Inventor · disambiguated record
Kwan-Jen Chu
Also filed as: CHU KWAN-JEN
53 granted patents·3 pending applications·327 citations·filing 1999–2024
98Inventor score
Top patents by PatentIndex Score
56 records- 0195US10079549B1Synchronous rectification controller with pull-up and pull-down circuit and power conversion apparatus having the samePOWER FOREST TECH CORPORATION·Filed 2017·Granted Sep 18, 2018·14 cites·11 claims
- 0292US7652945B2Adaptive zero current sense apparatus and method for a switching regulatorRICHTEK TECHNOLOGY CORP·Filed 2008·Granted Jan 26, 2010·31 cites·5 claims
- 0391US7906939B2Soft-stop circuit and method for a voltage regulatorRICHTEK TECHNOLOGY CORP·Filed 2008·Granted Mar 15, 2011·33 cites·8 claims
- 0488US8283974B2Fast start-up low-voltage bandgap reference voltage generatorCHU KWAN-JEN·Filed 2011·Granted Oct 9, 2012·13 cites·16 claims
- 0587US10056845B1Power conversion apparatus and synchronous rectification controller thereofPOWER FOREST TECH CORPORATION·Filed 2017·Granted Aug 21, 2018·5 cites·9 claims
- 0686US7714556B2Quick response switching regulator and control method thereofRICHTEK TECHNOLOGY CORP·Filed 2007·Granted May 11, 2010·23 cites·13 claims
- 0786US7411379B2Apparatus and method for over-voltage and over-current protection for a step-up current-mode converterRICHTEK TECHNOLOGY CORP·Filed 2005·Granted Aug 12, 2008·24 cites·11 claims
- 0884US8203234B2Power safety systemLEE LI-WEI·Filed 2010·Granted Jun 19, 2012·12 cites·10 claims
- 0983US8169159B2Boost converter LED driver and controller thereofLU CHIEN-PING·Filed 2008·Granted May 1, 2012·10 cites·2 claims
- 1082US9343976B2Power supply apparatus with discharge circuitPOWER FOREST TECHNOLOGY CORP·Filed 2014·Granted May 17, 2016·6 cites·11 claims
- 1179US9059635B2Power converter control circuitPOWER FOREST TECHNOLOGY·Filed 2013·Granted Jun 16, 2015·5 cites·12 claims
- 1276US7940596B2Adaptive zero current sense apparatus and method for a switching regulatorRICHTEK TECHNOLOGY CORP·Filed 2009·Granted May 10, 2011·10 cites·5 claims
- 1375US8198830B2Perceptually linear LED brightness controlLIN SHUI-MU·Filed 2009·Granted Jun 12, 2012·5 cites·29 claims
- 1474US8525484B2Charger and portable device having the sameLEE LI-WEI·Filed 2012·Granted Sep 3, 2013·4 cites·7 claims
- 1573US7746926B2Pulse width modulation regulator system with automatically switching pulse skipping modeRICHTEK TECHNOLOGY CORP·Filed 2005·Granted Jun 29, 2010·10 cites·4 claims
- 1673US7667530B2Charge pump down circuit and method for the sameRICHTEK TECHNOLOGY CORP·Filed 2008·Granted Feb 23, 2010·10 cites·9 claims
- 1768US7696806B2Level shift circuit and method for the sameRICHTEK TECHNOLOGY CORP·Filed 2008·Granted Apr 13, 2010·5 cites·10 claims
- 1867US8742689B2Light emitting diode driving apparatusCHU KWAN-JEN·Filed 2011·Granted Jun 3, 2014·2 cites·8 claims
- 1967US8648573B2Charger and portable device having the sameLEE LI-WEI·Filed 2012·Granted Feb 11, 2014·2 cites·7 claims
- 2067US8049462B2Universal serial bus charger circuit and charging methodRICHTEK TECHNOLOGY CORP ROC·Filed 2008·Granted Nov 1, 2011·7 cites·12 claims
- 2167US7148666B1Direct current voltage boosting/bucking deviceRICHTEK TECHNOLOGY CORP·Filed 2005·Granted Dec 12, 2006·9 cites·8 claims
- 2266US8294439B2Buck-boost switching regulator and control circuit and method thereforLU CHIEN-PING·Filed 2010·Granted Oct 23, 2012·3 cites·16 claims
- 2366US8140726B2Single wire transmission interface and method for the sameKUNG NIEN-HUI·Filed 2009·Granted Mar 20, 2012·3 cites·14 claims
- 2465US8698449B2Charger with detection of power input typeLEE LI-WEI·Filed 2010·Granted Apr 15, 2014·2 cites·8 claims
- 2565US7847516B2Circuit and method for detecting absent battery condition in a linear chargerRICHTEK TECHNOLOGY CORP·Filed 2008·Granted Dec 7, 2010·6 cites·7 claims
