开关电源实训报告.doc

30w-12v 1. buck2. uc3842 1. av220vdc12v30w2. pwmicmosfetuc3842av220v-dc12v30w 4uc3842tl431pc8174-1 1uc38421uc3842uc3842mosfet2uc3842pwm2050w500khz,0.2%vmosdmostmos200ma1amosfetrc40khzmosfetrc5.0v0.1v0.2mv/0.01%/v,lm3171ma,15mavim=30vipm=1a,0.2a,pom=50w dm=1w,p16v0.5ma1034v15ma5v(50ma)21(3)(1)pwm pwm30%100%8%70%100%3%0.01%/v31v11vpwm13/3uc38424-2 uc3842uc3842dip-84-2vivogndvref5.0vrt/ctuc38422,5.0vpwm34v5v5v/50mart48ct4gnd5uvlo16v10vpwmvccgndpwmmos2tl431tl431+12vpc817uc3842q1r19r18tl431svr+12v1tl4314-3cathode4-3 tl4312tl43137v-100+150ma36v100ma2.495v1.5ma3tl431 2013 41312345? 2013412013410? c4 -: 100rmb200051-1005-10100-500iso9001 ac/dc/dc/dcleddc/ac 15kwiso9001-2000101234561l220vn220vfgg+5v+5vadj2 pcb300ac 300pwm,.(dapwm),.,.ad,da,pwm,.,pid.ad,pwm,. ,.,pwm. dsp,. ,avr,pwm,.avr,.,da,pwm,51.51avr.1010101234 2011916 1 1 90v220v2 12v30w3 65khz2 cr6853 73-86mpp1 2 3 1 2 110kv0.5a3 110kv0.5a 1 2 0.5a6w3 110kv0.5a1a1.5a2ab8-405.091 091 2012919 1 1 90v220v2 12v30w3 65khz2 cr685390v-220v vin emi c1 d1 c1390220vdcfs1 d190220vdcmosfet q1 drainmosfetq1 sourcemosfet q1 drain bvdssmosfet drain-source breakdown voltage,650v)d3r3c3 mosfet drain bvdss d3r7c5 d4 c7l2c8 12v u3u2 r11r13 u3r12c7 u3 u2 7 1 1 .2).q1,(a),(b).q1,t1,.,d1,co.lp,ip:vdc=lp*dip/dtbrbw.3.q1, (a),(b).q1,(ampere-turns ni),?b.?b(bwbr),d1,d1,co.:vs(t)=vo+vf (vfd1).:lp=(np/ns)2*ls (ls),0,(ccm).2 (ccm)1. .vin=90220vac;./:vout1=5v/10a,vout2=12v/1a; 30wcx1lf1akbp210bd1c1uc38422n60sr1060mov2mov3f1f2f3fdg1f1f2f3 2c1l1c2c3c5rt1rt1rt1rt13brg1c5c51. 21mosmosfetmos105mos 23r4c3r5r6c4d1d2mosemiq1r3r51vuc3842q1 r1q1cgscgdrcr1r1z1mosgs18vmosq1q1q1d1d2r5r4c3icc4r