EPR-91 datasheet(5/36 Pages) POWERINT

Part #	EPR-91

Description	Engineering Prototype Report for EP-91 - 12 W Power Supply using

PDF	36 Pages

Scroll/Zoom	100%

Manufacturer	POWERINT [Power Integrations, Inc.]

Direct Link	http://www.powerint.com

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5 / 36 page

7-Feb-2006

EP-91 12 V, 1 A, Universal Input Supply

Page 5 of 36

Power Integrations

Tel: +1 408 414 9200 Fax: +1 408 414 9201

www.powerint.com

Introduction

This report describes a universal input, 12 V, 1 A flyback power supply using a TNY278P

device from the TinySwitch-III family of ICs. It contains the complete specification of the

power supply, a detailed circuit diagram, the entire bill of materials required to build the

supply, extensive documentation of the power transformer, along with test data and

oscillographs of the most important electrical waveforms. The board provides a number

of user configurable options which are designed to demonstrate the features and

flexibility of the TinySwitch-III family.

These include easy adjustment of the device

current limit for increased output power or higher efficiency operation, and a latched

output overvoltage shutdown.

Figure 1 – EP-91 Populated Circuit Board Photographs.

EPR-91 Datasheet(PDF) 5 Page - Power Integrations, Inc.