Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2007-05-14
2010-12-21
Patel, Rajnikant B (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
Reexamination Certificate
active
07855539
ABSTRACT:
A circuit includes a power converter configured to receive an input voltage and generate a regulated output voltage. The power converter includes an inductor. The circuit also includes a control loop configured to dynamically adjust a valley current limit of the power converter. The valley current limit identifies a minimum current through the inductor during a current-limited mode of operation. The regulated output voltage could be provided to a load configured to operate using the regulated output voltage. The control loop could be configured to dynamically adjust the valley current limit based on an average current through the inductor. The control loop could also be configured to dynamically adjust the valley current limit so that an output current reaches a desired average value during the current-limited mode of operation. The power converter could represent a buck converter, a boost converter, a buck-boost converter, or a hysteretic control power converter.
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Man Tze-Kau
Wong Lik-Kin
National Semiconductor Corporation
Patel Rajnikant B
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