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|1. (WO2018180425) POWER SUPPLY DEVICE FOR VEHICLE|
|Applicants:||AUTONETWORKS TECHNOLOGIES, LTD.
SUMITOMO WIRING SYSTEMS, LTD.
SUMITOMO ELECTRIC INDUSTRIES, LTD.
|Title:||POWER SUPPLY DEVICE FOR VEHICLE|
Provided is a power supply device for a vehicle. The power supply device can switch between performing non-synchronous rectification control and synchronous rectification control and can keep an output voltage value from deviating significantly from a target voltage value when switching from the non-synchronous rectification control to the synchronous rectification control. According to the present invention, when a determination unit (41) determines, during the execution of non-synchronous rectification control, that current is increasing, a drive unit (27): switches to synchronous rectification control under which a first switch unit (21A) is given a PWM signal that has a fixed duty; and then performs synchronous rectification control under which the first switch unit (21A) is given a PWM signal that has a duty that is calculated by a feedback computation unit (42) on the basis of a target output voltage value and detection results from a detection unit (35).