Inventor
TSAO FENG CHENG
TW9 patents
Patents
9 patentsUS7362593B2Apr 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
US7061780B2Jun 13, 2006
Switching control circuit with variable switching frequency for primary-side-controlled power converters
SYSTEM GENERAL CORP137 citations96
US7426120B2Sep 16, 2008
Switching control circuit having a valley voltage detector to achieve soft switching for a resonant power converter
SYSTEM GENERAL CORP33 citations92
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
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