US 12,424,932 B2
High power factor rectifier circuit and power converter
Ken Chin, Shenzhen (CN); Yuanjun Liu, Shenzhen (CN); Zhixiang Hu, Dongguan (CN); and Wei Zhang, Shenzhen (CN)
Assigned to HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Feb. 23, 2023, as Appl. No. 18/173,416.
Application 18/173,416 is a continuation of application No. PCT/CN2020/110762, filed on Aug. 24, 2020.
Prior Publication US 2023/0198383 A1, Jun. 22, 2023
Int. Cl. H02M 1/42 (2007.01); H02M 1/00 (2006.01); H02M 1/44 (2007.01)
CPC H02M 1/4233 (2013.01) [H02M 1/0009 (2021.05); H02M 1/44 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rectifier circuit, comprising:
a first reference ground;
a second reference ground;
a filter comprising:
a first diode having a positive electrode and a negative electrode;
a first capacitor having a first capacitor end connected to the first reference ground and a second capacitor end; and
a second capacitor having a third capacitor end connected to the second reference ground and a fourth capacitor end;
a totem pole power factor correction (PFC) circuit comprising:
a first parallel connection point connected to the first reference ground;
a second parallel connection point;
a first bridge arm unit; and
a second bridge arm unit connected in parallel with the first bridge arm unit between the first parallel connection point and the second parallel connection point;
a PFC controller comprising:
a PFC controller grounding terminal connected to the first reference ground;
a sampling voltage input terminal; and
a power input terminal connected to the negative electrode and connected to the second capacitor end;
a sampling resistor comprising:
a first resistor end connected to the first parallel connection point; and
a second resistor end separately connected to the sampling voltage input terminal and the second reference ground, wherein the PFC controller is configured to control the totem pole PFC circuit based on a sampling current flowing through the sampling resistor; and
a power supply configured to supply power to the PFC controller and comprising:
a power output terminal connected to the positive electrode, the fourth capacitor end, and the power input terminal using the filter; and
a power supply grounding terminal connected to the second reference ground.