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Process transmitter having a step-up converter for powering analog components

  • US 6,813,318 B1
  • Filed: 04/30/1999
  • Issued: 11/02/2004
  • Est. Priority Date: 04/30/1999
  • Status: Active Grant
First Claim
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1. A process transmitter, comprising:

  • a power regulator adapted to receive a power signal, the power regulator generating a first signal based on the power signal, the first signal having a first voltage;

    digital components electrically coupled to the power regulator to receive power from the first signal;

    a step-up converter electrically coupled to the power regulator to input the first signal and output a second signal having a second voltage that is larger than the first voltage;

    analog components electrically coupled to the step-up converter to receive power from the second signal; and

    a start-up circuit electrically coupled to the power regulator to receive the first signal and electrically coupled to the step-up converter to activate the step-up converter after the first voltage has surpassed a first threshold voltage.

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