Datasheet

Data Brief
For further information contact your local STMicroelectronics sales office.
June 2008 Rev 1 1/6
6
STEVAL-ISA033V1
55 W flyback SMPS demonstration board for alarm system
based on the L5991 and STP12NK80Z
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
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.
STEVAL-ISA033V1
www.st.com
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