US 12,235,664 B2
Control circuit with energy regulation for voltage regulators and control method thereof
Wangmiao Hu, Hangzhou (CN); Fangyu Zhang, Hangzhou (CN); Lijie Jiang, Hangzhou (CN); Chao Liu, Sunnyvale, CA (US); Chiahsin Chang, Sammamish, WA (US); and Jinghai Zhou, Saratoga, CA (US)
Assigned to Chengdu Monolithic Power Systems Co., Ltd., Chengdu (CN)
Filed by Chengdu Monolithic Power Systems Co., Ltd., Chengdu (CN)
Filed on Feb. 17, 2023, as Appl. No. 18/170,757.
Claims priority of application No. 202210219329.1 (CN), filed on Mar. 8, 2022.
Prior Publication US 2023/0205240 A1, Jun. 29, 2023
Int. Cl. G05F 1/46 (2006.01); G05F 1/567 (2006.01); H02M 3/156 (2006.01)
CPC G05F 1/468 (2013.01) [G05F 1/567 (2013.01); H02M 3/156 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control circuit for a voltage regulator, wherein the voltage regulator has a plurality of switches and is configured to provide an output voltage and an output current, the control circuit comprising:
an energy regulation circuit, configured to provide an output energy based on the output voltage and the output current, and to provide a maximum energy reference based on an ambient temperature, and to provide a regulation signal based on the output energy and the maximum energy reference, wherein the maximum energy reference is configured to decrease with increasing of the ambient temperature and to increase with decreasing of the ambient temperature;
a voltage reference regulation circuit, configured to receive the regulation signal, and to provide an output voltage reference based on a target voltage and the regulation signal, wherein the output voltage reference varies with the regulation signal; and
a switching control signal generating circuit, configured to provide a switching control signal based on the output voltage reference and the output voltage to turn ON and turn OFF at least one switch of the plurality of switches of the voltage regulator.