Correction device of electronic charge pump and its method

Correction device of electronic charge pump and its method

  • CN 1,477,787 A
  • Filed: 08/23/2002
  • Published: 02/25/2004
  • Est. Priority Date: 08/23/2002
  • Status: Active Application
First Claim
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1. the means for correcting of a charge pump, wherein, this charge pump comprises one first current source and one second current source, this first current source and one first switch are connected to a first node, this second current source and a second switch are connected to a Section Point, and this first switch and this second switch are connected to one the 3rd node, when closing this first switch and this second switch simultaneously, this charge pump can be exported an output current from the 3rd node, the size of this output current and direction are by the one second electric current decision of one first electric current of this first switch of flowing through and this second switch of flowing through, and this means for correcting comprises:

  • One testing circuit is connected to the 3rd node with this charge pump, exports a detection signal in order to size and direction according to this output current;

    One current regulating circuit couples with this testing circuit, exports a correction signal in order to polarity and value according to the transfer ratio of this detection signal, to determine the corrective action of this charge pump;

    AndOne correcting circuit, couple with this current regulating circuit and this charge pump respectively, this correcting circuit is exported one first correcting current and one second correcting current respectively to this charge pump according to this correction signal, in order to regulate the size of this first electric current and this second electric current, make this output current reach minimum.

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