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METHOD FOR MEASURING CHARGE PUMP OUTPUT CURRENT

  • US 20070069714A1
  • Filed: 09/27/2005
  • Published: 03/29/2007
  • Est. Priority Date: 09/27/2005
  • Status: Active Grant
First Claim
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1. A method for measuring output current (Iout) of a charge pump, the method comprising:

  • providing a charge pump comprising a plurality of n charge pump stages, wherein an output of stage n−

    1 (Von-1) is output to stage n, an output voltage of stage n being referred to as charge pump voltage output Vout;

    connecting an additional output pass device to the output of stage n−

    1, an output voltage of said additional output pass device being referred to as Voutm;

    forcing Voutm to be at least approximately equal to Vout;

    drawing at least one of output voltage (Voutm) and output current (Ioutm) from the additional output pass device;

    measuring Ioutm; and

    correlating Iout with Ioutm.

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