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

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

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

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