Texas Instruments UCC28911 | Demoboard PMP30026

Description

A quasi-resonant primary-side regulated isolated Flyback is used to provide 12V @ 1A from universal input voltage (90Vac to 264Vac). The converter does not employ any optocoupler and regulates the output voltage by sensing the auxiliary winding on primary side. A peak input voltage detector is used to sense input AC voltage, delivering 1/100 AC RMS equivalent voltage, with a +/-5% precision.

Features

Simple isolated PSR Flyback converter with integrated 700V FETCompact solution ("L" shaped PCB) supplies 12W with almost flat efficiency from 50mA to 1A load (75%...84%)Opto-less topology increases the reliability of the power supplyGood output voltage regulation versus load: +/-5% in the whole temperature range

Typical applications

• Home and Building Automation
• LED Lighting
• Smart plug, IoT, MCU and WiFi Power
• Power Metering Bias
• Aux power for TV, Server, White Goods
• Thermostat
• Bias Power for Smoke Alarm, Fire Alarm and
• Wall Adapters, Chargers for Mobile Phones

More information

• Datasheet
• IC product information