Engineering Prototype Report –
3 W Universal Input TinySwitchÒ-II
TNY264 Power Supply
Title
3 W, (9 V, 0.33 A), 85–265 VAC input
Specification
AC
Adapters
(cordless
phones,
Target
answering machines and other consumer
products)
Applications
Power Integrations Applications Dept.
Author
Doc Num.
Date
EPR-000014
22 Feb 2002
1.3
Revision
Features
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Cost effective (minimum parts count and single sided PC board)
Low Cost EF12.6 transformer (132 kHz operation)
Compact design: 2.0” x 1.2” x 0.75”
No-load consumption < 250mW (230 VAC)
Auto-restart function limits overload output power
·
·
·
·
·
·
·
·
·
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Short circuit protected
Built-in circuitry practically eliminates audible noise (standard varnished transformer)
ON/OFF control allows simple Zener reference and eliminates the need for loop compensation
No-load regulation achieved without preload resistor
Low EMI due to frequency jittering: meets CISPR22B with output capacitively grounded
Optional under-voltage detect eliminates power-up glitches
Hysteretic thermal shutdown: Protects power supply and automatically recovers when fault is
removed
Power Integrations, Inc.
5245 Hellyer Avenue, San Jose, CA 95138 USA.
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com