to operate power converter at quasi-resonance and in continuous current mode
YANG TA-YUNG26 citations92
US8587964B2Nov 19, 2013
Control circuit with burst mode and extended valley switching for quasi-resonant power converter
YANG TA-YUNG14 citations83
US8432109B2Apr 30, 2013
Method and apparatus for a LED driver with high power factor
YANG TA-YUNG8 citations80
US8559196B2Oct 15, 2013
Output voltage control circuit of power converter for light-load power saving
YANG TA-YUNG3 citations63
US8742677B2Jun 3, 2014
LED drive circuit with a programmable input for LED lighting
YANG TA-YUNG3 citations62
US8854841B2Oct 7, 2014
High-speed reflected signal detection for primary-side controlled power converters
YANG TA-YUNG0 citations52
FAIRCHILD SEMICONDUCTOR
3 patentsUS10412796B2Sep 10, 2019
LED drive circuit with a programmable input for LED lighting
FAIRCHILD SEMICONDUCTOR2 citations73
US11026309B2Jun 1, 2021
LED drive circuit with a programmable input for LED lighting
FAIRCHILD SEMICONDUCTOR0 citations62
US10531528B2Jan 7, 2020
LED drive circuit with a programmable input for LED lighting
FAIRCHILD SEMICONDUCTOR0 citations52
RICHTEK TECHNOLOGY CORP
3 patentsUS11139742B2Oct 5, 2021
Switching controller circuit and method for controlling flyback power converter
RICHTEK TECHNOLOGY CORP2 citations71
US11139744B2Oct 5, 2021
Flyback power converter and secondary side controller circuit and control method thereof
RICHTEK TECHNOLOGY CORP1 citations61
US11018597B2May 25, 2021
Flyback power converter circuit and control circuit and control method thereof
RICHTEK TECHNOLOGY CORP0 citations51