Author - Ho Wong

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Ho Wong	Write for Electronic Design
Ho Wong, product marketing manager for Zetex (Asia) Ltd., Hong Kong, received a BSEE and MS in quality management from Hong Kong Polytechnic University. Email address: hwong@zetex.com
1 results found for Ho Wong, displaying items 1 - 1

February 17, 2005 [Ideas For Design]
Drive White LEDs Using A Boost Converter In Buck Mode
See associated figure Low-voltage halogen lighting for decorative and architectural use continues to gain in popularity. Due to the comparatively short lifetime and low reliability of halogen bulbs, however, high-power LEDs are emerging as the preferred solution. The circuit in the figure offers a novel approach to high-power white LED driving—using a standard boost-converter IC in a voltage-reducing or "buck" mode. This solution...