STEVAL-ISA057V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Short-circuit protection based on auto-restart feature

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
■ PCB type and size:
– Material of PCB: FR4
– Double side layout
– Total diameter of demonstration board
58 x 120 mm
STEVAL-ISA057V1
!-V
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