20 W Single Stage Flyback Power Supply With PFC for LED Ballasts

Focus:

A design based on the TOPSwitch-GX chip implements a universal-input, 12-V 1.67-A output CV/CC power supply for driving high-current LED arrays. This isolated, single-stage flyback design includes power factor correction (PF = 0.9 min.) for compliance with Energy Star solid-state lighting (SSL) requirements for commercial applications. Efficiency is approximately 80% over the input-voltage range.

What you’ll learn:

• How to build a power-factor-corrected, universal-input, 12-V 1.67-A output CV/CC power supply for driving high-current LED arrays

Notes:

Design Idea DI-168

View the Source

Author & Publication:

no author specified, Power Integrations, Vendor website, Feb 01 2008

This article summary appears
in the HOW2POWER Design Guide.

The Design Guide offers
organized access to
hundreds of articles
on dozens of power conversion
and power management topics.

The Design Guide search results
include exclusive summaries
and accurate "how to" analysis
to help you make faster,
more informed decisions.

Search
for more articles