Patent ID: 9654035
Date: 2017-05-16
CPC Classifications: H02M,H02P

Claim:
1. A motor controller for deployment in high temperature environments, comprising: a first half-bridge circuit comprising a first high-side switching element and a first low-side switching element; a second half-bridge circuit comprising a second high-side switching element and a second low-side switching element; a third half-bridge circuit comprising a third high-side switching element and a third; low-side switching element; wherein the controller is arranged to apply a pulse width modulation (PWM) scheme to switch the first half-bridge circuit, second half-bridge circuit, and third half-bridge circuit to power a motor; and wherein the controller is configured to detect a stall condition of the motor in response to a voltage feedback signal; and to stop commutation of the motor in response to detecting the stall condition; and a charge pump to provide a control voltage to the controller that is greater than a rated power supply voltage (VCC) for operation of the high-side switching element.