Title:
METHOD AND A DEVICE FOR SUPPRESSING MAGNETIC BIAS
Document Type and Number:
WIPO Patent Application WO/2019/128835
Kind Code:
A1
Abstract:
The embodiment of the present application discloses a method and a device for suppressing magnetic bias. The method comprises: obtaining a bus voltage U1 during positive excitation of a transformer in a DC-DC converter and a bus voltage U2 during negative excitation; according to the bus voltage U1 during positive excitation and the bus voltage U2 during negative excitation, determining a bias compensation amount Δd1 when the transformer is positively excited and a bias compensation amount Δd2 when the transformer is negatively excited; superimposing the bias compensation amount Δd1 when the transformer is positively excited with a DC-DC converter loop output duty cycle signal amount, and outputting the same to a positive excitation transistor, and superimposing the bias compensation amount Δd2 when the transformer is negatively excited with a DC-DC converter loop output duty cycle signal amount, and outputting the same to a negative excitation transistor.
Inventors:
HU YONGHUI (CN)
MENG QINGYUAN (CN)
LU ZHIFENG (CN)
WANG JUNJIE (CN)
MENG QINGYUAN (CN)
LU ZHIFENG (CN)
WANG JUNJIE (CN)
Application Number:
PCT/CN2018/122304
Publication Date:
July 04, 2019
Filing Date:
December 20, 2018
Export Citation:
Assignee:
ZTE CORP (CN)
International Classes:
H02M3/335
Foreign References:
| JP4352299B2 | 2009-10-28 | |||
| JP5861814B2 | 2016-02-16 | |||
| CN106787762A | 2017-05-31 | |||
| CN103856062A | 2014-06-11 | |||
| JP5696898B2 | 2015-04-08 | |||
| CN201711447998A | 2017-12-27 |
Other References:
See also references of EP 3734823A4
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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