data brief for further information contact your local stmicroelectronics sales office. december 2007 rev 1 1/4 4 STEVAL-ISA009V1 viper53-e single output reference design board with 90 to 264 v ac input and 24 w output features switch-mode general-purpose power supply current mode control with adjustable limitation 75% efficiency output short-circuit and overload protection thermal shutdown protection meets en55022 class b emi specification blue angel compliant description this reference design board is an offline wide- range power supply that incorporates the viper53-e, and is set up for secondary regulation by driving the pwm controller through an optocoupler. the switching frequency is set at 100 khz and the total output power is 24 w. STEVAL-ISA009V1 www.st.com
board schematic STEVAL-ISA009V1 2/4 1 board schematic figure 1. schematic c4 22uf 25v 1 2 j1 con2 c2 22uf 400v c6 22nf 50v r1 5 ohms c5 680uf 25v 2 x 30mh l1 c3 100pf 1kv r2 2k 0.5w 1 2 4 3 u2 h11a817a n l 30mh r6 470 1 2 3 4 j2 con4 1w f1 fuse 0.5a 5x20mm 0 d3 byw100-200 r9 15k c9 220uf 25v 12v rtn 1% 0.5w l2 10uh c7 100uf 25v c1 0.047uf 12v @ 0.42a 250v 85 to 264vac 1% all resistors are 1/4 w 5% unless specified. all capacitors are in uf and 50 v unless specified. drain 8 drain 6 drain 7 drain 5 source 1 source 2 fb 3 vd d 4 u1 vip e r 22 a 50v 0 r7 9.1k d1 1n4148 0 u3 tl4 31 st 5v gnd r8 2.49k r5 2.43k c11 0.01uf r4 68 w1 0 d2 1n5821 c8 4.7nf y1 cap c12 10uf 400v . 3 . 4 . 5 . 2 . 6 . 1 . 8 . 7 t1 cvp32-002 4 3 2 1 br 1 kbp2 10gd i
STEVAL-ISA009V1 revision history 3/4 2 revision history table 1. document revision history date revision changes 28-nov-2007 1 initial release
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