Title:
POWER SUPPLY DEVICE, AND CURRENT EQUALIZATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/080303
Kind Code:
A1
Abstract:
A power supply device, and a current equalization method therefor. The power supply device comprises: multiple power supply modules (1) connected in parallel, and multiple current equalization modules (2), wherein two adjacent power supply modules (1) correspond to one current equalization module (2); each power supply module (1) comprises a voltage output unit (11), a power stage unit (12), and a control unit (13); each current equalization module (2) comprises a first current sampling conversion unit (21), a second current sampling conversion unit (22), and an error comparison unit (23); and the difference in the current magnitude of an output load (3) of each of the two adjacent power supply modules (1) can be compared by means of the error comparison unit (23), a corresponding first control voltage (Vc) is generated according to the difference in the current magnitude of the output load (3) of each of the two adjacent power supply modules (1), and the control unit (13) generates a second control voltage (Vc') according to the first control voltage (Vc) so as to control the power stage unit (12) so same changes an output voltage (Vout) of the voltage output unit (11). The present invention can accurately achieve current equalization of each of the power supply modules (1) connected in parallel, and simplifies the complexity of a power supply device.
Inventors:
CHANG BOBIAO (CN)
Application Number:
PCT/CN2017/116269
Publication Date:
May 02, 2019
Filing Date:
December 14, 2017
Export Citation:
Assignee:
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD (CN)
International Classes:
G05F1/56
Foreign References:
| CN103248231A | 2013-08-14 | |||
| CN101521454A | 2009-09-02 | |||
| CN102324852A | 2012-01-18 | |||
| EP3091662A1 | 2016-11-09 | |||
| CN103346673A | 2013-10-09 | |||
| CN104980024A | 2015-10-14 |
Other References:
See also references of EP 3702877A4
Attorney, Agent or Firm:
COMIPS INTELLECTUAL PROPERTY OFFICE (CN)
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