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Microcontroller architecture for power factor correction converter

  • US 10,437,317 B2
  • Filed: 04/02/2018
  • Issued: 10/08/2019
  • Est. Priority Date: 04/15/2016
  • Status: Active Grant
First Claim
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1. A circuit for driving a motor of a compressor, the circuit comprising:

  • a microcontroller configured to generate a reference current value for a power factor correction (PFC) converter; and

    a programmable logic device configured to;

    receive control messages from the microcontroller;

    in response to receiving a first control message from the microcontroller, set a value into an off-time register based on data in the first control message;

    control a power switch of the PFC converter to turn off in response to receiving a comparison signal indicating that a measured current in the PFC converter exceeds the reference current value; and

    subsequent to controlling the power switch to turn off, wait for a period of time determined by the off-time register before controlling the power switch to turn on.

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