Solid state light source driver establishing buck or boost operation
Abstract
A solid state light source driver circuit that operates in either a buck convertor or a boost convertor configuration is provided. The driver circuit includes a controller, a boost switch circuit and a buck switch circuit, each coupled to the controller, and a feedback circuit, coupled to the light source. The feedback circuit provides feedback to the controller, representing a DC output of the driver circuit. The controller controls the boost switch circuit and the buck switch circuit in response to the feedback signal, to regulate current to the light source. The controller places the driver circuit in its boost converter configuration when the DC output is less than a rectified AC voltage coupled to the driver circuit at an input node. The controller places the driver circuit in its buck converter configuration when the DC output is greater than the rectified AC voltage at the input node.
- Inventors:
- Issue Date:
- Research Org.:
- OSRAM SYLVANIA Inc. Wilmington, MA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1377822
- Patent Number(s):
- 9748858
- Application Number:
- 13/629,710
- Assignee:
- OSRAM SYLVANIA Inc.
- Patent Classifications (CPCs):
-
H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
- DOE Contract Number:
- EE0000611
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2012 Sep 28
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 24 POWER TRANSMISSION AND DISTRIBUTION
Citation Formats
Palmer, Fred. Solid state light source driver establishing buck or boost operation. United States: N. p., 2017.
Web.
Palmer, Fred. Solid state light source driver establishing buck or boost operation. United States.
Palmer, Fred. Tue .
"Solid state light source driver establishing buck or boost operation". United States. https://www.osti.gov/servlets/purl/1377822.
@article{osti_1377822,
title = {Solid state light source driver establishing buck or boost operation},
author = {Palmer, Fred},
abstractNote = {A solid state light source driver circuit that operates in either a buck convertor or a boost convertor configuration is provided. The driver circuit includes a controller, a boost switch circuit and a buck switch circuit, each coupled to the controller, and a feedback circuit, coupled to the light source. The feedback circuit provides feedback to the controller, representing a DC output of the driver circuit. The controller controls the boost switch circuit and the buck switch circuit in response to the feedback signal, to regulate current to the light source. The controller places the driver circuit in its boost converter configuration when the DC output is less than a rectified AC voltage coupled to the driver circuit at an input node. The controller places the driver circuit in its buck converter configuration when the DC output is greater than the rectified AC voltage at the input node.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 29 00:00:00 EDT 2017},
month = {Tue Aug 29 00:00:00 EDT 2017}
}
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