diodes.com

Announcement

New Product

The AP3927D is a universal AC, high-

voltage input, non-isolated, offline switcher

specially designed for applications with a

maximum of 360mA of output current or up

to 6W of output power.

The device provides a simple power supply

solution for smart home appliances, home

automation, industrial control, and IoT power

applications.

Supporting both non-isolated buck or offline

flyback topology solutions, the product has

several differentiating advantages:

•

Low standby power

•

High light-load efficiency

•

Cost-saving BOM

•

Rich protection functions to ensure

reliable operation

The AP3927D is available in the SO-7

(Type B) package that supports HV

creepage requirements.

Low Standby Power, High-Voltage, Non-Isolated Buck Power

Switcher for Appliances and IoT

AP3927D

Applications

Non-Isolated Standby and Auxiliary power rails in

▪ Smart home appliances

▪ Industrial controls

▪ Home automation

▪ IoT power

January 2025

The Diodes logo is a registered trademark of

Diodes Incorporated in the United States and

other countries.

All other trademarks are the property of their

respective owners.

© 2025 Copyright Diodes Incorporated. All Rights

Reserved.

The DIODES Advantage

This high-voltage, non-isolated buck power switcher

provides a reliable solution for appliances and IoT devices.

▪ Low System BOM Cost

Non-isolated buck configuration removes expensive

components

▪ Low Standby Power (<20mW)

Meets latest standby power requirements

▪ High Light-Load Efficiency

Caters to IoT devices and other equipment that spend large

periods of time sleeping

▪ Rich Protection Features: Overtemperature, Over-Load,

and Short-Circuit Protection

Ensures robust and reliable operation

▪ Industry-Standard Footprint-Compatible SO-7 Switcher

Provides a cost-effective alternative to existing non-isolated

buck solutions