Higher Efficiency in Lighting through Primary Side Regulation

Focus:

When driving high-brightness LEDs in solid-state lighting (SSL) applications, designing an offline LED power supply based on primary-side regulation can reduce parts count and board space requirements versus the conventional approach based on secondary-side regulation. Secondary-side regulation also permits improved efficiency. This article describes the operating principles and benefits of Fairchild's implementation of primary-side regulation and discusses the performance achieved by its FSEZ1016A controller IC. The article begins with a discussion of the benefits of LED lighting.

What you’ll learn:

• How to understand the operation abd benefits of primary-side regulation for offline LED power supplies

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Author & Publication:

Peter Hsieh, Leon Lee and Kevin Hsueh; Fairchild Semiconductor, Bodo's Power Systems, Mar 01 2009

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