Title:
ANTI-REVERSE CHARGING CIRCUIT OF SMART BRACELET
Document Type and Number:
WIPO Patent Application WO/2018/196460
Kind Code:
A1
Abstract:
An anti-reverse charging circuit of a smart bracelet, comprising a single lithium battery charging management integrated chip (U1). A negative electrode charging input line of the charging circuit is connected in series to a capacitor (C2) and is then connected in parallel to a positive electrode charging input line; the positive electrode charging input line is connected to a power supply input pin (VIN) of the charging management integrated chip. An N-type Mental Oxide Semiconductor (NMOS) transistor (Q1) is provided between an input end of the negative electrode charging input line and the capacitor. A drain of the NMOS transistor is connected to the input end of the negative electrode charging input line; a control electrode of the NMOS transistor is connected to the positive electrode charging input line by means of a resistor (R5); a source of the NMOS transistor is connected to the capacitor, and a line between the source of the NMOS transistor and the capacitor is grounded.
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Inventors:
XUE LEI (CN)
Application Number:
PCT/CN2018/074887
Publication Date:
November 01, 2018
Filing Date:
February 01, 2018
Export Citation:
Assignee:
GUANGDONG APPSCOMM CO LTD (CN)
International Classes:
H02H11/00; H02J7/00
Foreign References:
| CN105262160A | 2016-01-20 | |||
| CN205810083U | 2016-12-14 | |||
| CN203326666U | 2013-12-04 | |||
| US20120126749A1 | 2012-05-24 | |||
| CN206117246U | 2017-04-19 | |||
| CN106911163A | 2017-06-30 |
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