Low standby power and non-isolated offline switcher reduces BOM

Diodes Incorporated has released a universal AC high-voltage input non-isolated offline switcher IC to strengthen its power products portfolio. The AP3928 meets the challenges associated with employing a bias power supply. It provides safe and reliable power while simultaneously preserving high-performance figures and facilitating significant cost savings. This switcher IC is optimised for circumstances where higher power levels are mandated, including industrial control or home automation systems, home appliances, and IoT devices.

The device has a 600mA maximum output current, enabling for a 10W output power rating. A key differentiator of this high-voltage switcher IC is that it supports traditional offline non-isolated flyback configurations, as well as more streamlined non-isolated buck configurations, keeping the BOM spend to a minimum.

The peak current and switching frequency continue to reduce as the load decreases, indicating that this device can achieve heightened efficiency degrees in light load conditions. It is thereby idea for any equipment that spends prolonged time in sleep mode.

The device’s low standby power of less than 30mW is another essential attribute. This is of distinct value in small domestic appliances and IoT devices, where available battery power needs to be conserved.

The switcher IC is supplied in a compact SO-8 package. To ensure safety, it meets high-voltage creepage needs and can support operational junction temperatures reaching up to +150C. Overtemperature, output short, overload and open-loop protection functions are all included, as well as undervoltage lockout.