US 12,149,158 B2
Power system having multi-trigger all-phase activation
Margaret Spillane, Spillane (IE); Kieran Burke, Quin (IE); and Gary Dillon, Kilkishen (IE)
Assigned to SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Scottsdale, AZ (US)
Filed by SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US)
Filed on Oct. 11, 2022, as Appl. No. 18/045,630.
Prior Publication US 2024/0120823 A1, Apr. 11, 2024
Int. Cl. H02M 1/32 (2007.01); H02M 1/00 (2006.01); H02M 1/36 (2007.01)
CPC H02M 1/0032 (2021.05) [H02M 1/0009 (2021.05); H02M 1/32 (2013.01); H02M 1/36 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power system comprising:
a plurality of phases configured by a plurality of pulse width modulation (PWM) signals to output a total current at a regulated voltage to a load; and
a controller configured to output the plurality of PWM signals to the plurality of phases, the controller including:
a phase state control module configured determine a level of a monitored current corresponding to the total current and to select an active state from a plurality of states based on the level of the monitored current;
a current limit detection circuit configured to assert a current-limit-detection signal while a current signal corresponding to a current feedback loop satisfies a current-transient condition that is based on a number of active phases in the active state of the power system; and
a transient detection circuit configured to assert a transient-detection signal while a voltage signal from a voltage feedback loop satisfies a voltage-transient condition, wherein the phase state control module is further configured to change the active state of the power system to an all-phase state while either the current-limit-detection signal or the transient-detection signal is asserted.