公开(公告)号：US20190393787A1

公开(公告)日：2019-12-26

申请号：US16561826

申请日：2019-09-05

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Masayuki IDA

IPC: H02M3/158 ,  H03K17/082 ,  H01M10/48 ,  G01R19/00

Abstract: An object of the present invention is to provide a power supply voltage stabilizing method that can suppress the performance of switching power supply from being deteriorated even when a battery voltage varies and/or load conditions change. In a power supply voltage stabilizing method of a switching power supply including an output power MOS to which a battery voltage is supplied and a PWM feedback control unit that controls the output power MOS, the PWM feedback control unit includes a voltage feedback controller that controls on the basis of a power supply voltage output from the switching power supply and a current feedback controller that controls on the basis of a current output from the switching power supply. A variation in the battery voltage and/or a change in the load condition of the switching power supply are/is detected, and the bandwidth of the PWM feedback control unit is dynamically changed in accordance with the result of the detection.

公开(公告)号：US20210249958A1

公开(公告)日：2021-08-12

申请号：US17138881

申请日：2020-12-30

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Masayuki IDA ,  Yasuhiko KOKAMI ,  Hideyuki TAJIMA ,  Hiroyuki INOUE ,  Noboru INOMATA

IPC: H02M3/158 ,  G05F1/46 ,  H03K19/20 ,  H03K17/687 ,  H02M1/00

Abstract: A DC-DC converter includes a high-side switch coupled between a first power supply and an output terminal, a low-side switch coupled between a second power supply and the output terminal, an inductor coupled to the output terminal, and a reverse current monitoring circuit that determines that a reverse current from the inductor to the output terminal occurs when the output terminal becomes a high voltage during a state in which the high-side switch and the low-side switch are in a dead time.

公开(公告)号：US20190199219A1

公开(公告)日：2019-06-27

申请号：US16178268

申请日：2018-11-01

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Masayuki IDA

IPC: H02M3/158 ,  H01M10/48 ,  G01R19/00 ,  H03K17/082

CPC classification number: H02M3/1588 ,  G01R19/0092 ,  H01M10/48 ,  H02J7/0052 ,  H02J2007/0059 ,  H02M3/156 ,  H02M3/158 ,  H03K17/0822

Abstract: An object of the present invention is to provide a power supply voltage stabilizing method that can suppress the performance of a switching power supply from being deteriorated even when a battery voltage varies and/or load conditions change. In a power supply voltage stabilizing method of a switching power supply including an output power MOS to which a battery voltage is supplied and a PWM feedback control unit that controls the output power MOS, the PWM feedback control unit includes a voltage feedback controller that controls on the basis of a power supply voltage output from the switching power supply and a current feedback controller that controls on the basis of a current output from the switching power supply. A variation in the battery voltage and/or a change in the load condition of the switching power supply are/is detected, and the bandwidth of the PWM feedback control unit is dynamically changed in accordance with the result of the detection.