Title:
CURRENT LIMITING CIRCUIT, CURRENT LIMITING METHOD, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/050730
Kind Code:
A1
Abstract:
Disclosed in the present application are a current limiting circuit, a current limiting method, and an electronic device. The circuit comprises: an input end for connecting to a power supply source; an output end for connecting to a load; a first switch connected between a current sensing unit and a freewheeling unit; the freewheeling unit connected between the output end and the first switch; and the current sensing unit connected between the input end and the first switch, so as to detect a supplied current supplied to the load by the power supply source. When the current sensing unit detects that the supplied current does not exceed a current sensing threshold value, the current sensing unit controls the first switch to be in a turned-on state, such that the power supply source supplies power to the load, and charges the freewheeling unit; otherwise, the current sensing unit controls the first switch to be in a turned-off state, such that the power supply source stops supplying power to the load, and the freewheeling unit supplies power to the load. In this way, the present application can perform rapid over-current protection on a power circuit, automatically reduce the power of a load and prevent the load from being powered off, and can also prevent the interruption of power supply to the load due an abnormal power source.
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Inventors:
LIU SHENGHUI (CN)
PAN QIHUI (CN)
XIAO XIANGMIN (CN)
FAN HUBING (CN)
LV LIANGFEI (CN)
QIN ZHIHUA (CN)
XIE SHAOWEI (CN)
PAN QIHUI (CN)
XIAO XIANGMIN (CN)
FAN HUBING (CN)
LV LIANGFEI (CN)
QIN ZHIHUA (CN)
XIE SHAOWEI (CN)
Application Number:
PCT/CN2022/117634
Publication Date:
March 14, 2024
Filing Date:
September 07, 2022
Export Citation:
Assignee:
HYTERA COMM CORP LTD (CN)
International Classes:
H02H9/02
Foreign References:
| JP2002153047A | 2002-05-24 | |||
| CN104331141A | 2015-02-04 | |||
| CN215772521U | 2022-02-08 | |||
| JPH10336886A | 1998-12-18 | |||
| US20090066304A1 | 2009-03-12 | |||
| US20150146328A1 | 2015-05-28 | |||
| CN107069688A | 2017-08-18 |
Attorney, Agent or Firm:
CHINA WISPRO INTELLECTUAL PROPERTY LLP. (CN)
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