US 12,283,876 B2
Power converter with integrated multi-phase reconfigurable current balancing
Tim Wen Hui Yu, Fremont, CA (US); and Gregory Szczeszynski, Nashua, NH (US)
Assigned to pSemi Corporation, San Diego, CA (US)
Filed by pSemi Corporation, San Diego, CA (US)
Filed on Feb. 24, 2022, as Appl. No. 17/679,572.
Prior Publication US 2023/0268836 A1, Aug. 24, 2023
Int. Cl. H02M 1/00 (2007.01); H02M 3/158 (2006.01)
CPC H02M 1/0009 (2021.05) [H02M 3/1584 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A power converter including:
(a) a plurality of power stages each configured to output a current in response to control signals; and
(b) a plurality of current sensing circuits, each coupled to a respective power stage and each including:
(1) a current-to-voltage circuit configured to provide a first voltage at an output node, the first voltage being proportional to an output current of the power converter;
(2) a low-pass low-frequency filter having an input connected to the output node of the current-to-voltage circuit and an output configured to provide a filtered second voltage from the first voltage as a first control signal for the respective power stage; and
(3) a low-pass high-frequency filter having an input connected to the output node of the current-to-voltage circuit and an output configured to provide a filtered third voltage from the first voltage as a second control signal for the respective power stage;
wherein the outputs of the low-pass low-frequency filters of the plurality of current sensing circuits are coupled in common.