Assignee
IWATT INC
US·56 granted patents·6 pending applications·2,275 citations·filing 2000–2013
Top patents by PatentIndex Score
62 records- 0199US7161816B2System and method for input current shaping in a power converterIWATT INC·Filed 2005·Granted Jan 9, 2007·145 cites·28 claims
- 0299US6944034B1System and method for input current shaping in a power converterIWATT INC·Filed 2003·Granted Sep 13, 2005·330 cites·27 claims
- 0398US8018743B2Adaptive control for transition between multiple modulation modes in a switching power converterIWATT INC·Filed 2009·Granted Sep 13, 2011·71 cites·13 claims
- 0497US7505287B1On-time control for constant current mode in a flyback power supplyIWATT INC·Filed 2006·Granted Mar 17, 2009·83 cites·21 claims
- 0597US6894911B2Method of driving a power converter by using a power pulse and a sense pulseIWATT INC·Filed 2002·Granted May 17, 2005·262 cites·2 claims
- 0697US6385059B1Transformer-coupled switching power converter having primary feedback controlIWATT INC·Filed 2000·Granted May 7, 2002·176 cites·13 claims
- 0796US6972969B1System and method for controlling current limit with primary side sensingIWATT INC·Filed 2004·Granted Dec 6, 2005·122 cites·14 claims
- 0896US6956750B1Power converter controller having event generator for detection of events and generation of digital errorIWATT INC·Filed 2003·Granted Oct 18, 2005·156 cites·32 claims
- 0995US7928670B2LED driver with multiple feedback loopsIWATT INC·Filed 2008·Granted Apr 19, 2011·55 cites·21 claims
- 1095US6900995B2PWM power converter controlled by transistion detection of a comparator error signalIWATT INC·Filed 2002·Granted May 31, 2005·94 cites·17 claims
- 1195US6882552B2Power converter driven by power pulse and sense pulseIWATT INC·Filed 2002·Granted Apr 19, 2005·138 cites·7 claims
- 1293US8049481B2Adaptive multi-mode digital control improving light-load efficiency in switching power convertersIWATT INC·Filed 2009·Granted Nov 1, 2011·29 cites·20 claims
- 1393US7936132B2LED lampIWATT INC·Filed 2008·Granted May 3, 2011·46 cites·11 claims
- 1493US7558093B1Power converter with emulated peak current mode controlIWATT INC·Filed 2006·Granted Jul 7, 2009·35 cites·22 claims
- 1592US7443700B2On-time control for constant current mode in a flyback power supplyIWATT INC·Filed 2007·Granted Oct 28, 2008·39 cites·9 claims
- 1692US7336058B1Multistage low dropout voltage regulationIWATT INC·Filed 2007·Granted Feb 26, 2008·30 cites·15 claims
- 1792US6862198B2PWM power converter with digital sampling control circuitryIWATT INC·Filed 2002·Granted Mar 1, 2005·62 cites·10 claims
- 1891US7876582B2Compensating on-time delay of switching transistor in switching power convertersIWATT INC·Filed 2010·Granted Jan 25, 2011·10 cites·14 claims
- 1988US8964421B2Powering a synchronous rectifier controllerIWATT INC·Filed 2013·Granted Feb 24, 2015·9 cites·18 claims
- 2088US8854842B2Digital communication link between secondary side and primary side of switching power converterIWATT INC·Filed 2012·Granted Oct 7, 2014·9 cites·22 claims
- 2188US7589983B1Power converter controller controlled by variable reference voltage generated by dual output digital to analog converterIWATT INC·Filed 2006·Granted Sep 15, 2009·21 cites·20 claims
- 2288US7474130B1Compensation of voltage-to-current converterIWATT INC·Filed 2007·Granted Jan 6, 2009·20 cites·13 claims
- 2387US9326343B2Integrated LED dimmer controllerIWATT INC·Filed 2013·Granted Apr 26, 2016·10 cites·23 claims
- 2487US8823283B2Power dissipation monitor for current sink function of power switching transistorIWATT INC·Filed 2013·Granted Sep 2, 2014·10 cites·20 claims
- 2587US7433211B1System and method for input current shaping in a power converterIWATT INC·Filed 2004·Granted Oct 7, 2008·44 cites·16 claims
