TIDT194 August 2020 – MONTH
This reference design implements the LM74610-Q1 Zero-IQ Reverse-Polarity Protection Smart Diode Controller to control the high-side rectifier MOSFETs for both line and neutral inputs of a 12-VAC to 28-VAC power supply. The design was tested at loads from 7.5-W to 25-W. The use of low RDS(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-VAC transformer of a home or building.