Meeting Standby Energy Requirements in Motor Drive Applications

Abstract:
Electronic devices and appliances consume electricity when plugged, even when not in use. This power draw is termed standby power consumption and represents a significant percentage of total energy consumed. In motor drive applications, conventional methods are used to reduce the standby power drawn, including the use of mechanical or solid-state relays. This paper proposes the use of integrated half-bridge modules that integrate the auxiliary supply circuit, as well as a feature to reduce standby power consumption when the device is not in use. This method reduces total part count while drastically reducing standby power consumption to 10 mW for all three half-bridge modules.