Assignee
SEMTECH CORP
US226 patents
Top patents by PatentIndex Score
US6813170B2Nov 2, 2004
Multiple output power supply having soft start protection for load over-current or short circuit conditions
SEMTECH CORP116 citations98
US6583610B2Jun 24, 2003
Virtual ripple generation in switch-mode power supplies
SEMTECH CORP255 citations98
US6441597B1Aug 27, 2002
Method and apparatus for sensing output inductor current in a DC-to-DC power converter
SEMTECH CORP273 citations98
US6424129B1Jul 23, 2002
Method and apparatus for accurately sensing output current in a DC-to-DC voltage converter
SEMTECH CORP156 citations98
US6495995B2Dec 17, 2002
Self-clocking multiphase power supply controller
SEMTECH CORP114 citations97
US6215290B1Apr 10, 2001
Multi-phase and multi-module power supplies with balanced current between phases and modules
SEMTECH CORP225 citations97
US6094038AJul 25, 2000
Buck converter with inductive turn ratio optimization
SEMTECH CORP143 citations97
US6703812B1Mar 9, 2004
Power converter having improved step down response for low duty cycle operation
SEMTECH CORP54 citations96
US6404175B1Jun 11, 2002
Multi-phase and multi-module power supplies with balanced current between phases and modules
SEMTECH CORP121 citations96
US6219262B1Apr 17, 2001
Circuit and method for adaptive leading edge blanking in pulse width modulated current mode switching power supply controllers
SEMTECH CORP59 citations96
US6504422B1Jan 7, 2003
Charge pump with current limiting circuit
SEMTECH CORP166 citations95
US6472856B2Oct 29, 2002
Bounded power supply voltage positioning
SEMTECH CORP55 citations95
US6057607AMay 2, 2000
Method and apparatus for voltage regulation in multi-output switched mode power supplies
SEMTECH CORP126 citations95
US7519005B2Apr 14, 2009
Single-wire communication bus for miniature low-power systems
SEMTECH CORP55 citations94
US5880511AMar 9, 1999
Low-voltage punch-through transient suppressor employing a dual-base structure
SEMTECH CORP87 citations94
US7508182B1Mar 24, 2009
Method and apparatus for improved current mode control for large conversion ratio synchronous buck converter with lossless current sense
SEMTECH CORP37 citations93
US6121816ASep 19, 2000
Slave clock generation system and method for synchronous telecommunications networks
SEMTECH CORP64 citations93
US9601461B2Mar 21, 2017
Semiconductor device and method of forming inverted pyramid cavity semiconductor package
SEMTECH CORP26 citations92
US7791415B2Sep 7, 2010
Fractional-N synthesized chirp generator
SEMTECH CORP45 citations92
US7580030B2Aug 25, 2009
Sensor for capacitive touch pad pointing device
SEMTECH CORP36 citations92
US6836157B2Dec 28, 2004
Method and apparatus for driving LEDs
SEMTECH CORP64 citations92
US6788554B2Sep 7, 2004
Switched mode power converter having synchronous rectification and secondary side post regulation
SEMTECH CORP33 citations92
US6714426B1Mar 30, 2004
Multiple-phase, multi-module power supply system for high frequency operation
SEMTECH CORP51 citations92
US6664774B2Dec 16, 2003
Offset peak current mode control circuit for multiple-phase power converter
SEMTECH CORP25 citations92
US6518725B2Feb 11, 2003
Charge balancing system
SEMTECH CORP50 citations92
US6483389B1Nov 19, 2002
Phase and frequency detector providing immunity to missing input clock pulses
SEMTECH CORP34 citations92
US6472852B1Oct 29, 2002
Resonant buck-type voltage converter using swinging inductance
SEMTECH CORP26 citations92
US6377032B1Apr 23, 2002
Method and apparatus for virtual current sensing in DC-DC switched mode power supplies
SEMTECH CORP112 citations92
US6239509B1May 29, 2001
Method and apparatus for voltage regulation in multi-output switched mode power supplies
SEMTECH CORP53 citations92
US6144565ANov 7, 2000
Variation on a single-ended primary inductor converter
SEMTECH CORP30 citations92
US9582111B2Feb 28, 2017
Method and device for improved accuracy of proximity and touch detection in mobile devices
SEMTECH CORP14 citations91
US9088293B1Jul 21, 2015
Calibration of a time-interleaved analog-to-digital converter (ADC) circuit
SEMTECH CORP23 citations91
US6836095B2Dec 28, 2004
Battery charging method and apparatus
SEMTECH CORP54 citations91
US6462521B1Oct 8, 2002
High-speed charge-mode controller for a multi-phase switched-mode power converter
SEMTECH CORP30 citations91
US6130526AOct 10, 2000
Voltage regulator with wide control bandwidth
SEMTECH CORP57 citations91
US6015999AJan 18, 2000
Low-voltage punch-through transient suppressor employing a dual-base structure
SEMTECH CORP34 citations91
US7714547B2May 11, 2010
Method and apparatus for constant on-time switch mode converters
SEMTECH CORP64 citations90
US6918049B2Jul 12, 2005
Method and apparatus for controlling the phase of the clock output of a digital clock
SEMTECH CORP26 citations90
US6828775B2Dec 7, 2004
High-impedance mode for precision measurement unit
SEMTECH CORP31 citations90
US7459959B2Dec 2, 2008
Method and apparatus for driving LED's
SEMTECH CORP41 citations89
US7265504B2Sep 4, 2007
High efficiency power supply for LED lighting applications
SEMTECH CORP65 citations89
US6917316B2Jul 12, 2005
Digital adjustment of gain and offset for digital to analog converters
SEMTECH CORP22 citations89
US6794926B2Sep 21, 2004
Charge pump with current limiting circuit
SEMTECH CORP18 citations89
US7590151B2Sep 15, 2009
Method and apparatus for aligning time references when separated by an unreliable data packet network
SEMTECH CORP42 citations86
US7471072B2Dec 30, 2008
Switched mode power supply having variable minimum switching frequency
SEMTECH CORP29 citations84
US7268527B2Sep 11, 2007
Method and apparatus for determining load current in a CPU core voltage regulator
SEMTECH CORP41 citations84
US7064575B2Jun 20, 2006
Method and system for adaptively controlling output driver impedance
SEMTECH CORP14 citations84
US6557063B1Apr 29, 2003
Power conservation with a synchronous master-slave serial data bus
SEMTECH CORP16 citations84
US6486871B1Nov 26, 2002
Pointing device with Z-axis functionality and reduced component count
SEMTECH CORP16 citations84
US10298280B2May 21, 2019
Proximity sensor with nonlinear filter and method
SEMTECH CORP6 citations83
Showing the top 50 of 226 patents by PatentIndex Score.