EVAL6668-STB: 40W, 5V, 12V, 1.8V, 3.3V, 90 ~ 265V in

Summary

This document describes a reference design of a 40W Switch Mode Power Supply dedicated to Set-Top box application. The board accepts wide range input voltage (90 to 265Vrms) and delivers 4 outputs. It is based on the new controller L6668, working in PWM fixed frequency current mode.

High efficiency and low standby consumption are the main characteristics of this board. Such features, coupled with the minimal part count required and the global solution low cost approach, makes it an ideal solution for powering digital consumer equipment, meeting worldwide standby rules.

Specifications

Manufacturer STMicroelectronics
Category AC/DC and DC/DC Conversion
Sub-Category AC/DC SMPS - Multi Output
Eval Board Part Number 497-5499-ND
Eval Board Supplier STMicroelectronics
Eval Board Board not Stocked
AC Voltage 115 V
230 V
Universal (115 / 230V)
Outputs and Type 4 Isolated
Voltage Out: Highest Current First 5V, 12V, 1.8V, 3.3V
Current Out 2.4A, 1.9A, 1.7A, 500mA
Output Power 40 W
Efficiency @ Conditions >80%, 230V in, All Outputs @ Full Load
>78%, 115V in, All Outputs @ Full Load
No-load Input Power @ Voltage 510 mW @ 115 V
750 mW @ 230 V
Features Over Voltage Protection
Short Circuit Protection
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 65 kHz
Internal Switch No
Component Count + Extras 92 + 18
Voltage In 90 ~ 265 VAC
Application / Target Market DVD/Blu-ray Players
Set-Top Boxes
Design Author STMicroelectronics
Main I.C. Base Part L6668
Date Created By Author 2005-11
Date Added To Library 2012-08

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Support Documents & Media

EVAL6668-STB - User Guide L6668 - Datasheet

Media

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