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)
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Our products built with input/output overvoltage protection, input/output overcurrent protection, over temperature protection, over power protection and short circuit protection. You can send more details of this product, so that we can offer best service to you!
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