Title:
SHORT-CIRCUIT PROTECTION CIRCUIT, POWER ADAPTER, AND MOBILE TERMINAL
Document Type and Number:
WIPO Patent Application WO/2018/166449
Kind Code:
A1
Abstract:
A short-circuit protection circuit (10), a power adapter, and a mobile terminal. The short-circuit protection circuit comprises a switch device (11), a control circuit (12), an acquisition circuit (13), a reference circuit (14), and a current transformer (15). A first end (111) of the switch device (11) is connected with a high-voltage reference ground end of the power adapter; a second end (112) of the switch device (11) is connected with a first end of a first capacitor (C1) of the power adaptor by means of an input coil (51) of the current transformer (15); a second end of the first capacitor (C1) is connected with a low-voltage reference ground end or low-voltage positive electrode of the power adapter; a third end (113) of the switch device (11) is connected with a control end (123) of the control circuit (12); a first detection end (121) of the control circuit (12) is connected with an output end (132) of the acquisition circuit (13); a first input end (131) of the acquisition circuit (13) is connected to one end of an output coil (52) of the current transformer (15); a second input end (133) of the acquisition circuit (13) is connected to the other end of the output coil (52) of the current transformer (15); a second detection end (122) of the control circuit (12) is connected with an output end (141) of the reference circuit (14). The present short-circuit protection circuit, power adapter, and mobile terminal can be used for preventing the danger of an electrical shock when a power adaptor charges a mobile terminal.
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Inventors:
YANG BO (CN)
Application Number:
PCT/CN2018/078872
Publication Date:
September 20, 2018
Filing Date:
March 13, 2018
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H02H3/087; H02J7/02
Foreign References:
| CN105634092A | 2016-06-01 | |||
| CN106849000A | 2017-06-13 | |||
| CN206595696U | 2017-10-27 | |||
| CN105375754A | 2016-03-02 | |||
| CN201766400U | 2011-03-16 | |||
| US20110163604A1 | 2011-07-07 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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