Title:
POWER SUPPLY CIRCUIT, POWER SUPPLY DEVICE, AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2019/056319
Kind Code:
A1
Abstract:
A power supply circuit, a power supply device, and a control method. The power supply circuit comprises a primary unit (11), a modulation unit (12), a transformer (13), a secondary rectification and filtering unit (14), a voltage feedback unit (16), and a control unit (15). The control unit in the power supply circuit can communicate with a device to be charged, so as to adjust an output voltage and/or an output current of the power supply circuit, so that the output voltage and/or the output current match a charging stage where a battery in the device to be charged is located. The power supply circuit can flexibly control the output voltage thereof to fall within a first voltage range or a second voltage range.
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Inventors:
TIAN CHEN (CN)
ZHANG JIALIANG (CN)
ZHANG JIALIANG (CN)
Application Number:
PCT/CN2017/103009
Publication Date:
March 28, 2019
Filing Date:
September 22, 2017
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H02J7/00
Foreign References:
| CN104135043A | 2014-11-05 | |||
| CN107124012A | 2017-09-01 | |||
| CN106207291A | 2016-12-07 | |||
| US6295217B1 | 2001-09-25 |
Other References:
See also references of EP 3540898A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC. (CN)
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