STEVAL-ISA017V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Switch mode Quasi-Resonant Flyback Power Supply

STEVAL-ISA017V1
Power supply for STB based on L6565 (US-110 V)
Data Brief
Features
■ Switch mode Quasi-Resonant Flyback Power
Supply
■ Input: 88 to 138 Vac (US version)
■ Switching frequency: 50/60 Hz
■ Output1: 12 V @ 500 mA delivering 6 W with
± 10% of stability
■ Output2: 8 V @ 40 mA delivering 0.32 W with
± 15% of stability
■ Output3: 5 V @ 1 A delivering 5 W with ± 5% of
stability
■ Output4: 3.3 V @ 450 mA delivering 1.485 W
with ± 2% of stability
■ Output5: 1.23 V @ 1 A delivering 5 W with
± 5% of stability
■ Output6: 2.5 V @ 0.7A delivering 1.75 W with
± 2% of stability
General description
This document describes a reference design of a
17 W Switch Mode Power Supply dedicated to
Set-Top Box applications. The board accepts US
input voltages (90 to 265 Vrms) and delivers up to
6 W outputs. It is based on the L6565 quasi
resonant SMPS controller, working in variable
frequency mode.
The Quasi-resonant operation and the high
flexibility of the L6565 make it a very suitable
device, able to satisfy all the requirements with
only few external components.
STEVAL-ISA017V1
ST components
■ STTH108 High Voltage Ultrafast Rectifier, 1 A,
800 V
■ SMBYW02-200 High Efficiency Fast Recovery
Rectifier Diode, 2 A, 200 V
■ STPS5L40 Power Schottky Rectifier, 5 A, 40 V
■ STPS5L25B low drop power Schottky Rectifier,
3 A, 40 V
■ STPS340 Power Schottky Rectifier, 3 A, 40 V
■ L6565 Quasi Resonant SMPS controller
■ L5973D step down switching regulator up to
2.5 A
■ LD29080DT25, 800 mA fixed and adjustable
output, very low dropout voltage regulator
■ STD5NK50Z, N-channel zener protected
SuperMESH Power MOSFETs, 500 V,
1.22 Ohm, 4.4 A
March 2007
Rev 3
For further information contact your local STMicroelectronics sales office.
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