Title:
ELECTRONIC DEVICE AND REVERSE CHARGING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/082731
Kind Code:
A1
Abstract:
Provided are an electronic device and a reverse charging method. The electronic device may be a terminal device that supports a reverse charging function. A pull-up circuit is integrated on the electronic device provided in the embodiments of the present application, such that the electronic device can provide a first voltage to a DM pin of a USB interface after accessing a master device end of a USB OTG line, so that a slave device can identify a USB interface of the electronic device as a CDP. Therefore, the electronic device provided in the embodiments of the present application can provide a relatively large charging current for the slave device on the basis of a CDP protocol.
Inventors:
LI CHENGYA (CN)
MA PENGFEI (CN)
LI ZHONGMING (CN)
MA PENGFEI (CN)
LI ZHONGMING (CN)
Application Number:
PCT/CN2020/113319
Publication Date:
May 06, 2021
Filing Date:
September 03, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02J7/00
Foreign References:
| CN110829523A | 2020-02-21 | |||
| CN211239378U | 2020-08-11 | |||
| CN106655316A | 2017-05-10 | |||
| CN106300533A | 2017-01-04 | |||
| CN101888185A | 2010-11-17 | |||
| CN108631401A | 2018-10-09 | |||
| US20160087474A1 | 2016-03-24 |
Other References:
WANG, CHUANBEI ET AL., UNDERSTANDING USB SYSTEMS DEVELOPMENT BASED ON ARM CORTEX-M3, 31 August 2012 (2012-08-31), XP009527872
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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