Booster and motor controller

摘要

A voltage sensor ( 101 ) is connected to output terminals (P, N) of a booster. The voltage sensor ( 101 ) detects a boosted voltage, and outputs the detected voltage to a first drive controller ( 102 ). The first drive controller ( 102 ) outputs a control signal to a variable resistor ( 22 ) indicating a gate resistance obtained on the basis of the boosted voltage. The variable resistor ( 22 ) is controlled to have the specified gate resistance in response to the received control signal.