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AssigneeDell Products L.P.
InventorsKejiu Zhang, Shiguo Luo
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Disclosed herein are embodiments of an improved switching regulator and a method for controlling a switching regulator, for example, to meet stringent transient demand and high efficiency requirements over wide operating range without impacting system stability. According to one embodiment, the switching regulator may be a voltage regulator comprising a plurality of voltage regulator phases, each phase comprising a power stage operable to produce an output voltage for a transient load, and a driver stage coupled for driving the power stage based on a modulated input signal supplied to the driver stage. A variable inductor is included within the power stages in order to meet stringent transient demand and high efficiency requirements over a range of load conditions and operating set points. A power controller is coupled for controlling the modulated input signals supplied to the driver stages to compensate for changing output filter characteristics when the inductance of the variable inductors changes with changes in the load current.
A voltage regulator, comprising:
A method for controlling a voltage regulator comprising a plurality of voltage regulator phases coupled for producing an output voltage for a transient load, wherein each voltage regulator phase comprises a driver stage and a power stage, wherein each power stage comprises a variable inductor whose inductance changes with changes in load current, and an output filter coupled between an output of the voltage regulator phases and the transient load, wherein the output filter comprises the variable inductors included within the power stages and at least one capacitor, the method comprising:
An information handling system, comprising:
Dependencies are inferred from the claim text.