CONTROL METHOD AND CONTROL DEVICE FOR POWER ADAPTER

Title:

CONTROL METHOD AND CONTROL DEVICE FOR POWER ADAPTER

Document Type and Number:

WIPO Patent Application WO/2017/202315

Kind Code:

A1

Abstract:

Disclosed in embodiments of the present invention are a control method and a control device for a power adapter, which relate to the technical field of computers and resolve the problem of failure to reduce interference of common mode noise to a TP due to failure to find a clean working frequency point when the common mode noise is great in the whole working frequency band of the TP, and avoid the occurrence of the phenomenon of failure of the TP to make a response when a user continuously performs slide operations on the TP. A specific solution comprises: obtaining a scanning frequency of a TP, and the strength of common mode noise generated by a power adapter under the scanning frequency of the TP; determining whether the strength of the common mode noise is greater than or equal to a preset threshold; and when the strength of the common mode noise is greater than or equal to the preset threshold, adjusting a working frequency of a control IC of the power adapter, so that the strength of common mode noise newly generated by the power adapter under the scanning frequency of the TP is less than the preset threshold. The embodiments of the present invention are used in a process of reducing interference of common mode noise to a TP.

Inventors:

ZOU JIE (CN)
ZHANG LIANMING (CN)
WANG WENFENG (CN)

Application Number:

PCT/CN2017/085584

Publication Date:

November 30, 2017

Filing Date:

May 23, 2017

Export Citation:

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Assignee:

HUAWEI TECH CO LTD (CN)

International Classes:

H02J7/04

Foreign References:

CN104662765A	2015-05-27
CN105528117A	2016-04-27
CN103001301A	2013-03-27
CN105045426A	2015-11-11
CN102968230A	2013-03-13

Other References: