Inventor
ZHANG ALPHA J
TW20 patents
Patents
20 patentsUS6344979B1Feb 5, 2002
LLC series resonant DC-to-DC converter
DELTA ELECTRONICS INC213 citations98
US6538906B1Mar 25, 2003
Energy storage circuit for DC-DC converter
DELTA ELECTRONICS INC87 citations97
US6771521B1Aug 3, 2004
Active snubber for synchronous rectifier
DELTA ELECTRONICS INC61 citations96
US6714428B2Mar 30, 2004
Combined transformer-inductor device for application to DC-to-DC converter with synchronous rectifier
DELTA ELECTRONICS INC58 citations94
US7106130B2Sep 12, 2006
Variable frequency PWM controller circuit
DELTA ELECTRONICS INC40 citations92
US7006364B2Feb 28, 2006
Driving circuit for DC/DC converter
DELTA ELECTRONICS INC27 citations92
US6947297B2Sep 20, 2005
Active resonant snubber for DC-DC converter
DELTA ELECTRONICS INC23 citations92
US6853568B2Feb 8, 2005
Isolated voltage regulator with one core structure
DELTA ELECTRONICS INC49 citations92
US6807071B1Oct 19, 2004
Transformer isolated driver
DELTA ELECTRONICS INC37 citations92
US6724631B2Apr 20, 2004
Power converter package with enhanced thermal management
DELTA ELECTRONICS INC37 citations92
US6639814B2Oct 28, 2003
Constant voltage reset circuit for forward converter
DELTA ELECTRONICS INC22 citations92
US6466458B2Oct 15, 2002
Asymmetrical full bridge DC-to-DC converter
DELTA ELECTRONICS INC51 citations92
US6370044B1Apr 9, 2002
Synchronous rectifier circuit
DELTA ELECTRONICS INC26 citations92
US7518263B2Apr 14, 2009
Time delay control scheme for a power supply with multiple outputs
DELTA ELECTRONICS INC43 citations91
US6987679B2Jan 17, 2006
Multiple output converter with improved cross regulation
DELTA ELECTRONICS INC44 citations89
US7034513B2Apr 25, 2006
Power supply having efficient low power standby mode
DELTA ELECTRONICS INC28 citations88
US6469915B2Oct 22, 2002
Resonant reset dual switch forward DC-to-DC converter
DELTA ELECTRONICS INC17 citations84
US6396715B1May 28, 2002
DC to DC converter for operating in selectable voltage modes
DELTA ELECTRONICS INC18 citations84
US6912143B2Jun 28, 2005
Synchronous rectifier with burst mode control
DELTA ELECTRONICS INC15 citations80
US6424543B1Jul 23, 2002
Integral DC to DC converter
DELTA ELECTRONICS INC8 citations73