Title:
POWER ADAPTER, OVER-CURRENT PROTECTION CIRCUIT, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/207789
Kind Code:
A1
Abstract:
Provided in the embodiments of the present application are a power adapter, an over-current protection circuit, and an electronic device. A primary control chip in the power adapter is in isolation connection with a secondary protocol chip in the power adapter; the primary control chip comprises a main control circuit, wherein a power circuit controls the primary control chip by means of the main control circuit; and the secondary protocol chip comprises an over-current protection circuit, wherein the over-current protection circuit comprises a sampling sub-circuit, a control sub-circuit, a comparison sub-circuit, an anti-shake sub-circuit and a protection sub-circuit. In the present application, a secondary optocoupler current is collected by means of a sampling sub-circuit, so as to generate a detection signal, the control sub-circuit collects a secondary output voltage and a primary input voltage, so as to generate a detection signal threshold value, the comparison sub-circuit compares the detection signal with the detection signal threshold value, the anti-shake sub-circuit performs anti-shake detection on a comparison result, the protection sub-circuit generates a first protection signal according to the comparison result which passes the anti-shake detection, and the secondary protocol chip realizes over-current protection according to the first protection signal.
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Inventors:
ZHU KUANG (CN)
CHEN WEI (CN)
CHEN WEI (CN)
Application Number:
PCT/CN2023/089793
Publication Date:
November 02, 2023
Filing Date:
April 21, 2023
Export Citation:
Assignee:
SHENZHEN INJOINIC TECH CO LTD (CN)
International Classes:
H02M1/32; H02H7/12; H02M1/08; H02M3/335
Foreign References:
| CN114567155A | 2022-05-31 | |||
| CN112968425A | 2021-06-15 | |||
| CN212183410U | 2020-12-18 | |||
| JP2018102113A | 2018-06-28 |
Other References:
HE QIFENG; GAO DONGHUI; XU CHENGBAO: "The Design of a Multifunctional DC/DC Converter based on Magnetic Isolation Bidirectional Transmission", APPLICATION OF ELECTRONIC TECHNIQUE, HUABEI JISUAN JIXI TONGGONGCHENG YANJIUSUO (XINXI YEBU DIANZI LIUSUO), CN, vol. 46, no. 07, 6 July 2020 (2020-07-06), CN , pages 118 - 126, XP009550060, ISSN: 0258-7998
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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