Title:
POWER SUPPLY CIRCUIT, POWER SUPPLY DEVICE, AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2019/056318
Kind Code:
A1
Abstract:
A power supply circuit (10), a power supply device, and a control method. The power supply circuit (10) comprises a primary rectification unit (11), a modulation unit (12), a transformer (13), a secondary rectification and filtering unit (14), a current feedback unit (15), and a current collection control unit (16). A liquid-state electrolytic capacitor on a primary side is removed in the power supply circuit (10), and a current value of an output current of the power supply circuit (10) is a periodically-changing current value. The power supply circuit (10) can determine when the output current is at a peak value according to a feedback voltage outputted by the current feedback unit (15), so that the power supply circuit (10) can manage and control the peak value of the output current.
Inventors:
TIAN CHEN (CN)
ZHANG JIALIANG (CN)
ZHANG JIALIANG (CN)
Application Number:
PCT/CN2017/103008
Publication Date:
March 28, 2019
Filing Date:
September 22, 2017
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H02M7/04
Foreign References:
| CN101860236A | 2010-10-13 | |||
| CN102185481A | 2011-09-14 | |||
| CN101125388A | 2008-02-20 | |||
| CN205232031U | 2016-05-11 | |||
| CN102710148A | 2012-10-03 |
Other References:
See also references of EP 3557746A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC. (CN)
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