US 12,218,574 B2
Adaptive spread-spectrum modulation for DC/DC converters
Raul Blecic, Freising (DE); Giacomo Calabrese, Freising (DE); Sooping Saw, McKinney, TX (US); and Premsagar Kittur, Richardson, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Jul. 29, 2022, as Appl. No. 17/877,067.
Prior Publication US 2024/0039385 A1, Feb. 1, 2024
Int. Cl. H02M 1/00 (2007.01); H02M 3/24 (2006.01)
CPC H02M 1/0035 (2021.05) [H02M 3/24 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a control circuit having a control output, the control circuit including:
a reference generation circuit having a reference output and a selection input;
a comparator having a first input, a second input, and an output, the first input coupled to the reference output, and the output of the comparator coupled to the selection input; and
a voltage buffer having an input and an output, the input coupled to the second input of the comparator, and the output of the voltage buffer coupled to the control output; and
a control signal generation circuit having a control input and an output, the control input coupled to the control output, the control signal generation circuit configured to receive a first control signal at the control input, provide a second control signal at the output, and adjust a frequency of the second control signal responsive to the first control signal.