公开(公告)号：US20250015708A1

公开(公告)日：2025-01-09

申请号：US18218750

申请日：2023-07-06

Applicant: STMicroelectronics S.r.l. ,  Politecnico Di Milano

Inventor： Lorenzo CREMONESI ,  Paolo MELILLO ,  Alessandro GASPARINI ,  Massimo GHIONI ,  Salvatore LEVANTINO

IPC: H02M1/088 ,  H02M3/158

Abstract: Disclosed herein is a DC-DC converter, including a high-side power switch coupled between an input voltage and a switched node and a low-side power switch coupled between the switched node and ground. An inductor is coupled between the switched node and an output node. An output capacitor is coupled between the output node and ground. A control circuit is configured to operate the high-side power switch in a constant charge mode of operation to vary on-time of the high-side power switch to maintain a constant amount of charge being transferred to the output capacitor during each charging cycle, independent of variation of the input voltage.