RDK-131: 300mA @ 12V Max, 85 ~ 265 VAC In

Summary

This engineering report describes an LED drive power supply that uses a member of the LinkSwitch-TN family of devices, the LNK306DN. The circuit regulates its load current to 300 mA while developing about 10 V across three series HB-LEDs.

The design provides no safety isolation between the AC input and DC output. Therefore the enclosure must be designed to provide isolation.

The report contains the power supply specification, a circuit diagram, a complete bill of materials, the PI Xls spreadsheet results for the design, the printed circuit board layouts, and performance data.

Specifications

Manufacturer Power Integrations
Category Lighting
Sub-Category LED Drivers - AC / Offline
Eval Board Part Number 596-1127-ND
Eval Board Supplier Power Integrations
Eval Board Board not Stocked
AC Voltage 115 V
230 V
Universal
Outputs and Type 1 Non-Isolated
Current Out 300 mA
Voltage Out (Max) 12 V
Efficiency @ Conditions >63%, 115V in, 12V @ 300 mA
>58%, 230V in, 12V @ 300 mA
Features Open Circuit Protection
Switching Frequency 66 kHz
Component Count + Extras 25 + 13
Design Author Power Integrations
Application / Target Market Lighting: LED Home Lighting
Voltage In 85 ~ 265 VAC
Power Factor
Standard(s)
Main I.C. Base Part LNK306
Date Created By Author
Date Added To Library 2011-03

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Support Documents & Media

RDK-131 - Reference Design Report LNK302-306 - Datasheet RDK-131 - Design Idea Overview DI-131

Media

RDK_131_Schematic_Full.JPG RDK_131_Board_2.JPG RDK_131_Usage_Drawing.JPG