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Apparatus and method for adaptively controlling power supplied to a hot-pluggable subsystem

  • US 6,917,504 B2
  • Filed: 05/02/2001
  • Issued: 07/12/2005
  • Est. Priority Date: 05/02/2001
  • Status: Expired due to Fees
First Claim
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1. A power supply circuit for detachably coupling a hot-pluggable subsystem, wherein said power supply circuit comprises:

  • a power supply output for supplying power to a load;

    a pass device coupled to said power supply output for controlling said supplied power; and

    a control circuit coupled to a gate of said pass device, wherein said control circuit detects a gate voltage of said pass device and controls said pass device in conformity with said gate voltage, wherein said control circuit samples and holds a representation of a current required to produce said gate voltage, and wherein said current representation is used subsequently to control said pass device.

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