DER-112(#1): 500mA @ 40V Max, 24V in, Boost

Summary

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.

Specifications

Manufacturer Power Integrations
Category Lighting
Sub-Category LED Drivers - DC In
Eval Board Board not Stocked
Voltage In 24 V
Topology Step Up
Current Out 500 mA
Voltage Out (Max) 40 V
Outputs and Type 1 Non-Isolated
Efficiency @ Conditions >90%, 24V in, 3 ~ 23.5 W @ 40 V
Features Current Limit (Adj. or Fixed)
Open Circuit Protection
Over Current Protection
Over Voltage Protection
Soft Start
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 400 kHz
Component Count + Extras 19 + 4
Design Author Power Integrations
Application / Target Market LCD Backlighting
Main I.C. Base Part DPA423
Date Created By Author 2006-07
Date Added To Library 2014-09

Support Documents & Media

DPA423-DPA426 - Datasheet DER-112 - User Guide

Media

DER_112_#1__Schematic_Full.png DER_112_#1__Board_1_Full.jpg DER_112_#1__Board_2_Full.jpg DER_112_#1__Chart_1_Full.png DER_112_#1__Chart_2_Full.png