Tapped single-stage buck converter LED driver

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11233449
APP PUB NO 20190268983A1
SERIAL NO

15906797

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An apparatus is disclosed, comprising: a first light source having a first threshold voltage; a second light source having a second threshold voltage; a rectifier configured to receive an AC voltage as input and generate a DC voltage based on the AC voltage; a single-stage Buck converter section coupled to the rectifier, the first light source, and the second light source, the Buck converter section being configured to output a current generated based on the DC voltage towards the first light source and the second light source; and a switching circuit configured to reduce a load on the Buck converter section by periodically diverting the current away from the second light source when a magnitude of the AC voltage is less than or equal to a sum of the first threshold voltage and the second threshold voltage.

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Patent Owner(s)

Patent OwnerAddress
LUMILEDS LLC370 W TRIMBLE ROAD SAN JOSE CA 95131

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Soer, Wouter San Jose, US 32 64
Song, Zhi Hua San Jose, US 24 39

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