公开(公告)号：US11057028B2

公开(公告)日：2021-07-06

申请号：US16559118

申请日：2019-09-03

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro Bertolini ,  Alberto Cattani ,  Stefano Ramorini ,  Alessandro Gasparini

IPC: H03K3/017 ,  H03K5/04 ,  H03K7/08 ,  H03K5/156 ,  H02M3/158

Abstract: A DC-DC converter includes clock generation circuitry generating first and second clock signals that are out of phase, and a control signal generator generating a switching control signal at an edge of the second clock signal based upon a comparison of an error voltage to a summed voltage. Boost circuitry charges an energy storage component during an on-phase and discharges the energy storage component during an off-phase to thereby generate an output voltage. The on-phase and off-phase are set as a function of the switching control signal. Sum voltage generation circuitry generates a ramp voltage in response to an edge of the first clock signal and generates the summed voltage at an edge of the second clock signal. The sum voltage represents a sum of the ramp voltage and a voltage representative of the current flowing in the energy storage component during the on-phase.