US 12,451,801 B2
DC/DC converter, voltage gain switching method and system
Haitao Chen, Shenzhen (CN); Xingzhong Zhang, Dongguan (CN); and Zhengdong Jiang, Dongguan (CN)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Feb. 24, 2023, as Appl. No. 18/174,084.
Application 18/174,084 is a continuation of application No. PCT/CN2020/112908, filed on Sep. 1, 2020.
Prior Publication US 2023/0208287 A1, Jun. 29, 2023
Int. Cl. H02M 3/07 (2006.01); H02M 1/00 (2006.01); H02M 3/00 (2006.01); H02M 3/158 (2006.01)
CPC H02M 3/07 (2013.01) [H02M 1/0095 (2021.05); H02M 3/01 (2021.05); H02M 3/015 (2021.05); H02M 3/158 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A DC/DC converter comprising:
a first input/output terminal;
a second input/output terminal;
a first capacitor unit, wherein a first terminal of the first capacitor unit is connected to a ground terminal and a second terminal of the first capacitor unit is connected to the second input/output terminal;
a second capacitor unit, wherein the second terminal of the first capacitor unit is connected to a first terminal of the second capacitor unit;
a first resonance unit, wherein a first terminal the first resonance unit and a second terminal of the first resonance unit are respectively connected to the first terminal of the second capacitor unit and a second terminal of the second capacitor unit to form a first resonance circuit of the first resonance unit, and a third terminal and a fourth terminal of the first resonance unit are respectively connected to both terminals of the first capacitor unit to form a second resonance circuit of the first resonance unit; and
a second resonance unit, wherein a first terminal of the second resonance unit is connected to a second terminal of the second capacitor unit and a second terminal of the second resonance unit is connected to the first input/output terminal to form a first resonance circuit of the second resonance unit, and a third terminal of the second resonance unit is connected to the ground terminal, and a fourth terminal of the second resonance unit is connected to a first voltage gain changeover switch to form a second resonance circuit of the second resonance unit; and the first voltage gain changeover switch is configured to:
connect the fourth terminal of the second resonance unit to the second terminal of the first capacitor unit, or
connect the fourth terminal of the second resonance unit to the second terminal of the second capacitor unit.