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ISA033V1
User Manual
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ST ISA033V1 User Manual

Download
55 W flyback SMPS demonstration board for alarm system
based on the L5991 and STP12NK80Z
Features
– 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
Data Brief
STEVAL-ISA033V1
June 2008 Rev 1 1/6
For further information contact your local STMicroelectronics sales office.
www.st.com
6
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Circuit schematic STEVAL-ISA033V1
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E G R A H C T T A B
STEVAL-ISA033V1 Revision history

2 Revision history

Table 1. Document revision history

Date Revision Changes
30-June-2008 1 Initial release.
5/6
STEVAL-ISA033V1
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