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1. (WO2018221031) SWITCHING POWER SUPPLY DEVICE

Pub. No.:    WO/2018/221031    International Application No.:    PCT/JP2018/015328
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri Apr 13 01:59:59 CEST 2018
IPC: H02M 3/155
H02M 3/28
Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD.
日立オートモティブシステムズ株式会社
Inventors: TAKAHASHI Naoya
高橋 直也
KUBO Kenji
久保 謙二
ONO Takuma
小野 琢磨
Title: SWITCHING POWER SUPPLY DEVICE
Abstract:
Provided is a switching power supply device in which the resolution of voltage control is high. The switching power supply device according to the present invention comprises a power conversion circuit configured to include a switching element, and a control circuit part that outputs a drive pulse to the switching element on the basis of an output voltage command value and an output voltage value of the power conversion circuit, the control circuit part changing a switching cycle on the basis of the difference between a calculation value of an operation amount based on the output voltage command value and the output voltage value, and a set value of the operation amount, and outputting the drive pulse.