各位大俠:我要用SA7527 作一個LED DRIVER 要求如下:
1.UL&FCC(Class 2) certification  
2.Input Voltage: 120Vac 60Hz  
3.Output Current: 330mA(+/-5%) Constant Current  
4.Short Circuit&Overload&Output Voltage&Surge Test Protection  
5.Isolated Output  
6.Rated Wattage:10W Nominal LED Load  
7.Practical Operation Wattage:Up to 12.5W Load Without Shut down  
8.Power Factor(PF):No Less Than 0.9  
9.Efficiency:>85%  
10.Life:>40,000 Hours  

那個變壓器怎么樣去設(shè)計?請各位大俠幫忙
謝謝 1172431238417311.pcb