×

Fast voltage level shifter circuit

  • US 9,917,587 B2
  • Filed: 12/22/2016
  • Issued: 03/13/2018
  • Est. Priority Date: 01/27/2010
  • Status: Active Grant
First Claim
Patent Images

1. A circuit comprising:

  • a first circuit portion comprising a first switch and a resistor and configured to produce, responsive to an input voltage to a control input of the first switch, an output voltage by passing current through the resistor and the first switch;

    a second circuit portion comprising a second switch and configured to draw, responsive to a control input of the second switch, the current through the first switch and the resistor; and

    a third circuit portion comprising a charge storage device and configured to discharge into the control input of the second switch, responsive to the input voltage, a charge stored in the charge storage device, wherein the third circuit portion is configured to control the second circuit portion to decrease, in response to the input voltage being unchanged, the current through the first switch and the resistor.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×