Inventor · disambiguated record
Nai-Chi Lee
Also filed as: LEE NAI C · LEE NAI-CHI
28 granted patents·1 pending application·1,021 citations·filing 1991–2020
97Inventor score
Files withALLEGRO MICROSYSTEMS LLC7KONINKL PHILIPS ELECTRONICS NV6PHILIPS ELECTRONICS NA6PHILIPS CORP4ALLEGRO MICROSYSTEMS INC1
Top patents by PatentIndex Score
29 records- 0198US6844702B2System, method and apparatus for contact-less battery charging with dynamic controlKONINKL PHILIPS ELECTRONICS NV·Filed 2002·Granted Jan 18, 2005·463 cites·19 claims
- 0297US11272591B1Constant power light emitting diode (LED) driverALLEGRO MICROSYSTEMS LLC·Filed 2020·Granted Mar 8, 2022·5 cites·28 claims
- 0395US9538601B1Method and apparatus for driving loads using a DC-DC converterALLEGRO MICROSYSTEMS LLC·Filed 2015·Granted Jan 3, 2017·27 cites·14 claims
- 0494US7449867B2Multi-phase buck converter with a plurality of coupled inductorsINT RECTIFIER CORP·Filed 2006·Granted Nov 11, 2008·45 cites·20 claims
- 0592US9781789B1Apparatus and methods for LED controlALLEGRO MICROSYSTEMS LLC·Filed 2016·Granted Oct 3, 2017·12 cites·21 claims
- 0692US6563718B1Capacitively coupled power converterKONINKL PHILIPS ELECTRONICS NV·Filed 2001·Granted May 13, 2003·73 cites·26 claims
- 0791US5107208ASystem for partitioning and testing submodule circuits of an integrated circuitPHILIPS CORP·Filed 1991·Granted Apr 21, 1992·75 cites·18 claims
- 0889US6341073B1Multiple valley controller for switching circuitPHILIPS ELECTRONICS NA·Filed 2000·Granted Jan 22, 2002·61 cites·18 claims
- 0988US8994279B2Method and apparatus to control a DC-DC converterRAVAL PRANAV·Filed 2013·Granted Mar 31, 2015·14 cites·41 claims
- 1086US10412797B2Apparatus and methods for converter mode and load configuration controlALLEGRO MICROSYSTEMS LLC·Filed 2017·Granted Sep 10, 2019·5 cites·22 claims
- 1183US9615413B2Driver circuit using dynamic regulation and related techniquesALLEGRO MICROSYSTEMS LLC·Filed 2013·Granted Apr 4, 2017·6 cites·27 claims
- 1283US8610371B2Circuitry to drive parallel loads sequentiallyLEE NAI-CHI·Filed 2011·Granted Dec 17, 2013·9 cites·10 claims
- 1382US6549432B1Single-winding, multiple-output, bi-directional flyback converterKONINKL PHILIPS ELECTRONICS NV·Filed 2002·Granted Apr 15, 2003·45 cites·24 claims
- 1479US9642203B2Controlling dimming ratio and output ripple voltageALLEGRO MICROSYSTEMS LLC·Filed 2016·Granted May 2, 2017·3 cites·20 claims
- 1578US9825528B2Compensating for voltage changes in driver circuitsALLEGRO MICROSYSTEMS LLC·Filed 2015·Granted Nov 21, 2017·3 cites·14 claims
- 1677US6788555B2Regulation of bi-directional flyback converterKONINKL PHILIPS ELECTRONICS NV·Filed 2002·Granted Sep 7, 2004·32 cites·17 claims
- 1774US7787262B2Capacitor charging methods and apparatusALLEGRO MICROSYSTEMS INC·Filed 2006·Granted Aug 31, 2010·13 cites·11 claims
- 1871US5581176AAnalog autonomous test bus framework for testing integrated circuits on a printed circuit boardPHILIPS CORP·Filed 1993·Granted Dec 3, 1996·22 cites·7 claims
- 1966US5936446APWM variable voltage load driver with peak voltage limitationPHILIPS ELECTRONICS NA·Filed 1996·Granted Aug 10, 1999·22 cites·4 claims
- 2064US6400581B1Method for adaptive control of switching losses in a drive circuit for active elementsKONINKL PHILIPS ELECTRONICS NV·Filed 2001·Granted Jun 4, 2002·17 cites·19 claims
- 2157USRE37500ESystem for partitioning and testing submodule circuits of an integrated circuitPHILIPS CORP·Filed 1996·Granted Jan 8, 2002·17 cites·34 claims
- 2252US6510066B2Switch mode power supply and method for transferring data across a power transformerFiled 2001·Granted Jan 21, 2003·9 cites·11 claims
- 2350US6674655B2Control method and apparatus for a flyback converterKONINKL PHILIPS ELECTRONICS NV·Filed 2000·Granted Jan 6, 2004·8 cites·20 claims
- 2450US5721511APWM variable voltage load driverPHILIPS ELECTRONICS NA·Filed 1996·Granted Feb 24, 1998·11 cites·5 claims
- 2541US5731701AAnalog autonomous test bus framework for testing integrated circuits on a printed circuit boardPHILIPS ELECTRONICS NA·Filed 1996·Granted Mar 24, 1998·6 cites·7 claims
- 2641US5705925AAnalog autonomous test bus framework for testing integrated circuits on a printed circuit boardPHILIPS CORP·Filed 1995·Granted Jan 6, 1998·6 cites·6 claims
- 2739US5717329AAnalog autonomous test bus framework for testing integrated circuits on a printed circuit boardPHILIPS ELECTRONICS NA·Filed 1995·Granted Feb 10, 1998·5 cites·6 claims
- 2838US6011387AAnalog autonomous test bus framework for testing integrated circuits on a printed circuit boardPHILIPS ELECTRONICS NA·Filed 1997·Granted Jan 4, 2000·7 cites·9 claims
- 2936US2008084717A1Multi-phase buck converter with a plurality of coupled inductorsWU WENKAI·Filed 2006·Application pending·0 cites
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