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Zhaohui He
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Austin, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Distortion reducing variable output impedance class-D amplifier
Patent number
11,290,069
Issue date
Mar 29, 2022
Cirrus Logic, Inc.
Zhaohui He
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Class-D amplifier with multiple power rails and quantizer that swit...
Patent number
11,245,370
Issue date
Feb 8, 2022
Cirrus Logic, Inc.
Zhaohui He
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Class-D amplifier with multiple independent output stages
Patent number
10,972,061
Issue date
Apr 6, 2021
Cirrus Logic, Inc.
Zhaohui He
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Low power dissipation high performance Class-D amplifier
Patent number
10,862,442
Issue date
Dec 8, 2020
Cirrus Logic, Inc.
Zhaohui He
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Apparatus and method of suppressing transient noise during transiti...
Patent number
10,476,455
Issue date
Nov 12, 2019
Cirrus Logic, Inc.
Paul Astrachan
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Removal of switching discontinuity in a hybrid switched mode amplifier
Patent number
10,090,814
Issue date
Oct 2, 2018
Cirrus Logic, Inc.
John L. Melanson
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Switched mode converter with variable common mode voltage buffer
Patent number
9,985,587
Issue date
May 29, 2018
Cirrus Logic, Inc.
Zhaohui He
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Generation of voltage reference signals in a hybrid switched mode a...
Patent number
9,973,156
Issue date
May 15, 2018
Cirrus Logic, Inc.
Eric J. King
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Prevention of switching discontinuity in a hybrid switched mode amp...
Patent number
9,929,664
Issue date
Mar 27, 2018
Cirrus Logic, Inc.
Eric J. King
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Hybrid switched mode amplifier
Patent number
9,906,196
Issue date
Feb 27, 2018
Cirrus Logic, Inc.
Zhaohui He
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Utilizing secondary-side conduction time parameters of a switching...
Patent number
9,577,538
Issue date
Feb 21, 2017
Koninklijke Philips N.V.
Yanhui Xie
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Acceleration of output energy provision for a load during start-up...
Patent number
9,520,794
Issue date
Dec 13, 2016
Philips Lighting Holding B.V.
Siddharth Maru
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Power control system with power drop out immunity and uncompromised...
Patent number
9,515,485
Issue date
Dec 6, 2016
Philips Lighting Holding B.V.
William A. Draper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Switching parameter based discontinuous mode-critical conduction mo...
Patent number
9,502,984
Issue date
Nov 22, 2016
Koninklijke Philips N.V.
John L. Melanson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Primary-side control of a switching power converter with feed forwa...
Patent number
9,351,356
Issue date
May 24, 2016
Koninklijke Philips N.V.
Zhaohui He
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Control data determination from primary-side sensing of a secondary...
Patent number
9,313,840
Issue date
Apr 12, 2016
Cirrus Logic, Inc.
Robert T. Grisamore
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Input voltage sensing for a switching power converter and a triac-b...
Patent number
9,307,601
Issue date
Apr 5, 2016
Koninklijke Philips N.V.
Zhaohui He
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Active thermal protection for switches
Patent number
9,184,666
Issue date
Nov 10, 2015
Mohit Sood
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Inductor over-current protection using a volt-second value represen...
Patent number
9,178,415
Issue date
Nov 3, 2015
Cirrus Logic, Inc.
Michael A. Kost
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Multi-mode flyback control for a switching power converter
Patent number
9,178,444
Issue date
Nov 3, 2015
Siddharth Maru
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Quantization error reduction in constant output current control dri...
Patent number
9,166,485
Issue date
Oct 20, 2015
Siddharth Maru
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Adaptive current control timing and responsive current control for...
Patent number
9,071,144
Issue date
Jun 30, 2015
Cirrus Logic, Inc.
Zhaohui He
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Switching parameter based discontinuous mode-critical conduction mo...
Patent number
9,025,347
Issue date
May 5, 2015
Cirrus Logic, Inc.
John L. Melanson
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Utilizing secondary-side conduction time parameters of a switching...
Patent number
9,024,541
Issue date
May 5, 2015
Cirrus Logic, Inc.
Yanhui Xie
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Power control system with power drop out immunity and uncompromised...
Patent number
8,487,591
Issue date
Jul 16, 2013
Cirrus Logic, Inc.
William A. Draper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Low energy transfer mode for auxiliary power supply operation in a...
Patent number
8,212,493
Issue date
Jul 3, 2012
Cirrus Logic, Inc.
John L. Melanson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
NON-LINEAR FUNCTION IN AN EARLY-SAMPLED HYBRID MULTI-LEVEL CONVERTE...
Publication number
20230344394
Publication date
Oct 26, 2023
Cirrus Logic International Semiconductor Ltd.
John L. MELANSON
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
CALIBRATION OF FULLY-DIFFERENTIAL INPUT SYSTEM
Publication number
20230122151
Publication date
Apr 20, 2023
Cirrus Logic International Semiconductor Ltd.
