US 11,811,326 B2
Reducing transients for multiphase power regulators
Naman Bafna, Madhya Pradesh (IN); Cheng Wei Chen, Manchester, NH (US); Preetam Charan Anand Tadeparthy, Bangalore (IN); Sreelakshmi Suresh, Bangalore (IN); and Ammineni Balaji, Andhra Pradesh (IN)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Feb. 28, 2022, as Appl. No. 17/682,747.
Claims priority of provisional application 63/270,511, filed on Oct. 21, 2021.
Prior Publication US 2023/0130783 A1, Apr. 27, 2023
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01); H02M 3/156 (2006.01)
CPC H02M 3/1586 (2021.05) [H02M 1/0003 (2021.05); H02M 3/1584 (2013.01); H02M 3/1566 (2021.05)] 23 Claims
OG exemplary drawing
 
1. A circuit comprising:
a loop controller having current phase inputs, a feedback input, a control loop output and a transient event output, the feedback input adapted to be coupled to an output terminal of a multi-phase power stage;
a pulse width modulation (PWM) circuit having a blanking input, a control input and a PWM output, the control input coupled to the control loop output; and
a phase management circuit having a transient detect input, a PWM input, a blanking output and phase outputs, the transient detect input coupled to the transient event output, the PWM input coupled to the PWM output, the blanking output coupled to the blanking input, and each of the phase outputs adapted to be coupled to a respective phase of the multi-phase power stage, the phase management circuit configured to provide a blanking control signal at the blanking output representative of a variable blanking time.