Inventor
QIAN JINRONG
US32 patents
⚠️ This page may combine multiple inventors who share the name “QIAN JINRONG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KONINKL PHILIPS ELECTRONICS NV
9 patentsUS6512352B2Jan 28, 2003
Active clamp step-down converter with power switch voltage clamping function
KONINKL PHILIPS ELECTRONICS NV112 citations98
US6473318B1Oct 29, 2002
Leakage energy recovering system and method for flyback converter
KONINKL PHILIPS ELECTRONICS NV86 citations97
US6486642B1Nov 26, 2002
Tapped-inductor step-down converter and method for clamping the tapped-inductor step-down converter
KONINKL PHILIPS ELECTRONICS NV52 citations96
US6507174B1Jan 14, 2003
Voltage regulator with clamping circuit
KONINKL PHILIPS ELECTRONICS NV44 citations92
US6630797B2Oct 7, 2003
High efficiency driver apparatus for driving a cold cathode fluorescent lamp
KONINKL PHILIPS ELECTRONICS NV31 citations91
US6519164B1Feb 11, 2003
Single power stage AC/DC forward converter with power switch voltage clamping function
KONINKL PHILIPS ELECTRONICS NV26 citations91
US6487094B1Nov 26, 2002
High efficiency DC-DC power converter
KONINKL PHILIPS ELECTRONICS NV22 citations91
US6477064B1Nov 5, 2002
High efficiency DC-DC power converter with turn-off snubber
KONINKL PHILIPS ELECTRONICS NV23 citations91
US6417629B1Jul 9, 2002
Push-pull based voltage-clamping electronic ballast
KONINKL PHILIPS ELECTRONICS NV7 citations72
TEXAS INSTRUMENTS INC
8 patentsUS8049465B2Nov 1, 2011
Systems, methods and circuits for determining micro-short
TEXAS INSTRUMENTS INC32 citations88
US7808244B2Oct 5, 2010
System and method for determining state of charge of a battery utilizing initial voltage and current measurement and a previous estimate of battery resistance
TEXAS INSTRUMENTS INC24 citations88
US9430008B2Aug 30, 2016
Apparatus and method for optimizing use of NVDC chargers
TEXAS INSTRUMENTS INC7 citations83
US7856328B2Dec 21, 2010
Systems, methods and circuits for determining potential battery failure based on a rate of change of internal impedance
TEXAS INSTRUMENTS INC17 citations79
US7443140B2Oct 28, 2008
Method and apparatus for operating a battery to avoid damage and maximize use of battery capacity by terminating battery discharge
TEXAS INSTRUMENTS INC13 citations79
US9356460B2May 31, 2016
Method and apparatus of fast battery charging with universal high power input source
TEXAS INSTRUMENTS INC7 citations76
US9735600B2Aug 15, 2017
Method for limiting battery discharging current in battery charger and discharger circuit
TEXAS INSTRUMENTS INC3 citations71
US11641126B2May 2, 2023
Battery charger system having a charge pump power stage
TEXAS INSTRUMENTS INC0 citations44
PHILIPS ELECTRONICS NA
6 patentsUS6314002B1Nov 6, 2001
Voltage clamping system and method for a DC/DC power converter
PHILIPS ELECTRONICS NA82 citations96
US5623187AApr 22, 1997
Controller for a gas discharge lamp with variable inverter frequency and with lamp power and bus voltage control
PHILIPS ELECTRONICS NA118 citations93
US6184630B1Feb 6, 2001
Electronic lamp ballast with voltage source power feedback to AC-side
PHILIPS ELECTRONICS NA35 citations92
US6107753AAug 22, 2000
Radio frequency electronic ballast with integrated power factor correction stage
PHILIPS ELECTRONICS NA19 citations92
US6051936AApr 18, 2000
Electronic lamp ballast with power feedback through line inductor
PHILIPS ELECTRONICS NA34 citations92
US6323606B1Nov 27, 2001
Monitor deflection circuit
PHILIPS ELECTRONICS NA3 citations63