US 11,671,003 B2
Multi-phase control circuit, multi-phase power system and temperature balance control method thereof
Li-Qiang Hu, Shanghai (CN); and Shun-Gen Sun, Shanghai (CN)
Assigned to SHANGHAI BRIGHT POWER SEMICONDUCTOR CO., LTD., Shanghai (CN)
Filed by Shanghai Bright Power Semiconductor Co., Ltd., Shanghai (CN)
Filed on Nov. 8, 2021, as Appl. No. 17/521,075.
Claims priority of application No. 202011239342.0 (CN), filed on Nov. 9, 2020.
Prior Publication US 2022/0149718 A1, May 12, 2022
Int. Cl. H02M 1/32 (2007.01); G05F 1/567 (2006.01); H02M 3/158 (2006.01); H02M 3/04 (2006.01)
CPC H02M 1/327 (2021.05) [H02M 3/04 (2013.01); G05F 1/567 (2013.01); H02M 3/1584 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A multi-phase control circuit, configured to control a plurality of power stages operating in different phases, comprising:
a plurality of control modules for controlling the plurality of power stages;
wherein at least one of the control modules acquires a first temperature signal indicating a representative temperature among the plurality of power stages and a second temperature signal indicating a respective temperature thereof; and
wherein the at least one of the control modules adjusts a pulse width and/or frequency of a pulse width modulation signal of the power stage according to a comparison result between the first temperature signal and the second temperature signal so as to balance the temperatures of the plurality of power stages.