Diodes Inc. has launched a universal AC high-voltage input, non-isolated offline switcher IC that addresses the challenges associated with using a bias power supply. The AP3928 switcher IC is designed for environments where higher power levels are required, such as in industrial control or home automation systems, home appliances, and IoT devices.
Key specs include a 600-mA maximum output current that allows for a 10-W output power rating and low standby power of less than 30 mW. This is particularly beneficial for small appliances and IoT devices, where battery power savings is a requirement. The device integrates a 700-V high performance power MOSFET.
A key differentiator of the AP3928 is that it supports conventional offline non-isolated flyback configurations, as well as more streamlined non-isolated buck configurations, said the company, which helps reduce bill-of-materials (BOM) costs by requiring fewer external components.
Since the peak current and switching frequency will continuously reduce as the load decreases, the switcher can achieve higher efficiency in light load conditions, said the company. This makes it well-suited for any type of equipment that spends a prolonged time in sleep mode.
The AP3928 switcher meets high-voltage creepage requirements and can support operational junction temperatures up to 150°C. Protection features include overtemperature, output short, overload, and open-loop as well as undervoltage lockout. The AP3928, supplied in a SO-8 package, is priced at $0.25 in quantities of 1,000.
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