DER-113: 5V @ 1A, 85 ~ 265 VAC in

Summary

This document is an engineering report describing a design for a 5 V / 1 A adapter. The power supply utilizes a TNY274 as the switching controller.

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

TinySwitch-III incorporates a 700 V power MOSFET, oscillator, high voltage switched current source, current limit (user selectable) and thermal shutdown circuitry. The IC family uses an ON/OFF control scheme and offers a design flexible solution with a low system cost and extended power capability.

Specifications

Manufacturer Power Integrations
Category AC/DC and DC/DC Conversion
Sub-Category AC/DC SMPS - Single Output
Eval Board Board not Stocked
AC Voltage 115 V
230 V
Universal (115 / 230V)
Outputs and Type 1 Isolated
Voltage Out 5 V
Current Out 1 A
Output Power 5 W
Features Current Limit (Adj. or Fixed)
Frequency Jitter for EMI
Open Circuit Protection
Over Voltage Protection
Short Circuit Protection
Thermal Protection
Under Voltage Protection, Brown-Out
Efficiency @ Conditions >68%, 85 ~ 265 VAC, 5V @ 0.95 A
No-load Input Power @ Voltage 300 mW @ 230 V
Switching Frequency 132 kHz
Internal Switch Yes
Component Count + Extras 38 + 1
Voltage In 85 ~ 265 VAC
Design Author Power Integrations
Application / Target Market Audio: MP3 Players
Portable Devices
Main I.C. Base Part TNY274
Date Created By Author 2006-07
Date Added To Library 2020-05

Support Documents & Media

DER-113 - User Guide TNY274-TNY280 - Datasheet

Media

DER_113_Schematic_Full.png DER_113_Board_Full.jpg DER_113_Chart_1_Full.png DER_113_Chart_2_Full.png DER_113_Chart_3_Full.png