DER-097: 48V @ 450mA, 85 ~ 265VAC in

Summary

This document is an engineering report describing a Power over Ethernet (PoE) power supply utilizing TOP246P. The power supply delivers 21.7 W continuous from an input of 85 to 265 VAC.

This document provides complete design information including specification, schematic, bill of material and transformer design and construction information. The document also provides performance information.

Although this board is designed to satisfy safety isolation requirements, the engineering prototype has not been agency approved. Therefore, all testing should be performed using an isolated source to provide power to the prototype board.

Specifications

Manufacturer Power Integrations
Category AC/DC and DC/DC Conversion
Sub-Category AC/DC SMPS - Single Output
Eval Board ABC
AC Voltage 115 V
230 V
Universal
Outputs and Type 1 Isolated
Voltage Out 48 V
Current Out 450 mA
Output Power 21.7 W
Features Current Limit (Adj. or Fixed)
Frequency Jitter for EMI
Over Voltage Protection
Short Circuit Protection
Soft Start
Thermal Protection
Under Voltage Protection, Brown-Out
Efficiency @ Conditions >75%, 85 VACin, 48 V @ 4.9 ~ 21.7 W
>75%, 265 VACin, 48 V @ 9.8 ~ 21.7 W
>75%, 230 VACin, 48 V @ 7.8 ~ 21.7 W
>75%, 115 VACin, 48 V @ 7.1 ~ 21.7 W
No-load Input Power @ Voltage - Not Given
Switching Frequency 132 kHz
Internal Switch Yes
Component Count + Extras 43 + 4
Voltage In 85 ~ 265 VAC
Design Author Power Integrations
Application / Target Market AC Adapters
PoE, Power Over Ethernet
Main I.C. Base Part TOP246
Date Created By Author 2005-09
Date Added To Library 2019-05