johndy:
已知:输入:90-240V50/60HZ 输出:14V 90mA设:VOR=80V,VS=90V,D=0.47,KRP=0.6,TON=4.7US,F=100KZ,VF=0.6V用EE16磁芯,CP1002IC计算如下:IAVE=PO/N*VS=14V*0.09A/0.8*90=0.0157AIP=IAVE/(1-0.5KRP)*D=0.0175/(1-0.5*0.6)*0.47=0.0532ANP=VS*TON/SJ*B=90V*4.7US/19.2*0.15=146TNS=NP*(VO+VF)/VOR=146*(14+0.6)/80=27TL=VS*TON/IP*KRP=90V*4.7US/0.532A*0.6=13252UH请看看是哪不对啊,电感量这么大能行吗?还请高手指点原理图是否可行,先谢了!1662381183860487.pdf