Cascaded converter boosts LED-drive capability

Focus:

A two-stage boost converter achieves the boost ratio needed to power up to 30 white LEDs from 3 alkaline cells. This approach offers a simpler solution than designs based on an integrated flyback regulator.

What you’ll learn:

• How to power 20 to 30 white or ultraviolet LEDs from three alkaline cells
• How to build a two-stage cascaded boost converter

Notes:

An EDN Design Idea

View the Source

Author & Publication:

Grant Smith, National Semiconductor, Phoenix, AZ; Edited by Charles H Small and Fran Granville, EDN, Aug 16 2007

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