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CONTROL DEVICE AND CONTROL METHOD

  • US 20180294734A1
  • Filed: 04/04/2018
  • Published: 10/11/2018
  • Est. Priority Date: 04/10/2017
  • Status: Active Grant
First Claim
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1. A control device, applied to a flyback converter, the flyback converter comprising an auxiliary switch, the control device comprising:

  • an on-time setter, configured to set an on-time threshold according to a reference value and an output voltage of the flyback converter; and

    an on-time controller, configured to output a control signal to turn on the auxiliary switch, and to turn off the auxiliary switch when on-time of the auxiliary switch reaches the on-time threshold.

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