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High voltage generator

  • US 5,801,577 A
  • Filed: 12/11/1996
  • Issued: 09/01/1998
  • Est. Priority Date: 12/26/1995
  • Status: Expired due to Term
First Claim
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1. A circuit for generating a voltage having a peak amplitude that is greater than a voltage level of a supply voltage, comprising:

  • a network of capacitors having an output node; and

    a control circuit, for controlling a plurality of switching transistors having two modes of functioning, a first mode for isolating all the capacitors in the network and simultaneously charging them to the voltage level of the supply voltage, and a second mode for connecting all the capacitors in the network in series between the supply voltage and the output node of the network to instantaneously increase a voltage level of the output node to a voltage level that is greater than the voltage level of the supply voltage;

    wherein switching transistors that are placed between each capacitor in the network so as to connect all the capacitors in series are controlled by a first signal having a peak voltage that is greater than the voltage level to be switched to the output node of the network.

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