US 12,113,446 B2
Control circuit, corresponding electronic converter device and method of operating thereof
Francesco Ferrazza, Milan (IT); Mirko Gravati, Milan (IT); and Christian Leone Santoro, San Giuliano Milanese (IT)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on Mar. 18, 2022, as Appl. No. 17/698,786.
Claims priority of application No. 102021000007628 (IT), filed on Mar. 29, 2021.
Prior Publication US 2022/0311341 A1, Sep. 29, 2022
Int. Cl. H02M 3/335 (2006.01); H02M 1/08 (2006.01); H02M 1/32 (2007.01)
CPC H02M 3/335 (2013.01) [H02M 1/08 (2013.01); H02M 1/32 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control circuit for controlling a switching stage of an electronic converter configured to receive an input voltage at input terminals of the electronic converter and to provide an output voltage at output terminals of the electronic converter, the switching stage including an inductance, the control circuit comprising:
a first terminal configured to provide a drive signal to an electronic switch of said switching stage;
a second terminal configured to receive from a feedback circuit a first feedback signal proportional to said output voltage;
a third terminal configured to receive from a current sensor a second feedback signal proportional to a current flow in an inductance of said switching stage;
a driver circuit configured to provide said drive signal as a function of a Pulse-Width Modulation (PWM) signal; and
a PWM signal generator circuit configured to generate said PWM signal as a function of said first feedback signal, a reference threshold and said second feedback signal or a slope compensation signal,
wherein the control circuit includes processing circuitry configured to:
sense an input sensing signal in response to said input voltage being received at said input terminals; and
provide a first compensation parameter and provide a first compensating signal as a function of said input sensing signal elevated to a power equal to an incremented first compensation parameter.