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IWATT INC
US56 patents
Top patents by PatentIndex Score
US7161816B2Jan 9, 2007
System and method for input current shaping in a power converter
IWATT INC145 citations99
US6944034B1Sep 13, 2005
System and method for input current shaping in a power converter
IWATT INC330 citations99
US7928670B2Apr 19, 2011
LED driver with multiple feedback loops
IWATT INC55 citations98
US7505287B1Mar 17, 2009
On-time control for constant current mode in a flyback power supply
IWATT INC83 citations98
US6972969B1Dec 6, 2005
System and method for controlling current limit with primary side sensing
IWATT INC122 citations98
US6894911B2May 17, 2005
Method of driving a power converter by using a power pulse and a sense pulse
IWATT INC262 citations98
US6385059B1May 7, 2002
Transformer-coupled switching power converter having primary feedback control
IWATT INC176 citations98
US8018743B2Sep 13, 2011
Adaptive control for transition between multiple modulation modes in a switching power converter
IWATT INC71 citations97
US6956750B1Oct 18, 2005
Power converter controller having event generator for detection of events and generation of digital error
IWATT INC156 citations97
US6900995B2May 31, 2005
PWM power converter controlled by transistion detection of a comparator error signal
IWATT INC94 citations97
US6882552B2Apr 19, 2005
Power converter driven by power pulse and sense pulse
IWATT INC138 citations97
US7433211B1Oct 7, 2008
System and method for input current shaping in a power converter
IWATT INC44 citations96
US6862198B2Mar 1, 2005
PWM power converter with digital sampling control circuitry
IWATT INC62 citations95
US7558093B1Jul 7, 2009
Power converter with emulated peak current mode control
IWATT INC35 citations93
US7317625B2Jan 8, 2008
Parallel current mode control using a direct duty cycle algorithm with low computational requirements to perform power factor correction
IWATT INC42 citations93
US7936132B2May 3, 2011
LED lamp
IWATT INC46 citations92
US7880447B1Feb 1, 2011
Power converter controller IC having input voltage pin with multiple functions
IWATT INC13 citations92
US7443700B2Oct 28, 2008
On-time control for constant current mode in a flyback power supply
IWATT INC39 citations92
US6990000B1Jan 24, 2006
Reconstruction of the output voltage of an AC-DC power converter
IWATT INC44 citations92
US6621255B2Sep 16, 2003
Linear AC to DC regulator with synchronous rectification
IWATT INC24 citations92
US8049481B2Nov 1, 2011
Adaptive multi-mode digital control improving light-load efficiency in switching power converters
IWATT INC29 citations91
US7474130B1Jan 6, 2009
Compensation of voltage-to-current converter
IWATT INC20 citations91
US7336058B1Feb 26, 2008
Multistage low dropout voltage regulation
IWATT INC30 citations91
US8964421B2Feb 24, 2015
Powering a synchronous rectifier controller
IWATT INC9 citations84
US8854842B2Oct 7, 2014
Digital communication link between secondary side and primary side of switching power converter
IWATT INC9 citations84
US8823283B2Sep 2, 2014
Power dissipation monitor for current sink function of power switching transistor
IWATT INC10 citations84
US7876582B2Jan 25, 2011
Compensating on-time delay of switching transistor in switching power converters
IWATT INC10 citations84
US7724547B1May 25, 2010
Compensating on-time delay of switching transistor in switching power converters
IWATT INC12 citations84
US7589983B1Sep 15, 2009
Power converter controller controlled by variable reference voltage generated by dual output digital to analog converter
IWATT INC21 citations84
US7554821B1Jun 30, 2009
System and method for input current shaping in a power converter
IWATT INC9 citations84
US7548438B1Jun 16, 2009
System and method for input current shaping in a power converter
IWATT INC9 citations84
US7514913B2Apr 7, 2009
Parallel current mode control using a direct duty cycle algorithm with low computational requirements to perform power factor correction
IWATT INC16 citations84
US7511973B2Mar 31, 2009
Constant current mode ripple attenuation method in flyback power supply
IWATT INC12 citations84
US7382308B1Jun 3, 2008
Reference buffer using current mirrors and source followers to generate reference voltages
IWATT INC12 citations83
US9326343B2Apr 26, 2016
Integrated LED dimmer controller
IWATT INC10 citations82
US8970115B2Mar 3, 2015
Delaying startup under fault conditions
IWATT INC7 citations82
US7974109B2Jul 5, 2011
Digital compensation for cable drop in a primary side control power supply controller
IWATT INC10 citations82
US9420645B2Aug 16, 2016
Constant current control buck converter without current sense
IWATT INC5 citations73
US9318963B2Apr 19, 2016
Switching power converter with secondary to primary messaging
IWATT INC5 citations73
US9184667B2Nov 10, 2015
Switching power converter with primary-side dynamic load detection and primary-side feedback and control
IWATT INC4 citations73
US9154039B2Oct 6, 2015
Switching power converter with secondary-side dynamic load detection and primary-side feedback and control
IWATT INC5 citations73
US8995150B2Mar 31, 2015
Primary side sense output current regulation
IWATT INC4 citations72
US8933675B2Jan 13, 2015
Two-inductor based AC-DC offline power converter with high efficiency
IWATT INC4 citations72
US8723437B1May 13, 2014
Filter bandwidth adjustment in a multi-loop dimmer control circuit
IWATT INC4 citations71
US8982584B2Mar 17, 2015
Power supply regulation for ultra-low load and no-load operation
IWATT INC2 citations63
US8964422B2Feb 24, 2015
EMI frequency spreading method for switching power converter
IWATT INC3 citations63
US6765774B2Jul 20, 2004
High impedance insertion system for blocking EMI
IWATT INC6 citations63
US9071147B2Jun 30, 2015
Average input current estimation based on primary side current sense
IWATT INC3 citations62
US7739626B2Jun 15, 2010
Method and apparatus for small die low power system-on-chip design with intelligent power supply chip
IWATT INC6 citations61
US7974107B2Jul 5, 2011
System and method for controlling a current limit with primary side sensing using a hybrid PWM and PFM control
IWATT INC5 citations60
Showing the top 50 of 56 patents by PatentIndex Score.