Circuit/System Description

The hybrid/EV powertrain control module 2 monitors the AC voltage sensor inside the battery charger. The signal is pulse-width modulated and the duty cycle increases as the AC voltage increases. The duty cycle equals 10% when the AC voltage sensor reports less than 60 V. The duty cycle equals 90% when the AC voltage sensor reports more than 280 V. Therefore, during normal operation the duty cycle is between 10% and 90%.