FARAD CAPACITOR CHARGING CIRCUIT AND ELECTRONIC DEVICE

WIPO Patent Application WO/2019/165596

A1

A Farad capacitor charging circuit and an electronic device. The Farad capacitor charging circuit comprises a direct-current/direct-current controller (10), a sampling unit (20), a discharging unit (40) and a comparison unit (30). An output pin of the direct-current/direct-current controller (10) is connected to one end of a Farad capacitor (C), and an output regulation pin (SS) thereof is grounded by means of a starting capacitor (Css); the sampling unit (20) is connected in series between the other end of the Farad capacitor (C) and the ground; the discharging unit (40) is connected in parallel to the starting capacitor (Css); and the comparison unit (30) is used for detecting a voltage component of the sampling unit (20), and comparing the voltage component to a preset voltage, such that the discharging unit (40) is controlled, according to a comparison result, to discharge so as to regulate the magnitude of the current of the charging signal. An output current of a charging controller is regulated by means of a structurally simple and low-cost detection, comparison and discharging feedback link. Moreover, a limit value of the output current can be set by regulating a resistance value of the sampling unit (20) or regulating a reference voltage of the comparison unit (30).

ZHANG GENGXU (CN)
LI WENXIANG (CN)

PCT/CN2018/077540

September 06, 2019

February 28, 2018

Click for automatic bibliography generation  

SHENZHEN CHENRUI SOFTWARE CO LTD (CN)

H02J15/00; H02J7/02

CN102447293A	2012-05-09
CN201813199U	2011-04-27
CN104348200A	2015-02-11
CN206302195U	2017-07-04
CN106787006A	2017-05-31
JP2006033304A	2006-02-02

SHENZHEN ZHONGYI PATENT AND TRADEMARK OFFICE (CN)

View/Download PDF      PDF Help

Previous Patent: INTEGRATED TUBULAR WATERPROOF LAMP

Next Patent: Functionalized polyimides and membranes for gas separations