US 12,132,413 B2
Control method for power supply converters, corresponding converter and device
Sebastiano Messina, Mascalucia (IT); and Marco Torrisi, Gravina di Catania (IT)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on Jun. 13, 2022, as Appl. No. 17/838,792.
Claims priority of application No. 102021000015665 (IT), filed on Jun. 15, 2021.
Prior Publication US 2022/0399829 A1, Dec. 15, 2022
Int. Cl. H02M 7/219 (2006.01)
CPC H02M 7/219 (2013.01) 29 Claims
OG exemplary drawing
 
1. A method, comprising:
converting an input signal applied across a first input node and a second input node of a converter circuit into an output signal across a first output node and a second output node of the converter circuit, wherein converting is performed by a switching network of the converter circuit arranged intermediate the first and second input nodes and the first and second output nodes, the switching network coupled to the first input node via an inductor having a current flowing therethrough;
activating a hysteresis current control mode of the switching network wherein the current flowing through the inductor varies between a first current threshold and a second current threshold with a triangular waveform having rising and falling edges alternating with a switching frequency; and
controlling said switching frequency by adjusting one or more of the first and second current thresholds to vary a distance between the first current threshold and the second current threshold;
wherein the input signal applied across the first input node and the second input node comprises an AC signal having a half period encompassing a plurality of alternations of rising and falling edges of said triangular waveform; and
wherein adjusting the one or more of the first and second current thresholds is applied over an entirety of the half period of the AC signal.