Inventor · disambiguated record
Fred Greenfeld
Also filed as: GREENFELD FRED · GREENFELD FRED F
12 granted patents·2 pending applications·416 citations·filing 2001–2012
93Inventor score
Top patents by PatentIndex Score
14 records- 0197US7944153B2Constant current light emitting diode (LED) driver circuit and methodINTERSIL INC·Filed 2007·Granted May 17, 2011·110 cites·27 claims
- 0295US8022634B2Method and system for dimming AC-powered light emitting diode (LED) lighting systems using conventional incandescent dimmersINTERSIL INC·Filed 2009·Granted Sep 20, 2011·54 cites·20 claims
- 0393US8344657B2LED driver with open loop dimming controlINTERSIL INC·Filed 2010·Granted Jan 1, 2013·38 cites·20 claims
- 0490US8339055B2Inrush current limiter for an LED driverZHAN XIAODONG·Filed 2010·Granted Dec 25, 2012·17 cites·21 claims
- 0590US7196503B2Current averaging circuit for a PWM power converterINTERSIL INC·Filed 2005·Granted Mar 27, 2007·37 cites·20 claims
- 0690US6819154B2Constant deadtime control in a feed forward enabled pulse width modulator controllerINTERSIL INC·Filed 2003·Granted Nov 16, 2004·42 cites·2 claims
- 0785US6538905B2DC-to-DC power converter including at least two cascaded power conversion stagesARTESYN TECHNOLOGIES INC·Filed 2001·Granted Mar 25, 2003·52 cites·53 claims
- 0884US7876067B2High frequency connector-less charging schemeINTERSIL INC·Filed 2007·Granted Jan 25, 2011·41 cites·16 claims
- 0983US8035996B1Asymmetric zero-voltage switching full-bridge power convertersINTERSIL INC·Filed 2009·Granted Oct 11, 2011·16 cites·22 claims
- 1079US8335091B2Asymmetric zero-voltage switching full-bridge power convertersGREENFELD FRED·Filed 2011·Granted Dec 18, 2012·6 cites·28 claims
- 1166US9263963B2Current-responsive active rectification for a power supply operable in a discontinuous modeIntersil Americas LLC·Filed 2012·Granted Feb 16, 2016·2 cites·22 claims
- 1258US8901832B2LED driver system with dimmer detectionQIU WEIHONG·Filed 2012·Granted Dec 2, 2014·1 cites·17 claims
- 1336US2011286245A1Dc/dc power converter having active self driving synchronous rectificationZHAN XIAODONG·Filed 2011·Application pending·0 cites
- 1433US2005036245A1Bridge power converter overload protectionINTERSIL INC·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →