US 12,483,151 B2
Power supply device and charging control method
Senlong Jiang, Dongguan (CN); Jun Zhang, Dongguan (CN); Chen Tian, Dongguan (CN); Jialiang Zhang, Dongguan (CN); and Chih-wei Chiu, Dongguan (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Dongguan (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Dongguan (CN)
Filed on Sep. 12, 2022, as Appl. No. 17/942,306.
Application 17/942,306 is a continuation of application No. PCT/CN2021/078539, filed on Mar. 1, 2021.
Claims priority of application No. 202010172277.8 (CN), filed on Mar. 12, 2020.
Prior Publication US 2023/0006563 A1, Jan. 5, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01); H02M 3/156 (2006.01); H02M 7/219 (2006.01)
CPC H02M 3/33576 (2013.01) [H02M 1/008 (2021.05); H02M 3/156 (2013.01); H02M 7/219 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A power supply device, comprising:
a transformer comprising a primary winding, a first secondary winding, and a second secondary winding;
a first rectifier, connected to the primary winding of the transformer and configured to convert a received alternating-current voltage to a first direct-current voltage, wherein the transformer is configured to convert the first direct-current voltage to a second direct-current voltage provided by the first secondary winding and a third direct-current voltage provided by the second secondary winding;
a first voltage conversion module connected to the first secondary winding of the transformer;
a second voltage conversion module, connected to the second secondary winding of the transformer; wherein, alternatively, the second direct-current voltage is converted by the first voltage conversion module or the third direct-current voltage is converted by the second voltage conversion module, for outputting a fourth direct-current voltage; and
a control unit, connected to the first voltage conversion module and second voltage conversion module, and configured to control the first voltage conversion module or second voltage conversion module to adjust an output voltage or an output current of the power supply device.