Title:
POWER SUPPLY PROTECTION CIRCUIT, METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/040789
Kind Code:
A1
Abstract:
A power supply protection circuit comprises: an auxiliary winding for sampling voltages at two ends of a capacitor in a switching power supply; a resistance-capacitance (RC) charging circuit connected to the auxiliary winding and used to convert voltages sampled by the auxiliary winding into current signals; and a control circuit used to control, according to the current signals, switching on and off of the switching power supply.
More Like This:
Inventors:
WANG PENGCHAO (CN)
WANG HONG (CN)
GAO YANGHUAI (CN)
LIU FENG (CN)
WANG FANGCHUN (CN)
YANG YUNDONG (CN)
WANG HONG (CN)
GAO YANGHUAI (CN)
LIU FENG (CN)
WANG FANGCHUN (CN)
YANG YUNDONG (CN)
Application Number:
PCT/CN2017/093893
Publication Date:
March 08, 2018
Filing Date:
July 21, 2017
Export Citation:
Assignee:
ZTE CORP (CN)
International Classes:
H02H7/125
Foreign References:
CN105004910A | 2015-10-28 | |||
CN101566675A | 2009-10-28 | |||
CN103329416A | 2013-09-25 | |||
CN105337260A | 2016-02-17 | |||
US5617013A | 1997-04-01 |
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
Download PDF: