Title:
POWER SUPPLY VOLTAGE STABILIZING METHOD, SEMICONDUCTOR DEVICE AND POWER SUPPLY SYSTEM
Document Type and Number:
Japanese Patent JP2019115100
Kind Code:
A
Abstract:
To provide a power supply voltage stabilizing method capable of suppressing reduction in performance of a switching power supply even in a case where a battery voltage is varied or/and a load condition is changed.SOLUTION: The present invention relates to a power supply voltage stabilizing method for a switching power supply 100 comprising an output power MOS 11 to which a battery voltage Vin is supplied, and a PWM feedback control part for controlling the output power MOS 11. The PWM feedback control part includes a voltage feedback controller 2 that performs control due to a power supply voltage Vout outputted from the switching power supply 100, and a current feedback controller 3 that performs control due to a current outputted from the switching power supply 100. The power supply voltage stabilizing method includes detecting a variance of the battery voltage Vin or/and a change of a load condition of the switching power supply 100, and dynamically changing a band of the PWM feedback control part in accordance with a result of the detection.SELECTED DRAWING: Figure 1
More Like This:
| JP2014204598 | ELECTRONIC CONTROL DEVICE |
| JP6099581 | Switching power supply unit |
| JP3659214 | METHOD FOR CONTROLLING CONVERTER |
Inventors:
IDA MASAYUKI
Application Number:
JP2017244907A
Publication Date:
July 11, 2019
Filing Date:
December 21, 2017
Export Citation:
Assignee:
RENESAS ELECTRONICS CORP
International Classes:
H02M3/155
Attorney, Agent or Firm:
Tsutsui International Patent Office