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INTEGRATION OF SWITCHED CAPACITOR NETWORKS FOR POWER DELIVERY

  • US 20090322414A1
  • Filed: 06/30/2008
  • Published: 12/31/2009
  • Est. Priority Date: 06/30/2008
  • Status: Active Grant
First Claim
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1. A multi-stage power delivery network to deliver power to an integrated circuit (IC), the network comprising:

  • a switched capacitor divider (SCD) stage comprising;

    a series switch module including a plurality of FETs configured in series with drain terminals coupled with source terminals, the series switch module being connected across an input voltage and having a plurality of pinouts coupled with the plurality of FET drain terminals; and

    a plurality of capacitors, external to the series switch module, connected across the voltage input and coupled with the plurality of drain pinouts, ones of the plurality of capacitors to be switched by the plurality of FETs to reduce the input voltage to a first stage output voltage; and

    a buck-type voltage regulator (VR) stage to convert the first stage output voltage to a second stage output voltage lower than the first stage output voltage.

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