ST ISA057V1 User Manual

STEVAL-ISA057V1

15 W wide range SMPS for metering based on the ESBT™ STC03DE220HV and L6565 PWM controller

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

■PCB type and size:

–Material of PCB: FR4

–Double side layout

–Total diameter of demonstration board 58 x 120 mm

Data Brief

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STEVAL-ISA057V1

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	1/4
For further information contact your local STMicroelectronics sales office.		www.st.com

2/4

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ISA057V1-STEVAL