US 12,224,666 B2
Dc-dc converter control circuit
Shatabda Saha, Saxony (DE)
Assigned to GLOBALFOUNDRIES U.S. Inc., Malta, NY (US)
Filed by GLOBALFOUNDRIES U.S. Inc., Malta, NY (US)
Filed on May 19, 2022, as Appl. No. 17/748,772.
Prior Publication US 2023/0378871 A1, Nov. 23, 2023
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01); H02M 1/08 (2006.01); H02M 1/14 (2006.01)
CPC H02M 3/158 (2013.01) [H02M 1/0009 (2021.05); H02M 1/08 (2013.01); H02M 1/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A structure comprising:
a dynamic pulse width modulation (PWM) circuit which converts a sense voltage to a variable current in response to a load current being above a predetermined threshold, wherein the dynamic PWM circuit comprises a comparator that is enabled using an enable signal and the comparator outputs an enable variable current signal, the enable variable current signal and the converted sense voltage being utilized by a voltage-current converter to output the variable current; and
a ramp generator circuit which receives the variable current from the dynamic PWM circuit and dynamically adjusts a fixed base frequency of a PWM signal to a dynamic frequency of the PWM signal corresponding with the load current.