公开(公告)号：US20250070678A1

公开(公告)日：2025-02-27

申请号：US18944353

申请日：2024-11-12

Applicant: DENSO CORPORATION

Inventor： Atsuki ASANO ,  Yoshinori HAYASHI

IPC: H02M3/335

Abstract: An isolated power supply device includes a plurality of transformers having input windings and cores. The input windings are connected to a DC power supply. Output sides of the transformers are connected to power feeding targets. At least two of the transformers have control windings. The isolated power supply device includes a control switch, control wirings, and a common wiring. First terminals of the control windings are connected to the ground. Second terminals of the control windings are connected to first terminals of the corresponding control wirings. Second terminals of the control wirings are connected to the common wiring. The isolated power supply device further includes a control unit that turns on and off the control switch based on a voltage value of the common wiring.

公开(公告)号：US20240429825A1

公开(公告)日：2024-12-26

申请号：US18822907

申请日：2024-09-03

Applicant: DENSO CORPORATION

Inventor： Takeshi HIRANO ,  Hitoshi OZAKI ,  Akira TOKUMASU ,  Atsuki ASANO

IPC: H02M3/335

Abstract: An isolated power supply apparatus includes transformers, input sides of which are connected with a DC power source and output sides of which are connected with power supply targets corresponding to the transformers. At least two of the transformers have respective feedback windings. The apparatus further includes: a control switch configured to allow supply of electric power from the DC power source to the input sides of the transformers by being turned on and interrupt the supply of electric power from the DC power source to the input sides of the transformers by being turned off; an acquisition unit configured to acquire a control value based on voltages generated in the feedback windings; and a control unit configured to turn on and off the control switch so as to feedback-control the control value to a target value and thereby control voltages on the output sides of the transformers.