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Patent Searching and Data


Title:
POWER ON RESET CIRCUIT AND ISOLATED HALF-BRIDGE DRIVER
Document Type and Number:
WIPO Patent Application WO/2019/227422
Kind Code:
A1
Abstract:
The application discloses a power on reset (POR) circuit and an isolated half-bridge driver. The POR circuit comprises: a delay circuit, an inverter circuit and a switching circuit, wherein one end of the delay circuit is coupled to a power supply, the other end of the delay circuit is coupled to ground, the delay circuit is for outputting a voltage signal as the voltage of the power supply rises from zero to a steady voltage, the inverter circuit is for inverting the voltage signal to obtain a control signal, and the switching circuit is switched on by the control signal so as to output the power supply voltage or ground as a reset signal. According to the solution provided in embodiments of the application, in the process of powering on the power supply, the switching circuit is switched on by means of the power supply voltage, so that the power supply voltage or ground is output as the reset signal; further, stable output of the reset signal in the entire process of powering on of the power supply can be realized, improving the reliability of the POR circuit.

Inventors:
ZHU YU (CN)
LI ZHENG (CN)
WANG GUORUI (CN)
WANG MINGGUI (CN)
HOU HUIQI (CN)
ZHANG ZHENMING (CN)
CAI ZHONGHUA (CN)
PANG ZHIYUAN (CN)
WANG CHEN (CN)
Application Number:
PCT/CN2018/089333
Publication Date:
December 05, 2019
Filing Date:
May 31, 2018
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H03K17/22
Foreign References:
CN106972846A2017-07-21
CN103066972A2013-04-24
CN106921371A2017-07-04
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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