条件:
输入电压:200VAC~270VAC
输出电压:400VDC
输出功率:400W
工作频率:100KHz
转换效率:0.95
功率因素:0.99
1.电感设计
1.1 Ipk=2*Pin/(square2*Vinmin)=(square2*400/0.95)/200
=3.0A
1.2 deltaI=(0.2~0.3)*3=0.6~0.9A
1.3 D=(Vo-Vin)/Vo=(400-square2*200)/400=0.3
1.4 L=Vin*D*T/deltaI=square2*2*0.3*10/(0.6~0.9)=0.9~1.4mH 取1.2mH
1.5 I=P/Vin=400/200=2
1.6 #=L*I^2=1.2*4=4.8
1.7 查表型号为:77548(kool mu)
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