EVALTSM1052: 3W, 5.1V @ 600mA, 90 ~ 264VAC

Summary

This document describes a low power adapter that can be used in travel battery charger applications. It uses the new Constant Voltage Constant Current (CVCC) controller TSM1052, which is housed in one of the smallest packages available (SOT23-6L). Thanks to its low consumption and low operating voltage, good electrical performance is achieved. Another important feature of this SMPS is the absence of the Y1 safety capacitor between primary and secondary grounds.

At primary side a VIPer12A-E has been used. This IC includes a current mode PWM controller and a Power MOSFET in a small SO-8 package. The converter works in both continuous and discontinuous conduction mode depending on the input voltage (the circuit has a wide range input) and the output load. The switching frequency is internally fixed at 60 KHz. The design has been developed to reduce overall component count and adapter cost.

Specifications

Manufacturer STMicroelectronics
Category AC/DC and DC/DC Conversion
Sub-Category AC/DC SMPS - Single Output
Eval Board Part Number 497-6242-ND
Eval Board Supplier STMicroelectronics
Eval Board Board not Stocked
AC Voltage 115 V
230 V
Universal (115 / 230V)
Outputs and Type 1 Isolated
Voltage Out 5.1 V
Current Out 600 mA
Output Power 3 W
Features Light Load Mode
Over Current Protection
Over Voltage Protection
Short Circuit Protection
Thermal Protection
Under Voltage Protection, Brown-Out
Zero Load Regulation
Efficiency @ Conditions >70%, 115V in, 5.1V @ 200 ~ 600 mA
>65%, 230V in, 5.1V @ 300 ~ 600 mA
No-load Input Power @ Voltage 131 mW @ 115 V
239 mW @ 230 V
Switching Frequency 60 kHz
Internal Switch Yes
Component Count + Extras 37 + 0
Voltage In 90 ~ 264 VAC
Design Author STMicroelectronics
Application / Target Market Battery Chargers
Power: AC Adapters
Power: Auxiliary Power Supply
Main I.C. Base Part TSM1052
VIPer12A-E
Date Created By Author
Date Added To Library 2011-03

Support Documents & Media

VIPer12A-E - Datasheet EVALTSM1052 - User Guide - AN2448 TSM1052 - Datasheet

Media

EVALTSM1052_Schematic.JPG EVALTSM1052_Board_1.JPG EVALTSM1052_Board_2.JPG EVALTSM1052_Chart.JPG