Haijun ZHANG

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Bootstrap circuit supporting fast charging and discharging and chip
- Patent number 11,770,120
- Issue date Sep 26, 2023
- Zhifei Yang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Current detection circuit for loudspeaker
- Patent number 11,698,393
- Issue date Jul 11, 2023
- Shanghai Awinic Technology Co., LTD
- Zhifei Yang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Detection circuit and electronic device using the same
- Patent number 10,992,222
- Issue date Apr 27, 2021
- Shanghai Awinic Technology Co., LTD
- Zhifei Yang
- G01 - MEASURING TESTING
Information Patent Grant
Open-loop charge pump for increasing ripple frequency of output vol...
- Patent number 10,985,650
- Issue date Apr 20, 2021
- Shanghai Awinic Technology Co., LTD
- Haijun Zhang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
DIGITAL AUDIO POWER AMPLIFIER AND POWER AMPLIFIER LOOP
- Publication number 20220416734
- Publication date Dec 29, 2022
- Shanghai Awinic Technology Co., LTD
- Jianing ZHOU
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
CURRENT DETECTION CIRCUIT, CHIP, AND CURRENT DETECTION METHOD USED...
- Publication number 20220386023
- Publication date Dec 1, 2022
- SHANGHAI AWINIC TECHNOLOGY CO.,LTD
- Zhifei YANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
BOOTSTRAP CIRCUIT SUPPORTING FAST CHARGING AND DISCHARGING AND CHIP
- Publication number 20220352883
- Publication date Nov 3, 2022
- Shanghai Awinic Technology Co., LTD
- Zhifei YANG
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
CURRENT DETECTION CIRCUIT FOR LOUDSPEAKER
- Publication number 20220082592
- Publication date Mar 17, 2022
- Shanghai Awinic Technology Co., LTD
- Zhifei YANG
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Detection Circuit and Electronic Device Using the Same
- Publication number 20190245434
- Publication date Aug 8, 2019
- Shanghai Awinic Technology Co., LTD
- Zhifei YANG
- G01 - MEASURING TESTING
Information Patent Application
Open-Loop Charge Pump
- Publication number 20190222119
- Publication date Jul 18, 2019
- Shanghai Awinic Technology Co., LTD
- Haijun ZHANG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER