US 12,334,805 B2
Voltage converter circuit
Min-Han Lee, New Taipei (TW)
Assigned to CHICONY POWER TECHNOLOGY CO., LTD., New Taipei (TW)
Filed by Chicony Power Technology Co., Ltd., New Taipei (TW)
Filed on Jan. 23, 2023, as Appl. No. 18/100,244.
Claims priority of application No. 111147500 (TW), filed on Dec. 9, 2022.
Prior Publication US 2024/0195309 A1, Jun. 13, 2024
Int. Cl. H02M 1/00 (2007.01); H02M 1/42 (2007.01); H02M 3/00 (2006.01); H02M 3/335 (2006.01)
CPC H02M 1/007 (2021.05) [H02M 3/01 (2021.05); H02M 1/0095 (2021.05); H02M 1/4208 (2013.01); H02M 3/33573 (2021.05)] 15 Claims
OG exemplary drawing
 
1. A voltage converter circuit, comprising:
a rectifier filter circuit, configured to receive an input voltage and rectify and filter the input voltage to generate a rectified and filtered voltage;
a power factor converter circuit, coupled to the rectifier filter circuit, having a first gain, and configured to convert the rectified and filtered voltage to a power factor voltage according to the first gain;
a full-half bridge resonance converter circuit, coupled to the power factor converter circuit, having a second gain, and configured to convert the power factor voltage to a supply voltage according to the second gain;
a voltage regulation control circuit, coupled to the power factor converter circuit and the full-half bridge resonance converter circuit and configured to generate a first voltage regulation signal, a second voltage regulation signal and a third voltage regulation signal according to an output voltage; and
a voltage feedback control circuit, coupled to the full-half bridge resonance converter circuit and the voltage regulation control circuit, wherein
the power factor converter circuit is configured to adjust the first gain according to the first voltage regulation signal, the full-half bridge resonance converter circuit is configured to operate in a full-bridge resonance mode, a half-bridge resonance mode, or a hybrid half-bridge resonance mode according to the second voltage regulation signal, and the voltage feedback control circuit is configured to control the full-half bridge resonance converter circuit to adjust the second gain according to the third voltage regulation signal.