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Dynamic current-limit circuit

  • US 9,772,639 B2
  • Filed: 09/25/2015
  • Issued: 09/26/2017
  • Est. Priority Date: 03/05/2015
  • Status: Active Grant
First Claim
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1. A comparator circuit which is configured to provide a control current and a control voltage based on a first input voltage and a second input voltage, the comparator circuit comprisingan input amplifier configured to generate an output signal based on a delta voltage which corresponds to a difference between the first input voltage and the second input voltage;

  • offset means configured to generate a first offset;

    a first output circuit configured to generate the control current based on the output signal and based on the first offset; and

    a second output circuit configured to generate the control voltage based on the output signal and not based on the first offset;

    wherein the second output circuit is configured to generate the control voltage such that the control voltage exhibits a swing from a first potential to a second potential at a first delta voltage; and

    wherein the first output circuit is configured to generate the control current such that the control current is substantially linear for delta voltages within a pre-determined interval around the first delta voltage.

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