STEVAL-ISA057V1

STEVAL-ISA057V1 15 W wide range SMPS for metering based on the ESBT™ STC03DE220HV and L6565 PWM controller Data Brief Features ■ Minimum input voltage: 125 VDC ■ Maximum input voltage: 1250 VDC ■ Output voltage: 5 V to 3.0 A ■ Maximum output power: 15 W ■ Short-circuit protection based on auto-restart feature ■ Minimum switching frequency limited to 30 kHz ■ Safety compliant according EN60950 ■ Overall converter efficiency > 60% ■ Not galvanic isolated solution used in most metering applications ■ !-V STEVAL-ISA057V1 PCB type and size: – Material of PCB: FR4 – Double side layout – Total diameter of demonstration board 58 x 120 mm single package to reduce application complexity, EMI, price and increase reliability and performance. Description This demonstration board implements a 15 W flyback SMPS which is a very popular and much known topology in applications switch mode power supplies where the required output power is in the range of 5 W to 200 W. The converter is based on the L6565 PWM driver working in quasi resonant mode, it means zero voltage switching or at least switching in valley during turn-off phases and current mode primary control. Excellent wide voltage input range from 125 VDC to 1250 VDC with good efficiency. For this application is used an ESBT™ switch: STC03DE22HV. The ESBT™ is a cascade configuration of a high voltage BJT and a low voltage power MOSFET. STMicroelectronics optimizes performance of both devices and offers this kind of switch in one November 2008 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4    FRQQHFWRU,1 - X) 9 & X) 9 & X) 9 & )XVH$ 5 5 N 5 0 5 0 5 N 5 N 5 0 5 0 5 N 5 N 5 0 5 0 5 N 5 N 5 & Q 5 N 4 %& 5 N 5 N 5 N 5 N 5 N ' 9 4 673'  5 N  N 5 %$9 ' 5 5 5 5 ' &203 &6  8 / Q &  5 N 5 5 6736 %$9 '  6! 73-03 X)9 & & Q  287  9))   )  =&' 9&& ,19 2/4 *1'  7 & Q 5 N 5 5  VHFRQGDU\  ' & S /S P+ 1S1V  X X S N  5 5 & & & 6736/ WUDQVIB(7'BB(*6721B 5 5 4 67&GHKY DX[   3ULPDU\   3ULPDU\  5 N 5 N 5 N & Q 9$ *1'  FRQQHFWRU287   - Figure 1.  1   9'& Circuit schematic STEVAL-ISA057V1 Circuit schematic Schematic !-V STEVAL-ISA057V1 2 Revision history Revision history Table 1. Document revision history Date Revision 12-Nov-2008 1 Changes Initial release. 3/4 STEVAL-ISA057V1 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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