Design contains obsolete parts

DER-227: 5V @ 550mA, 85 ~ 265VAC in

Summary

This document is an engineering report describing a 5 V, 0.6 A power supply utilizing the LNK363DN (SO8 package) from the LinkSwitch-XT family. It contains the power supply specification, schematic, bill of materials, transformer documentation, printed circuit layout, and performance data.

This design highlights the ultra-low no-load input power consumption that is possible when using a LinkSwitch-XT device.

The Flyback power supply shown in Figure 3 was designed around the LNK363DN (U1). The output voltage is sensed and feed back to U1 through optocoupler U2. That feedback is used by U1 to maintain constant voltage (CV) regulation of the output.

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 550 mA
Output Power 3 W
Features Current Limit (Adj. or Fixed)
Energy Standard Compliant
Frequency Jitter for EMI
Open Circuit Protection
Short Circuit Protection
Thermal Protection
Efficiency @ Conditions >71%, 115 VAC, 5V @ 120 ~ 600 mA
>69%, 85 VAC, 5V @ 100 ~ 600 mA
>69%, 230 VAC, 5V @ 180 ~ 600 mA
>68%, 265 VAC, 5V @ 290 ~ 600 mA
No-load Input Power @ Voltage 20 mW @ 230 V
Switching Frequency 132 kHz
Internal Switch Yes
Component Count + Extras 30 + 6
Voltage In 85 ~ 265 VAC
Design Author Power Integrations
Application / Target Market Audio: MP3 Players
Battery Chargers
Cell Phones
Digital Cameras
Portable Devices
Power: AC Adapters
Power: Industrial Power
RF: Metering
White Goods
Main I.C. Base Part LNK363
Date Created By Author 2009-10
Date Added To Library 2014-07

Support Documents & Media

DER-227 - User Guide LNK363 - Datasheet

Media

DER_227_Schematic_Full.png DER_227_Board_1_Full.jpg DER_227_Board_2_Full.jpg DER_227_Chart_1_Full.png DER_227_Chart_2_Full.png DER_227_Chart_3_Full.png