STEVAL-ISA019V3 80 W ESBT quasi-resonant wide-range SMPS demonstration board based on the L6565 for 3-phase applications Data brief Features ■ 3-phase 80 W auxiliary output SMPS ■ Quasi-resonant SMPS ■ Input: 180 V to 600 V AC AC ■ Output voltage: 24 V, 3.3 A ■ Maximum output power: 80 W ■ Efficiency > 80 % ■ Switching frequency > 50 kHz ■ Safety compliant according to EN60950 ■ Feedback: secondary regulation ■ RoHS compliant STEVAL-ISA019V3 Description The STEVAL-ISA019V3 demonstration board is a 3-phase auxiliary power supply with an 80 W dual output SMPS, using the L6565 PWM driver and the STC04IE170HP ESBT as the main switch. The combination of these ST parts provides a high-efficiency solution for high DC input voltage, a typical requirement of any 3-phase application. The necessity to handle both high output power and wide input voltage is resolved using a flyback stage working in mixed operation mode: discontinuous and continuous. April 2011 Doc ID 018778 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4

Circuit schematic STEVAL-ISA019V3 1 Circuit schematic Figure 1. Demonstration board schematic C D V 3 21 44 J 22 R2626 1k2 R2020 47k7k R2222 2.7k7k VV C4+ 1000u0u 35510 R1919 47k47k 2115k15k D5 PS20120D0120DTPS C3+ 1000u000u 35V35V R24 1k5 R23 3k3 R C1310n0nU2 3 TL431L431 S 1 2 1 2 121211111010 Ns 987 6017C017C ISO14 3 PC81717 H- T1 8686 5 Np 63 0NaNaux 2 DELTA R14 56k56k C1111 2n22n2 C10 10p10p 5 R5D6 2R2STPSPS11 D1111 1N41484148 58 ZVCCDC 2COMP GINNDV 61 C6+ 10100nuu 50V50V R1313 2k2 7 U1OL6565N565NUT 4CS VFC9F 470p0p3 C5 4747 HP 0 VCC D8 STTTTH108108 1212202102101 423turnturns T21 Q1 STC04IE1717 R123 10R10R R151k1k R1717 1R5 0.6W 0505 4 2 2W C76.8n 2kV 2W D7 STTH10808 VOGT SLD1010112STTTTH108turnurns2 0R0R R111R1R R1616 1R5 0.6W6W R639k R739k R1111b D9 3V C12121n1n R1180k0k R2200k0k R3200k0k R4180k0k C C8 50n0n 1 2 VC 1 R8 1M1 R9 1M1 R1010 1M1 R1818 10k C+ C+ VV00554 u02007072 D41N400707VV0054 u022 NTC110R F2T1A1A 4 2N D1 D11N400707 D31N400707 55050VAVAC 12 00- J1 166 AAMM0077997722VV11 2/4 Doc ID 018778 Rev 1

STEVAL-ISA019V3 Revision history 2 Revision history Table 1. Document revision history Date Revision Changes 28-Apr-2011 1 Initial release. Doc ID 018778 Rev 1 3/4

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