- 2665US7170763B2Apparatus and method for constant delta current control in a capacitor chargerRICHTEK TECHNOLOGY CORP·Filed 2004·Granted Jan 30, 2007·10 cites·20 claims
- 2764US7898227B2Non-synchronous boost converter including low-voltage device for load disconnectionRICHTEK TECHNOLOGY CORP·Filed 2009·Granted Mar 1, 2011·6 cites·12 claims
- 2863US8169198B2Anti-ring asynchronous boost converter and anti-ring method for an asynchronous boost converterLIN SHUI-MU·Filed 2008·Granted May 1, 2012·6 cites·30 claims
- 2962US8547078B2Methods for light load efficiency improvement of a buck boost voltage regulatorCHIU TZU-HUAN·Filed 2010·Granted Oct 1, 2013·2 cites·3 claims
- 3061US7605571B2Switching regulator with lower transistor capable of two states of ON or low currentRICHTEK TECHNOLOGY CORP·Filed 2007·Granted Oct 20, 2009·5 cites·20 claims
- 3160US8762763B2Single-wire transmission interface and method of transmission through single-wireCHU KWAN-JEN·Filed 2009·Granted Jun 24, 2014·2 cites·23 claims
- 3260US8400133B2Output current detection of a voltage regulatorKUNG NIEN-HUI·Filed 2011·Granted Mar 19, 2013·1 cites·22 claims
- 3360US8085014B2Dual power switch with activation control and voltage regulator using sameKUNG NIEN-HUI·Filed 2009·Granted Dec 27, 2011·3 cites·26 claims
- 3458US7876000B2Power path control circuitRICHTEK TECHNOLOGY CORP·Filed 2009·Granted Jan 25, 2011·3 cites·5 claims
- 3558US7751471B2Pulse width modulation regulator system with automatically switching pulse skipping modeRICHTEK TECHNOLOGY CORP·Filed 2009·Granted Jul 6, 2010·4 cites·16 claims
- 3657US7656133B2Capacitor charger with a modulated current varying with an input voltage and method thereofRICHTEK TECHNOLOGY CORP·Filed 2009·Granted Feb 2, 2010·3 cites·1 claims
- 3757US7518888B2Control circuit and method for a fly-back voltage converterRICHTEK TECHNOLOGY CORP·Filed 2006·Granted Apr 14, 2009·5 cites·8 claims
- 3854US2025392218A1Multi-level boost power converter circuit with low power lossRICHTEK TECHNOLOGY CORP·Filed 2024·Application pending·0 cites
- 3953US7994728B2Boost driver circuit with fast discharging functionRICHTEK TECHNOLOGY CORP·Filed 2009·Granted Aug 9, 2011·0 cites·9 claims
- 4052US8248049B2NMOSFET-base linear chargerKUNG NIEN-HUI·Filed 2008·Granted Aug 21, 2012·1 cites·8 claims
- 4152US8169208B2Output current detection of a voltage regulatorKUNG NIEN-HUI·Filed 2009·Granted May 1, 2012·2 cites·22 claims
- 4252US7714645B2Offset cancellation of a single-ended operational amplifierRICHTEK TECHNOLOGY CORP·Filed 2008·Granted May 11, 2010·2 cites·12 claims
- 4349US8890485B2Charger circuitKUNG NIEN-HUI·Filed 2009·Granted Nov 18, 2014·0 cites·3 claims
- 4449US7619394B2Capacitor charger with a modulated current varying with an input voltage and method thereofRICHTEK TECHNOLOGY CORP·Filed 2004·Granted Nov 17, 2009·6 cites·17 claims
- 4549US7580271B2Apparatus and method for suppressing the input current inrush for a voltage converter in a pre-charge stageRICHTEK TECHNOLOGY CORP·Filed 2007·Granted Aug 25, 2009·2 cites·16 claims
- 4647US9350251B2Power conversion apparatus and over power protection method thereofPOWER FOREST TECHNOLOGY CORP·Filed 2014·Granted May 24, 2016·0 cites·9 claims
- 4747US8378640B2Charging circuit with application system thereofRICHTEK TECHNOLOGY CORP·Filed 2009·Granted Feb 19, 2013·0 cites·8 claims
- 4846US8159195B2Overvoltage protection circuit for use in charger circuit system and charge circuit with overvoltage protection functionLU CHIEN-PING·Filed 2009·Granted Apr 17, 2012·0 cites·10 claims
- 4946US6639847B1Elimination of address-sensitivity by synchronous reference for sense amplifierTAIWAN SEMICONDUCTOR MFG·Filed 2002·Granted Oct 28, 2003·4 cites·20 claims
- 5045US9343977B2Power conversion apparatus and over power protection method thereofPOWER FOREST TECHNOLOGY CORP·Filed 2014·Granted May 17, 2016·0 cites·10 claims
Showing the top 50 of 56 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →