公开(公告)号：US20230114063A1

公开(公告)日：2023-04-13

申请号：US17911023

申请日：2020-12-28

Applicant: Hitachi Astemo, Ltd.

Inventor： Mitsuhiro IWASAKI ,  Masahiro DOI ,  Takeo YAMASHITA ,  Hitomi AOYAMA ,  Shinichirou HIDA

IPC: H02M1/32 ,  H02M7/48 ,  H02M1/08 ,  H03K19/173 ,  H02P27/06 ,  H02P29/024

Abstract: An electronic control device for power conversion having an integrated safety function and improved reliability includes: a power module for converting DC power into AC power and supply the AC power to a motor; a gate driver for controlling the power module; a microcontroller for controlling the gate driver: a power supply IC for supplying power to at least one of the gate driver and the microcontroller: a discharge circuit for discharging a high voltage supplied to the power module; and a sensor. The power supply IC includes a microcomputer abnormality detection circuit for detecting an abnormality of the microcontroller and a safety processing circuit for determining necessity of safety processing based on an output of at least one of the microcomputer abnormality detection circuit and the sensor and performs the safety processing. The safety processing circuit stops the motor or discharges a high voltage using the discharge circuit.