US 12,244,215 B2
Circuit, corresponding multi-phase converter device and method of operation
Alberto Cattani, Cislago (IT)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on Jun. 28, 2022, as Appl. No. 17/851,901.
Application 17/851,901 is a continuation of application No. 16/916,335, filed on Jun. 30, 2020, granted, now 11,404,952.
Claims priority of application No. 102019000010662 (IT), filed on Jul. 2, 2019.
Prior Publication US 2022/0329146 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01)
CPC H02M 1/0025 (2021.05) [H02M 3/1584 (2013.01); H02M 1/0032 (2021.05)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
comparing a control signal with a periodic ramp signal to generate pulses of a pulse width modulation signal;
during an activation period: applying a charging current to a capacitor and selectively connecting a ramp increasing voltage at the capacitor to generate said control signal;
when the activation period ends, selectively disconnecting the capacitor and selectively connecting a control voltage to generate said control signal; and
during a deactivation period: selectively disconnecting the control voltage, applying a discharging current to the capacitor and selectively connecting a ramp decreasing voltage at the capacitor to generate said control signal.