DER-112 datasheet(3/17 Pages) POWERINT

Part #	DER-112

Description	20 W and 30 W Boost Converters with Constant Current Output using DPA423G and DPA424G

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Manufacturer	POWERINT [Power Integrations, Inc.]

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3 / 17 page

DER-112

20 W / 30 W Constant Current LED Backlight Driver

July 19, 2006

Page 3 of 17

Power Integrations

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

www.powerint.com

1

Introduction

This document is an engineering report describing two constant current and constant

voltage (CC/CV) power supplies utilizing DPA423G (at 20 W) and DPA424G (at 30 W).

The power supplies operate from an input of 24 VDC. The power supply is constant-

current regulated (to 500 mA) but operates as a voltage regulator at lower power.

This document provides complete design information including specification, schematic,

bill of material and layout information.

Figure 1 – Photograph – Top View – Board 1.

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