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Hangseok Choi
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Bedford, NH, US
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Patents Grants
last 30 patents
Information
Patent Grant
Adaptive overvoltage protection for adaptive power adapters
Patent number
10,396,571
Issue date
Aug 27, 2019
FAIRCHILD SEMICONDUCTOR CORPORATION
Dibyendu Rana
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Power supply with near valley switching
Patent number
10,256,735
Issue date
Apr 9, 2019
FAIRCHILD SEMICONDUCTOR CORPORATION
Zhibo Tao
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
Power factor correction circuit with calculated duty compensation a...
Patent number
10,103,618
Issue date
Oct 16, 2018
Semiconductor Components Industries, LLC
Jintae Kim
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Self-tuning adaptive dead time control for continuous conduction mo...
Patent number
10,027,235
Issue date
Jul 17, 2018
FAIRCHILD SEMICONDUCTOR CORPORATION
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Adaptive turn-off trigger blanking for synchronous rectification
Patent number
10,008,950
Issue date
Jun 26, 2018
Semiconductor Components Industries, LLC
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Gate pre-positioning for fast turn-off of synchronous rectifier
Patent number
9,991,810
Issue date
Jun 5, 2018
FAIRCHILD SEMICONDUCTOR CORPORATION
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Adaptive turn-off trigger blanking for synchronous rectification
Patent number
9,825,548
Issue date
Nov 21, 2017
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Control of a startup circuit using a feedback pin of a PWM controll...
Patent number
9,812,976
Issue date
Nov 7, 2017
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Dual-edge tracking synchronous rectifier control techniques for a r...
Patent number
9,584,035
Issue date
Feb 28, 2017
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Switching techniques to reduce current overshoot in a DC to DC conv...
Patent number
9,312,746
Issue date
Apr 12, 2016
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Synchronous rectifier control techniques for a resonant converter
Patent number
9,083,247
Issue date
Jul 14, 2015
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Soft-start control techniques for a switched-mode power supply
Patent number
9,030,183
Issue date
May 12, 2015
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Hybrid control techniques for series resonant converter
Patent number
8,817,498
Issue date
Aug 26, 2014
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Sampled charge control for resonant converter
Patent number
8,576,583
Issue date
Nov 5, 2013
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Method and apparatus for bridgeless power factor correction
Patent number
8,482,942
Issue date
Jul 9, 2013
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Continuous conduction mode power factor correction circuit with red...
Patent number
8,279,630
Issue date
Oct 2, 2012
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Cable voltage drop compensation for battery chargers
Patent number
8,143,845
Issue date
Mar 27, 2012
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Phase management for interleaved power factor correction
Patent number
8,098,505
Issue date
Jan 17, 2012
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Current mode control for resonant converter circuits
Patent number
8,085,559
Issue date
Dec 27, 2011
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
ADAPTIVE TURN-OFF TRIGGER BLANKING FOR SYNCHRONOUS RECTIFICATION
Publication number
20180048241
Publication date
Feb 15, 2018
FAIRCHILD SEMICONDUCTOR CORPORATION
Hangseok CHOI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
GATE PRE-POSITIONING FOR FAST TURN-OFF OF SYNCHRONOUS RECTIFIER
Publication number
20170244333
Publication date
Aug 24, 2017
FAIRCHILD SEMICONDUCTOR CORPORATION
Hangseok CHOI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
SELF-TUNING ADAPTIVE DEAD TIME CONTROL FOR CONTINUOUS CONDUCTION MO...
Publication number
20170222569
Publication date
Aug 3, 2017
FAIRCHILD SEMICONDUCTOR CORPORATION
Hangseok CHOI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
ADAPTIVE TURN-OFF TRIGGER BLANKING FOR SYNCHRONOUS RECTIFICATION
Publication number
20170222568
Publication date
Aug 3, 2017
FAIRCHILD SEMICONDUCTOR CORPORATION
Hangseok CHOI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
POWER FACTOR CORRECTION CIRCUIT AND DRIVING METHOD THEREOF
Publication number
20170194853
Publication date
Jul 6, 2017
FAIRCHILD KOREA SEMICONDUCTOR LTD.
Jintae KIM
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
CONTROL OF A STARTUP CIRCUIT USING A FEEDBACK PIN OF A PWM CONTROLL...
Publication number
20170005583
Publication date
Jan 5, 2017
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
POWER SUPPLY WITH NEAR VALLEY SWITCHING
Publication number
20160261201
Publication date
Sep 8, 2016
Fairchild Semiconductor Corporation
Zhibo TAO
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
ADAPTIVE OVERVOLTAGE PROTECTION FOR ADAPTIVE POWER ADAPTERS
Publication number
20160241016
Publication date
Aug 18, 2016
Fairchild Semiconductor Corporation
Dibyendu RANA
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
DUAL-EDGE TRACKING SYNCHRONOUS RECTIFIER CONTROL TECHNIQUES FOR A R...
Publication number
20150131336
Publication date
May 14, 2015
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Soft-Start Control Techniques for a Switched-Mode Power Supply
Publication number
20140042994
Publication date
Feb 13, 2014
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
SYNCHRONOUS RECTIFIER CONTROL TECHNIQUES FOR A RESONANT CONVERTER
Publication number
20140043865
Publication date
Feb 13, 2014
Fairchild Semiconductor Corporation
Hangseok Choi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
HYBRID CONTROL TECHNIQUES FOR SERIES RESONANT CONVERTER
Publication number
20130010503
Publication date
Jan 10, 2013
Hangseok CHOI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
SWITCHING TECHNIQUES TO REDUCE CURRENT OVERSHOOT IN A DC TO DC CONV...
Publication number
20120287679
Publication date
Nov 15, 2012
Hangseok CHOI
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
SAMPLED CHARGE CONTROL FOR RESONANT CONVERTER
Publication number
20120069605
Publication date
Mar 22, 2012
Hangseok CHOI
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
METHOD AND APPARATUS FOR BRIDGELESS POWER FACTOR CORRECTION
Publication number
20120051107
Publication date
Mar 1, 2012
Hangseok CHOI
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Continuous Conduction Mode Power Factor Correction Circuit With Red...
Publication number
20110038188
Publication date
Feb 17, 2011
Hangseok CHOI
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Cable Voltage Drop Compensation For Battery Chargers
Publication number
20100148730
Publication date
Jun 17, 2010
Hangseok CHOI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER