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公开(公告)号：US11575319B2
公开(公告)日：2023-02-07
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 , H02M1/00 , H03K17/687 , H03K19/20
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.
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公开(公告)号：US10707762B2
公开(公告)日：2020-07-07
申请号：US16561826
申请日：2019-09-05
Applicant: RENESAS ELECTRONICS CORPORATION
Inventor： Masayuki Ida
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.
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公开(公告)号：US10447164B2
公开(公告)日：2019-10-15
申请号：US16178268
申请日：2018-11-01
Applicant: RENESAS ELECTRONICS CORPORATION
Inventor： Masayuki Ida
IPC: H02M3/158 , H03K17/082 , G01R19/00 , H01M10/48
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.
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公开(公告)号：US10749438B2
公开(公告)日：2020-08-18
申请号：US16561826
申请日：2019-09-05
Applicant: RENESAS ELECTRONICS CORPORATION
Inventor： Masayuki Ida
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.
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