data brief for further information contact your local stmicroelectronics sales office. november 2008 rev 1 1/4 4 STEVAL-ISA031V1 demonstration board for 40 w auxiliary 3-phase power supply based on the l6565 and stw4n150 features input voltage range: 185 vac to 460 vac input frequency range: 50/60 hz output voltage v out1 = 24 v @ i out1 = 1.7 a output voltage v out2 = 5 v @ i out2 = 1 a total output power 40 w safety: en60950 emi: en55014 description this demonstration board introduces a solution for industrial power supplies fed by a 3-phase mains supply. it takes advantage of the high voltage mosfet (1500 v breakdown voltage) to optimize the operation of the quasi-resonant flyback converter based on the primary controller l6565. the demonstration board has been designed and developed to address low power applications. the board features two outputs, 24 v and 5 v, and is able to deliver more than 40 w. the 5 v output is obtained using an integrated dc-dc converter based on l5970ad, connected on the 24 v output. STEVAL-ISA031V1 www.st.com
circuit schematic STEVAL-ISA031V1 2/4 1 circuit schematic figure 1. schematic hs 12 c/w 5v/1a 24v/1.7a 480-650vdc d9 stps5h100 d9 stps5h100 d2 1n4007 d2 1n4007 a c l1 1mh l1 1mh + c1 22uf/450v + c1 22uf/450v r14 18k r14 18k c21 nc c21 nc t1 transformer t1 transformer 7 2 1 3 14 8 r10 150k/2w r10 150k/2w r25 4k7 r25 4k7 r9 330k r9 330k 400vac con1 400vac con1 1 2 c8 100n c8 100n r15 27k r15 27k c10 47u c10 47u r4 1m r4 1m r18 2.2 r18 2.2 230vac con2 230vac con2 1 2 r5 1.8m r5 1.8m c5 3.3n/2kv c5 3.3n/2kv l3 1mh l3 1mh r13 2.2k - nc r13 2.2k - nc r19 1k r19 1k c6 1n c6 1n r23 12k r23 12k + c2 22uf/450v + c2 22uf/450v r28 10k - 1% r28 10k - 1% c23 n.c. c23 n.c. c7 2.2n c7 2.2n d4 1n4007 d4 1n4007 a c r6 1.8m r6 1.8m r11 150k/2w r11 150k/2w c3 10n-x2 c3 10n-x2 u1 l6565 u1 l6565 vff 3 zcd 5 inv 1 gnd 6 gd 7 comp 2 cs 4 vcc 8 c11 470p c11 470p l4 27 mh l4 27 mh 1 2 3 4 l6 15uh l6 15uh c9 2.2n c9 2.2n c16 22u/35v c16 22u/35v + c17 220uf/10v + c17 220uf/10v d7 1n4148 d7 1n4148 c20 10uf/35v c20 10uf/35v d8 1n4148 d8 1n4148 r26 2k2 r26 2k2 r22 nc r22 nc d6 stth108 d6 stth108 r8 330k r8 330k r2 1m r2 1m r24 3k9 r24 3k9 d3 1n4007 d3 1n4007 a c c13 6.8n - nc c13 6.8n - nc m1 stp4n150 m1 stp4n150 1 2 3 r29 5k6 r29 5k6 c12 nc c12 nc c22 22n c22 22n r21 2r2 r21 2r2 r7 1.8m r7 1.8m l2 1mh l2 1mh pc817 u2 pc817 u2 f1 1a f1 1a r17 56k r17 56k r1 1m r1 1m c19 220p c19 220p r16 120k r16 120k u5 tl431 u5 tl431 2 1 3 nt c1 50e nt c1 50e c15 220u/35v c15 220u/35v d1 1n4007 d1 1n4007 a c d5 stth108 d5 stth108 q11 nc q11 nc r12 16r r12 16r d10 stps2l25u d10 stps2l25u j6 con3_0 j6 con3_0 2 1 3 l5 10uh l5 10uh u4 l5970ad u4 l5970ad inh 3 fb 5 out 1 vref 6 gnd 7 sync 2 comp 4 vcc 8 r3 1m r3 1m c4 10n-x2 c4 10n-x2 c14 2.2n - y1 c14 2.2n - y1 r30 1.2k - 1% r30 1.2k - 1% c18 22n c18 22n r20 2r2 r20 2r2 r27 3k3 r27 3k3
STEVAL-ISA031V1 revision history 3/4 2 revision history table 1. document revision history date revision changes 21-nov-2008 1 initial release.
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