Power converter with power switch operable in controlled current mode
Number of patents in Portfolio can not be more than 2000
United States of America
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May 1, 2012
Issued Date -
N/A
app pub date -
Mar 5, 2010
filing date -
Mar 5, 2010
priority date (Note) -
Withdrawn
status (Latency Note)
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Abstract
A power converter and method of controlling a power switch therein to improve power conversion efficiency at low output current. In one embodiment, the power converter includes a first power switch coupled to a source of electrical power and a second power switch coupled to the first power switch and to an output terminal of the power converter. The power converter also includes a controller configured to alternately enable conduction of the first and the second power switches with a duty cycle in response to an output characteristic of the power converter. The controller is configured to control a level of current in the first power switch when the second power switch is substantially disabled to conduct.
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