- 2685US7317625B2Parallel current mode control using a direct duty cycle algorithm with low computational requirements to perform power factor correctionIWATT INC·Filed 2004·Granted Jan 8, 2008·42 cites·9 claims
- 2784US8970115B2Delaying startup under fault conditionsIWATT INC·Filed 2013·Granted Mar 3, 2015·7 cites·21 claims
- 2883US6990000B1Reconstruction of the output voltage of an AC-DC power converterIWATT INC·Filed 2004·Granted Jan 24, 2006·44 cites·33 claims
- 2982US7514913B2Parallel current mode control using a direct duty cycle algorithm with low computational requirements to perform power factor correctionIWATT INC·Filed 2007·Granted Apr 7, 2009·16 cites·33 claims
- 3082US6621255B2Linear AC to DC regulator with synchronous rectificationIWATT INC·Filed 2002·Granted Sep 16, 2003·24 cites·8 claims
- 3180US9420645B2Constant current control buck converter without current senseIWATT INC·Filed 2013·Granted Aug 16, 2016·5 cites·17 claims
- 3280US9318963B2Switching power converter with secondary to primary messagingIWATT INC·Filed 2013·Granted Apr 19, 2016·5 cites·20 claims
- 3380US7880447B1Power converter controller IC having input voltage pin with multiple functionsIWATT INC·Filed 2006·Granted Feb 1, 2011·13 cites·26 claims
- 3479US7724547B1Compensating on-time delay of switching transistor in switching power convertersIWATT INC·Filed 2007·Granted May 25, 2010·12 cites·14 claims
- 3578US9154039B2Switching power converter with secondary-side dynamic load detection and primary-side feedback and controlIWATT INC·Filed 2013·Granted Oct 6, 2015·5 cites·18 claims
- 3678US8723437B1Filter bandwidth adjustment in a multi-loop dimmer control circuitIWATT INC·Filed 2012·Granted May 13, 2014·4 cites·19 claims
- 3778US7382308B1Reference buffer using current mirrors and source followers to generate reference voltagesIWATT INC·Filed 2007·Granted Jun 3, 2008·12 cites·17 claims
- 3876US9184667B2Switching power converter with primary-side dynamic load detection and primary-side feedback and controlIWATT INC·Filed 2013·Granted Nov 10, 2015·4 cites·16 claims
- 3976US7739626B2Method and apparatus for small die low power system-on-chip design with intelligent power supply chipIWATT INC·Filed 2007·Granted Jun 15, 2010·6 cites·7 claims
- 4075US8995150B2Primary side sense output current regulationIWATT INC·Filed 2012·Granted Mar 31, 2015·4 cites·14 claims
- 4175US7554821B1System and method for input current shaping in a power converterIWATT INC·Filed 2008·Granted Jun 30, 2009·9 cites·62 claims
- 4275US7548438B1System and method for input current shaping in a power converterIWATT INC·Filed 2008·Granted Jun 16, 2009·9 cites·31 claims
- 4375US7511973B2Constant current mode ripple attenuation method in flyback power supplyIWATT INC·Filed 2007·Granted Mar 31, 2009·12 cites·9 claims
- 4474US8933675B2Two-inductor based AC-DC offline power converter with high efficiencyIWATT INC·Filed 2013·Granted Jan 13, 2015·4 cites·15 claims
- 4573US9071147B2Average input current estimation based on primary side current senseIWATT INC·Filed 2013·Granted Jun 30, 2015·3 cites·13 claims
- 4671US8964422B2EMI frequency spreading method for switching power converterIWATT INC·Filed 2012·Granted Feb 24, 2015·3 cites·26 claims
- 4771US7974109B2Digital compensation for cable drop in a primary side control power supply controllerIWATT INC·Filed 2007·Granted Jul 5, 2011·10 cites·15 claims
- 4865US8982584B2Power supply regulation for ultra-low load and no-load operationIWATT INC·Filed 2012·Granted Mar 17, 2015·2 cites·36 claims
- 4964US9060408B2Thermal de-rating power supply for LED loadsIWATT INC·Filed 2013·Granted Jun 16, 2015·1 cites·21 claims
- 5060US7974107B2System and method for controlling a current limit with primary side sensing using a hybrid PWM and PFM controlIWATT INC·Filed 2008·Granted Jul 5, 2011·5 cites·12 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
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