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Level shift circuit

  • US 9,900,009 B2
  • Filed: 08/25/2015
  • Issued: 02/20/2018
  • Est. Priority Date: 10/01/2014
  • Status: Active Grant
First Claim
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1. A level-shift circuit for IC for transmitting a signal from a primary potential side to a secondary potential side different from the primary potential side, comprising:

  • a first serial circuit including a first resistance serially-connected to a first switching element, wherein the input of the first switching element is a first input signal for turning ON or OFF the first switching element, and a connecting point of the first resistance and the first switching element acts as an output terminal;

    a second serial circuit including a second resistance serially-connected to a second switching element, wherein the input of the second switching element is a second input signal for controlling the ON/OFF of the second switching element, a connecting point of the second resistance and the second switching element acts as an output terminal, and the first input signal and the second input signal are not simultaneously turned ON;

    a latch circuit for changing a status depending on the output of the output terminal of the first serial circuit and the output of the output terminal of the second serial circuit;

    a first capacitor connected between the output terminal of the first serial circuit and the output terminal of the second serial circuit; and

    one or more additional capacitors parallelly connected to the first capacitor,wherein the first capacitor and the one or more additional capacitors have a different frequency characteristic, respectively.

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