US 12,074,523 B2
Power delivery control circuit
David Lidsky, Oakland, CA (US); Timothy Alan Phillips, Hope, RI (US); Parag Oak, Sunnyvale, CA (US); and Shrinivasan Jaganathan, Milpitas, CA (US)
Assigned to EMPOWER SEMICONDUCTOR, INC., San Jose, CA (US)
Filed by Empower Semiconductor, Inc., Milpitas, CA (US)
Filed on Jul. 22, 2022, as Appl. No. 17/814,399.
Application 17/814,399 is a continuation of application No. 16/714,686, filed on Dec. 13, 2019, granted, now 11,431,247.
Claims priority of provisional application 62/779,403, filed on Dec. 13, 2018.
Prior Publication US 2022/0360170 A1, Nov. 10, 2022
Int. Cl. H02M 3/155 (2006.01); H02M 3/158 (2006.01)
CPC H02M 3/1586 (2021.05) [H02M 3/155 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A circuit comprising:
a first power converter phase controlled by a control circuit to deliver a first predetermined quantity of charge to a power output terminal;
a second power converter phase controlled by the control circuit to deliver a second predetermined quantity of charge to the power output terminal;
a first inductor coupled directly between the first power converter phase and the power output terminal; and
a second inductor coupled directly between the second power converter phase and the power output terminal;
wherein the control circuit is arranged to generate a plurality of trigger signals to repeatedly trigger the first and second power converter phases;
wherein the control circuit is arranged to cause the trigger signals to have a variable frequency;
wherein the control circuit is arranged to control a time delay between the first power converter phase delivering the first predetermined quantity of charge and the second power converter phase delivering the second predetermined quantity of charge, and wherein the time delay is based on a difference between a voltage at the power output terminal and a reference voltage, and on the variable frequency; and
wherein the first predetermined quantity of charge and the second predetermined quantity of charge are substantially equal.