STEVAL-ISA008V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Overcurrent protection

STEVAL-ISA008V1
Low cost wide range power supply for LCD or TV,
28 W output demonstration board based on the VIPer53-E
Data brief
Features
■ Input voltage
– Vin: 90 - 264 Vrms f: 45-66 Hz
■ Output voltages
) _{– 3.3 V ± 2 % at 1 A - dedicated to panel and}
t(s ^{digital circuitry for scaling}
c _{– 7 V ± 8 % at 0.2 A - dedicated to post-}
u _{regulator for microprocessor}
rod ^{– 12 V ± 8 % at 2 A - dedicated to backlight}
lamp inverters, audio and SCART
P _{– 35 V ± 10 % at 10 mA - dedicated to tuner}
te _{for TV-LCD}
le _{■ Standby}
so – Input power less than 1 W at 230 Vac,
b _{delivering 30 mA on 7 V}
O _{■ Overcurrent protection}
) ^{- – On all outputs, with auto-restart at short}
t(s ^removal
c ^{■ PCB type & size}
u _{– Cu single side 35 mm, CEM-1, 130 x 70}
d _mm
ro _{■ Safety}
P _{– According to EN60950, creepage and}
te _{clearance minimum distance 6.4 mm}
le _{■ Emc}
so – According to EN50022 Class B
Ob^{■ RoHS compliant}
STEVAL-ISA008V1
The standby performance is very good, and the
power consumption during standby is 800 mW at
230 Vac.
The circuit is also fully protected against faults
such as output short-circuit or overvoltage.
The design pays particular attention to the final
cost of the solution, so the PCB has been
designed as single layer, and the circuit has no
heat sink. The technology used is the standard
through-holes, but can be easily changed to SMT
as most of the components are available also in
this technology. The circuit has been tested
thoroughly in all the most relevant aspects with
positive results and has been integrated with a
Description
15" LCD-TV application without showing any
problems.
The STEVAL-ISA008V1 demonstration board is a
28 W switch mode power supply which can be
used to supply an LCD monitor or even an LCD-
TV, with 15" or 17" panels and 2 lamps for
backlight together with multimedia functions such
as audio. The SMPS accepts a full range input
voltage (90 to 265 Vrms) and can deliver four
output voltages dedicated to the scaler (3.3 V), to
the mP (7 V), to the backlight and audio (12 V),
and to the TV tuner (35 V).
November 2010
Doc ID 18217 Rev 1
For further information contact your local STMicroelectronics sales office.
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