RDK-142: 35W, 5V @ 2.2A, 12V @ 2A, 90 ~ 264VAC

Summary

This document is an engineering report describing a LCD Monitor power supply utilizing a TOP258PN. This power supply is intended as a general purpose evaluation platform for TOPSwitch-HX.

A Flyback converter configuration built around TOP258PN is used in this power supply to obtain two output voltages. The 5 V output can supply a load current of 2.2 A, and the 12 V output can supply a load current of 2.0 A. This power supply can operate between 90 – 264 VAC.

The 5 V output is the main regulated output. This output is regulated using a TL431 voltage reference. Some feedback is also derived from the 12 V output for improved cross regulation.

The document contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, and performance data.

Specifications

Manufacturer Power Integrations
Category AC/DC and DC/DC Conversion
Sub-Category AC/DC SMPS - Multi Output
Eval Board Part Number 596-1193-ND
Eval Board Supplier Power Integrations
Eval Board Board not Stocked
AC Voltage 115 V
230 V
Universal (115 / 230V)
Outputs and Type 2 Isolated
Voltage Out: Highest Current First 12V, 5V
Current Out 2.2A, 2A
Output Power 35 W
Efficiency @ Conditions >83%, 230V in, From 50% ~ 100% Full Load
>82%, 115V in, From 50% ~ 100% Full Load
No-load Input Power @ Voltage 150 mW @ 115 V
200 mW @ 230 V
Features Energy Standard Compliant
Over Voltage Protection
Short Circuit Protection
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 66 kHz
Internal Switch Yes
Component Count + Extras 62 + 6
Voltage In 90 ~ 264 VAC
Application / Target Market LCD TV / Monitor
Design Author Power Integrations
Main I.C. Base Part TOP258
Date Created By Author 2007-07
Date Added To Library 2017-05

Support Documents & Media

RDK-142 - User Guide TOP252 - 262 - Datasheet

Media

RDK_142_Schematic_Full.png RDK_142_Board.JPG RDK_142_Efficiency_Chart.JPG RDK_142_No_Load_Power_Chart.JPG