US 12,231,045 B2
Switching converter control loop and dynamic reference voltage adjustment
Bikash Kumar Pradhan, Bengaluru (IN); Preetam Charan Anand Tadeparthy, Bengaluru (IN); Muthusubramanian Venkateswaran, Bengaluru (IN); Venkatesh Wadeyar, Bengaluru (IN); and Siddaram Mathapathi, Bengaluru (IN)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Dec. 14, 2023, as Appl. No. 18/539,346.
Application 18/539,346 is a division of application No. 17/200,564, filed on Mar. 12, 2021, granted, now 11,881,774.
Prior Publication US 2024/0113623 A1, Apr. 4, 2024
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/158 (2013.01) [H02M 1/00 (2013.01); H02M 1/0045 (2021.05)] 10 Claims
OG exemplary drawing
 
1. A switching converter comprising:
a power stage; and
a switching converter controller adapted to be coupled to the power stage, wherein the switching converter controller includes:
a pulse-width modulation (PWM) circuit;
a control loop coupled to the PWM circuit; and
a reference voltage controller coupled to the control loop, wherein the reference voltage controller is configured to:
determine a dynamic output voltage error of the power stage due to the control loop;
adjust a control loop reference voltage provided to the control loop responsive to the determined dynamic output voltage error;
estimate an aging drift error that accounts for aging drift of at least one control loop component; and
determine the dynamic output voltage error responsive to the estimated aging drift error;
wherein the control loop is configured to provide a control signal to the PWM circuit responsive to the adjusted control loop reference voltage.