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Voltage generator switching between alternating, first and second voltage values, in particular for programming multilevel cells

  • US 6,424,121 B1
  • Filed: 11/15/2000
  • Issued: 07/23/2002
  • Est. Priority Date: 11/16/1999
  • Status: Expired due to Term
First Claim
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1. A voltage generator having an output terminal supplying an output voltage alternately switching between first and second values, said first values being greater than said second values, said voltage generator comprising:

  • a charge circuit and a discharge circuit both connected to said output terminal;

    a programmable circuit shared by said charge and discharge circuits and having a programmable electrical value correlated to said first and second values of said output voltage; and

    a control unit connected to said programmable circuit and modifying said electrical value on the basis of required values of said output voltage;

    wherein said charge circuit includes a voltage regulator generating said first and second values of the output voltage, and said discharge circuit includes discharge means connected to said output terminal and activated when said electrical value is modified from one of said first values to one of said second values.

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