Description

This reference design implements the LM74610-Q1 Zero-I_Q Reverse-Polarity Protection Smart Diode Controller to control the high-side rectifier MOSFETs for both line and neutral inputs of a 12-V_AC to 28-V_AC power supply. The design was tested at loads from 7.5-W to 25-W. The use of low R_DS(on) MOSFETs with ideal diode drivers eliminates the high losses found in standard diode rectifiers. Applications include video doorbells and smart thermostats that run off the 12-V or 24-V_AC transformer of a home or building.