MOS power IC full range

1206 red anti-stick

Photocoupler

Summary:

The flyback power supply design uses the TNY279PN (U1) in an 8-pin DIP package, making it ideal for adapter applications. The four source pins are distributed on the same side and can be operated in a sealed adapter with an external ambient temperature of 40 °C by embedding a small metal heat sink.

design feature

• Simple design, low cost, and low component count
• Low no-load power consumption, no-load power consumption <100 mW at 265 VAC input
• High efficiency, efficiency >81% at 90 VAC input
• Meets CEC's requirements for efficiency in the load mode (up to 79% efficiency, while the standard requires 73.5% efficiency)
• EMI margin >10 dBμV relative to EN55022B conducted EMI limits
• Simple primary side output overvoltage latching shutdown circuit protects the load in the event of a fault
• Low power frequency leakage current <10 μA

Circuit diagram of 15W, 12V flyback power adapter

See the uploading documentation for details (click to download)