STEVAL-ISA033V1 55 W flyback SMPS demonstration board for alarm system based on the L5991 and STP12NK80Z Data Brief Features ■ Input voltage: – Vin: 88 - 300 Vac (f: 50-60 Hz) ■ Output voltages: – Vout1 = 13.8 V, Iout1 = 3 A – Vout2 = 25 V, Iout2= 200 mA – Vout3 = 3.8 V, Iout3 = 350 mA (1.9 A peak) ■ Output signals: – AC input check – Low battery check STEVAL-ISA033V1 Description This demonstration board is a multi-output SMPS which can be used to supply an alarm system. The circuit is composed of an AC-DC single output converter with an approximate power capability of 60 W, while the other outputs are obtained by means of DC-DC converters. The power supply also integrates a battery charger circuit in order to charge a standard SLA 12 V battery. June 2008 Rev 1 For further information contact your local STMicroelectronics sales office. 1/6 www.st.com 6 N C O N2 N T C 1 6 o hm t 100n 400V FUS E t 2 1 R2 15k R20 1N4148 D5 L1 15m H 2 .7 .7 n C13 C11 1u C12 2 .2 . 2 nF nF 1 2 k C1 2 1 270n C14 R4 15k 1 2 3 4 5 6 7 8 C10 680n Q2 BC337 n.c n .c . L5991 R3 A C _ S IG NA L 100n 400V C2 47k R19 27k R21 330k R15 16 15 14 13 12 11 10 9 4 - C8 2 .2 .2 n C 9 PGND 3 3 0 uF u F -2 -2 5 V R14 22 C3 220u 450V + 1 D1 D IO D E B R ID G E 3 2 F1 3 4 J22 2 k2 k2 R13 1 C7 100p C22 n.c n .c . 22 R11 8 .2 .2 R22 D2 C4 10n 600V n.c n .c . R16 n.c n .c . R17 n.c n .c . R18 P GND S TP 10NK 60Z R10 0 .2 .2 0 M1 1N4148 D6 S TTH106 20K 6W R1 2 C6 2 .2 .2 n T R A N S IL IL D8 7 6 4 PC817 + 1 3 .8 V U4 T5 TR A NS FO R ME R 1 TL431 U3 10 12 1k 1 1n C21 15k R7 C O N8A 1 3 5 7 J8 R8 1k C37 330u 2 4 6 8 S TP T P S 8 H1 H1 0 0 C o ut1 u t1 330u D7 R9 2 .7 .7 K R12 n.c n .c . C23 2 W IIR R E JUMP 1 J23 150n C5 C o ut ut 330u C38 330u 1 3 .8 V R6 3 .9 .9 k R5 18k R46 220R + 1 3 .8 V Figure 1. 3 2/6 3 1 2 F Circuit schematic STEVAL-ISA033V1 Circuit schematic Schematic diagram 1/3 V aristor 1 0 0 nF nF B A T T C H A R G E R - IN PW R C25 220u 25V C31 1 V IN U2 VOUT U2 L 7 8 0 5 /T /T O 2 2 0 1 0 uF u F 2 5 V C e ram ic r a m ic C30 GND 2 4 3 2 1 U7 220p C40 1 2 3 4 5 6 7 R48 860k 4 3 2 1 C32 220n 47n R23 1k C36 14 13 12 11 10 9 8 D4 220pF C29 220n C26 STS5PF30L 1 2 3 4 8 7 6 5 5V M2 2 2 nF nF C27 4 ..77 K R24 3 3 uF 1 0 V + C o ut3 R30 22k TSM108 L5973 3 5 6 7 8 U5 4 7 0 uH uH S W K E Y -S -S P D T SW 1 STPS2L25U 2 3 .3 .3 K R26 6 .8 K R25 L4 1 uH 3 A 1 5 uH STPS2L25U D3 L3 0 .0 .0 8 R s e ns ns e 0 .0 .0 4 R s e ns ns e 1 3 3 0 uF 1 0 V + C o ut2 C39 1 uF uF 4 5 0 V R31 2 .7 .7 k R32 12k A C _ S IG N A L R 2 7 2 .2 .2 k B A TT C HA R G E R - O UT O U T - 3 .8 V 180k R40 220u 25V C28 D9 D IIO ODE R33 150k 2W R 4 9 1 .2 .2 k R28 56k U6 BC847A R34 10k A C F A IL UR E 5V B A T T F A IL U R E B A TT C HA R G E R - O UT PC852 Q1 R29 10k 5V IB A T T _ M E A S U R E B A TT C HA R G E R - O UT 0 .1 . 1 -3 -3 W R50 F U S E /S /S M - 4 A F2 B A T T C H A R G E R - IN 1 3 .8 V C O N8 8 7 6 5 4 3 2 1 J21 0 B A T T .C .C H A R G E R 1 2 J10 C O N2 1 2 J9 5V 1 3 .8 V O U T - 3 .8 V A C F A IL UR E B A T T F A IL U R E Figure 2. 5 6 7 8 STEVAL-ISA033V1 Circuit schematic Schematic diagram 2/3 3/6 13.8V 2 1 B A T T C HA R G E R - O UT VDC_CTRL IBATT_CTRL VBATT_CTRL 3 6 5 10 5 4 1 3 .8 V HCF4011B HC F 4 0 1 1 B U26B U2 6 B 0 TS912 7 U27B CON8A C O N8 A PWR BATT CHARGER - OUT 2 3 CON8A C O N8 A 2 4 6 8 VREF2 VREF1 VBATT DC_IN 0 VBATT_CTRL R36 R36 TS912 1 U27A IBATT_CTRL C35 C35 100n 100n - + 8 IBATT_MEASURE BATT_OK 1 3 5 7 PW R HCF4011B HC F 4 0 1 1 B 6 U28C U2 8 C 6 - 5 + 0 R37 R37 3.3k 3 .3 k J20 J20 9 8 VREF1 R35 R35 5.6K 5 .6 K 1 3 5 7 2 4 6 8 4 HCF4011B HC F 4 0 1 1 B U28B U2 8 B C34 C34 100n 100n VREF2 R38 R38 820R 820R R47 R47 1k2 1 k2 u29 u2 9 vn750pt vn7 5 0 p t J19 J19 C33 C33 100n 100n HCF4011B HC F 4 0 1 1 B U28A U2 8 A HCF4011B HC F 4 0 1 1 B 3 7 U26A U2 6 A 2 1 14 VDC_CTRL 14 7 VBATT 14 7 8 4 DC_IN 14 7 14 7 1 2 3 4 5 4/6 4 R45 R45 1.8k 1 .8 k R44 R44 10k 10k 1k 1k R43 R43 0 VBATT BATT_OK R39 R39 10k 10k U16 U1 6 TL431 TL431 R42 R42 1k 1k u30 u3 0 vn750pt vn7 5 0 p t 1 k 2 STPS20L25C STPS20L25C a1 a U31 U3 1 PWR Figure 3. 1 2 3 4 5 3 Circuit schematic STEVAL-ISA033V1 Schematic diagram 3/3 STEVAL-ISA033V1 2 Revision history Revision history Table 1. Document revision history Date Revision 09-June-2008 1 Changes Initial release. 5/6 STEVAL-ISA033V1 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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