Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2005-12-13
2005-12-13
Sterrett, Jeffrey (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
Reexamination Certificate
active
06975098
ABSTRACT:
A Factorized Power Architecture (“FPA”) method and apparatus for supplying power to highly transient loads such as microprocessors includes a front end power regulator (“PRM) which provides a controlled DC bus voltage which is converted to the desired load voltage using a DC voltage transformation module (“VTM”) at the point of load. The VTM converts the DC bus voltage to the DC voltage required by the load using a fixed transformation ratio K=Vout/Vinwhere Vin>Voutand with a low output resistance. The response time of the VTM, TVTMis less than the response time of the PRM, TPRM. A first capacitance, C1, across the load is made large enough to support the microprocessor current requirement within a time scale, T1, which is preferably greater than or equal to the characteristic open-loop response time of the VTM by itself, TVTM. A second capacitance, C2, at the input of the VTM is made large enough to support the microprocessor current requirement within a time scale, T2, which is preferably greater than or equal to the closed-loop response time of the front end power regulator, TPRM. Feedback may be provided from a feedback controller at the point of load to the front end or to upstream, on-board power regulator modules (“PRMs”) to achieve precise regulation. The VTM may convert power bi-directionally to return power to the bus during a “load dump.” Energy storage at the input to the VTM is greater than energy storage at the load.
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Sterrett Jeffrey
VLT, Inc.
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