Zhaohui HE
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
DRIVER CIRCUITRY AND OPERATION
Publication number
20220376618
Publication date
Nov 24, 2022
Cirrus Logic International Semiconductor Ltd.
Yongjie CHENG
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
DISTORTION REDUCING VARIABLE OUTPUT IMPEDANCE CLASS-D AMPLIFIER
Publication number
20210044265
Publication date
Feb 11, 2021
Cirrus Logic International Semiconductor Ltd.
ZHAOHUI HE
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
CLASS-D AMPLIFIER WITH MULTIPLE POWER RAILS AND QUANTIZER THAT SWIT...
Publication number
20210044264
Publication date
Feb 11, 2021
Cirrus Logic International Semiconductor Ltd.
ZHAOHUI HE
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
CLASS-D AMPLIFIER WITH MULTIPLE INDEPENDENT OUTPUT STAGES
Publication number
20190149101
Publication date
May 16, 2019
Cirrus Logic International Semiconductor Ltd.
ZHAOHUI HE
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
LOW POWER DISSIPATION HIGH PERFORMANCE CLASS-D AMPLIFIER
Publication number
20190149107
Publication date
May 16, 2019
Cirrus Logic International Semiconductor Ltd.
ZHAOHUI HE
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
REMOVAL OF SWITCHING DISCONTINUITY IN A HYBRID SWITCHED MODE AMPLIFIER
Publication number
20170272044
Publication date
Sep 21, 2017
Cirrus Logic International Semiconductor Ltd.
John L. MELANSON
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PREVENTION OF SWITCHING DISCONTINUITY IN A HYBRID SWITCHED MODE AMP...
Publication number
20170271996
Publication date
Sep 21, 2017
Cirrus Logic International Semiconductor Ltd.
Eric J. KING
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
SWITCHED MODE CONVERTER WITH VARIABLE COMMON MODE VOLTAGE BUFFER
Publication number
20170207755
Publication date
Jul 20, 2017
Cirrus Logic International Semiconductor Ltd.
Zhaohui HE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
HYBRID SWITCHED MODE AMPLIFIER
Publication number
20170207759
Publication date
Jul 20, 2017
Cirrus Logic International Semiconductor Ltd.
Zhaohui HE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Adaptive Current Control Timing and Responsive Current Control for...
Publication number
20150351178
Publication date
Dec 3, 2015
Cirrus Logic, Inc.
Zhaohui He
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Utilizing Secondary-Side Conduction Time Parameters of a Switching...
Publication number
20150340956
Publication date
Nov 26, 2015
Cirrus Logic, Inc.
Yanhui Xie
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Switching Parameter Based Discontinuous Mode-Critical Conduction Mo...
Publication number
20150340955
Publication date
Nov 26, 2015
Cirrus Logic, Inc.
John L. Melanson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Utilizing Secondary-Side Conduction Time Parameters of a Switching...
Publication number
20140252981
Publication date
Sep 11, 2014
Cirrus Logic, Inc.
Yanhui Xie
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Quantization Error Reduction in Constant Output Current Control Dri...
Publication number
20140252990
Publication date
Sep 11, 2014
Cirrus Logic, Inc.
Siddharth Maru
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
ACTIVE THERMAL PROTECTION FOR SWITCHES
Publication number
20140028213
Publication date
Jan 30, 2014
Mohit Sood
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
ACCELERATION OF OUTPUT ENERGY PROVISION FOR A LOAD DURING START-UP...
Publication number
20140028095
Publication date
Jan 30, 2014
Siddharth Maru
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Adaptive Current Control Timing and Responsive Current Control for...
Publication number
20130154495
Publication date
Jun 20, 2013
Cirrus Logic, Inc.
Zhaohui He
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
MULTI-MODE FLYBACK CONTROL FOR A SWITCHING POWER CONVERTER
Publication number
20130154496
Publication date
Jun 20, 2013
Cirrus Logic, Inc.
Siddharth Maru
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Input Voltage Sensing For A Switching Power Converter And A Triac-B...
Publication number
20130002163
Publication date
Jan 3, 2013
Zhaohui He
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
CONTROL DATA DETERMINATION FROM PRIMARY-SIDE SENSING OF A SECONDARY...
Publication number
20120306406
Publication date
Dec 6, 2012
Robert T. Grisamore
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Primary-Side Control Of A Switching Power Converter With Feed Forwa...
Publication number
20120306407
Publication date
Dec 6, 2012
Zhaohui He
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Switching Parameter Based Discontinuous Mode-Critical Conduction Mo...
Publication number
20120153858
Publication date
Jun 21, 2012
John L. Melanson
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
LOW ENERGY TRANSFER MODE FOR AUXILIARY POWER SUPPLY OPERATION IN A...
Publication number
20100327765
Publication date
Dec 30, 2010
John L. Melanson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER