Inventor
TANG CHIEN-FU
TW61 patents
⚠️ This page may combine multiple inventors who share the name “TANG CHIEN-FU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICHTEK TECHNOLOGY CORP
32 patentsUS10560012B1Feb 11, 2020
ZVS control circuit for use in a flyback power converter
RICHTEK TECHNOLOGY CORP10 citations84
US8350548B2Jan 8, 2013
Frequency control circuit and method for a non-constant frequency voltage regulator
RICHTEK TECHNOLOGY CORP8 citations84
US8704590B2Apr 22, 2014
Control circuit for power converter and method thereof
RICHTEK TECHNOLOGY CORP6 citations83
US7576522B2Aug 18, 2009
Circuit and method for soft start of a switching regulator from a residual voltage
RICHTEK TECHNOLOGY CORP7 citations74
US11303218B2Apr 12, 2022
Low delay time power converter circuit and driver circuit thereof
RICHTEK TECHNOLOGY CORP4 citations73
US10461624B2Oct 29, 2019
Power switch control circuit and open detection method thereof
RICHTEK TECHNOLOGY CORP2 citations73
US10461652B2Oct 29, 2019
Flyback power converter and secondary side control circuit thereof
RICHTEK TECHNOLOGY CORP2 citations73
US9614449B2Apr 4, 2017
Flyback power converter with programmable output and control circuit and control method thereof
RICHTEK TECHNOLOGY CORP3 citations73
US9104216B2Aug 11, 2015
Mixed mode compensation circuit and method for a power converter
RICHTEK TECHNOLOGY CORP5 citations73
US10326351B2Jun 18, 2019
Switching regulator and control circuit thereof
RICHTEK TECHNOLOGY CORP2 citations72
US9130464B2Sep 8, 2015
Soft-start switching power converting apparatus with pulse-frequency modulation technique
RICHTEK TECHNOLOGY CORP5 citations72
US8779806B2Jul 15, 2014
Circuit and method for improving noise immunity of a single-end level shifter in a floating gate driver
RICHTEK TECHNOLOGY CORP4 citations72
US9136766B2Sep 15, 2015
Switching power converting apparatus
RICHTEK TECHNOLOGY CORP2 citations63
US11489439B1Nov 1, 2022
Spike suppression circuit and power converter and control method thereof
RICHTEK TECHNOLOGY CORP0 citations62
US9093914B2Jul 28, 2015
Bootstrap circuit and method for controlling the same
RICHTEK TECHNOLOGY CORP2 citations62
US8717091B2May 6, 2014
Control circuit for power converter and method thereof
RICHTEK TECHNOLOGY CORP2 citations61
US8823424B1Sep 2, 2014
Circuit and method for improving noise immunity of a single-end level shifter in a floating gate driver
RICHTEK TECHNOLOGY CORP3 citations60
US12537446B2Jan 27, 2026
Adaptive slew rate resonant power converter and conversion control circuit and control method thereof
RICHTEK TECHNOLOGY CORP0 citations59
US9270186B2Feb 23, 2016
Voltage converting controller, voltage converting circuit, and control method for voltage converting
RICHTEK TECHNOLOGY CORP2 citations56
US10153703B2Dec 11, 2018
Flyback power converter with programmable output and control circuit and control method thereof
RICHTEK TECHNOLOGY CORP0 citations52
US9964972B2May 8, 2018
Mixed mode compensation circuit
RICHTEK TECHNOLOGY CORP0 citations52
US9703302B2Jul 11, 2017
Mixed mode compensation circuit
RICHTEK TECHNOLOGY CORP0 citations52
US9541929B2Jan 10, 2017
Mixed mode compensation circuit
RICHTEK TECHNOLOGY CORP0 citations52
US9024607B2May 5, 2015
Control circuit for power converter and method thereof
RICHTEK TECHNOLOGY CORP1 citations52
US7800425B2Sep 21, 2010
On-chip mode-setting circuit and method for a chip
RICHTEK TECHNOLOGY CORP1 citations52
US11784570B2Oct 10, 2023
Power path switch circuit
RICHTEK TECHNOLOGY CORP0 citations51
US9219352B2Dec 22, 2015
Power off delay circuit and method, and audio system with power off delay
RICHTEK TECHNOLOGY CORP0 citations51
US9203319B2Dec 1, 2015
Soft-start switching power converting apparatus with pulse-frequency modulation technique
RICHTEK TECHNOLOGY CORP0 citations51
US8791725B2Jul 29, 2014
High voltage offset detection circuit
RICHTEK TECHNOLOGY CORP1 citations50
US12556176B2Feb 17, 2026
Gate drive circuit
RICHTEK TECHNOLOGY CORP0 citations48
US11169179B2Nov 9, 2021
Current sensing circuit having self calibration
RICHTEK TECHNOLOGY CORP0 citations47
US9570989B2Feb 14, 2017
Control circuit of power converter with error detection circuit and reverse adjusting circuit
RICHTEK TECHNOLOGY CORP0 citations42
TANG CHIEN-FU
8 patentsUS8570020B2Oct 29, 2013
Frequency control circuit and method for a non-constant frequency voltage regulator
TANG CHIEN-FU16 citations84
US8253507B2Aug 28, 2012
Fixed-frequency control circuit and method for pulse width modulation
TANG CHIEN-FU10 citations84
US8634212B2Jan 21, 2014
Controller and controlling method for power converter
TANG CHIEN-FU6 citations73
US9362834B2Jun 7, 2016
Flyback power supply circuit with programmable function and control method thereof
TANG CHIEN-FU5 citations72
US8295022B2Oct 23, 2012
Overstress protection apparatus and method
TANG CHIEN-FU6 citations71
US8724349B2May 13, 2014
Apparatus and method for output voltage calibration of a primary feedback flyback power module
TANG CHIEN-FU3 citations62
US8754617B2Jun 17, 2014
Reverse shunt regulator
TANG CHIEN-FU3 citations61
US8643292B2Feb 4, 2014
Digital dimming device and digital dimming method
TANG CHIEN-FU3 citations60
TANG CHIEN FU
2 patentsPAN JIUN-HUNG
1 patentTSENG PEI-KAI
1 patentLIN KUN-YU
1 patentLEE YEN-TE
1 patentCHENG JUNG-PEI
1 patentCHEN AN-TUNG
1 patentRICKTEK TECHNOLOGY CORP
1 patentLIN CHI-HUA
1 patentShowing the top 50 of 61 patents by PatentIndex Score.