Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2007-11-08
2009-11-10
Laxton, Gary L (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S225000, C323S285000
Reexamination Certificate
active
07615974
ABSTRACT:
The invention relates to a method and an apparatus for controlling average current by pulse modulating an output current. The apparatus includes a constant-on-time switching regulator. During the pulse modulation on-time, an output voltage is regulated at a level corresponding to a defined value of a corresponding output current. A control signal is provided to indicate an adjustment to the output voltage that enables regulation of the output current to the defined value. During the pulse modulation off-time, the output voltage is maintained at the level that substantially corresponds to the defined value of the output current during the pulse-modulation on-time.
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Darby & Darby P.C.
Gaffney Matthew M.
Laxton Gary L
National Semiconductor Corporation
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