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