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MAGNETIC SENSING SCHEME FOR VOLTAGE REGULATOR CIRCUIT

  • US 20190312513A1
  • Filed: 06/25/2019
  • Published: 10/10/2019
  • Est. Priority Date: 06/25/2019
  • Status: Active Grant
First Claim
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1. A voltage regulator circuit comprising:

  • a pull-up transistor coupled between an intermediate node and a supply rail that is to receive an input voltage;

    a pull-down transistor coupled between the intermediate node and a ground terminal;

    a first inductor coupled between the intermediate node and an output node to provide a regulated output voltage at the output node;

    a second inductor having a first terminal coupled to the first inductor at a tap point between terminals of the first inductor, wherein the second inductor is magnetically coupled to the first inductor, and wherein the second inductor is to provide a sense voltage at a second terminal of the second inductor; and

    a control circuit to receive the sense voltage and to control the pull-up transistor and the pull-down transistor based on the sense voltage.

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