Weng; Da Feng

Patent Applications and Registrations

Patent applications and USPTO patent grants for Weng; Da Feng.The latest application filed is for "high accuracy pulse duty-cycle calculation implementation for power converter's pwm control apparatus".

Company Profile

0.19.17

Weng; Da Feng - Sunnyvale CA
Weng; Da Feng - US
Weng; Da Feng - Cupertino CA
Weng; Da Feng - Winchester MA
Weng; Da Feng - Yorktown Heights NY

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
High accuracy pulse duty-cycle calculation implementation for power converter's PWM control apparatus App 20150042294 - Wei; Qi Cui ; et al.	2015-02-12
Constant switching frequency discontinuous current mode average output current control scheme App 20150016157 - Wei; Qi Cui ; et al.	2015-01-15
LED dimming control scheme Grant 8,829,802 - Wei , et al. September 9, 2	2014-09-09
Switching adapter control method for adaptive mobile power systems Grant 8,629,670 - Weng , et al. January 14, 2	2014-01-14
High accuracy inductor peak current control scheme for switching power supply Grant 8,558,528 - Weng October 15, 2	2013-10-15
Power-supply controller Grant 8,350,551 - Weng , et al. January 8, 2	2013-01-08
LED dimming control scheme App 20120306401 - Wei; Qi Cui ; et al.	2012-12-06
High accuracy inductor peak current control scheme for switching power supply App 20120181999 - Weng; Da Feng	2012-07-19
Switching adapter control method for adaptive mobile power systems App 20110298437 - Weng; Da Feng ; et al.	2011-12-08
Isolated current regulated DC-DC converter App 20110176336 - Weng; Da Feng ; et al.	2011-07-21
Power-supply Controller App 20100264895 - Weng; Da Feng ; et al.	2010-10-21
Step up and down switching power converter's output current detect and control scheme App 20100231184 - Wei; Qi Cui ; et al.	2010-09-16
Constant-on-time Power-supply Controller And Related System And Method App 20090102447 - Weng; Da Feng ; et al.	2009-04-23
Constant-on-time power-supply controller and related system and method Grant 7,439,721 - Weng , et al. October 21, 2	2008-10-21
Passive switching capacitor network auxiliary voltage source for off-line IC chip and additional circuits App 20080013236 - Weng; Da Feng	2008-01-17
Quasi average current mode control scheme for switching power converter Grant 7,250,744 - Weng July 31, 2	2007-07-31
Constant-on-time power-supply controller and related system and method App 20060284609 - Weng; Da Feng ; et al.	2006-12-21
Switching capacitor network auxiliary voltage source for off-line IC chip App 20050259453 - Weng, Da Feng	2005-11-24
Quasi average current mode control scheme for switching power converter App 20050237041 - Weng, Da Feng	2005-10-27
Quasi active power factor correction circuit for switching power supply Grant 6,909,622 - Weng June 21, 2	2005-06-21
Quasi active power factor correction circuit for switching power supply App 20040085788 - Weng, Da Feng	2004-05-06
Method and apparatus for controlling the operation of a lamp Grant 6,518,712 - Weng February 11, 2	2003-02-11
Apparatus and method for detecting a short circuit in a lighting system Grant 6,496,012 - Weng , et al. December 17, 2	2002-12-17
Leakage energy recovering system and method for flyback converter Grant 6,473,318 - Qian , et al. October 29, 2	2002-10-29
Ballast for discharge lamp App 20020047609 - Weng, Da Feng	2002-04-25
Voltage clamping system and method for a DC/DC power converter Grant 6,314,002 - Qian , et al. November 6, 2	2001-11-06
Resonant-boost-input three-phase power factor corrector with a low current stress on switches Grant 6,239,995 - Weng , et al. May 29, 2	2001-05-29
Power factor correction circuit for a power supply Grant 5,986,901 - Weng November 16, 1	1999-11-16

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