• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 99 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC2804: Load

Engineer
Prodigy 30 points
Part Number: UCC2804


Tool/software:

Is there a minimum load required on the secondary? Does this controller utilize a pulse or skip mode to avoid the output voltage from ramping too high at low currents? Or does it lower the duty cycle to 0%? How do I determine what the minimum load required is to ensure the output voltage will not creep up? 

Thank you.

  • 0
    TI__Expert 8578 points

    Hi,

    Engineer said:
    Is there a minimum load required on the secondary?

    No.

    Engineer said:
    Does this controller utilize a pulse or skip mode to avoid the output voltage from ramping too high at low currents? Or does it lower the duty cycle to 0%? How do I determine what the minimum load required is to ensure the output voltage will not creep up? 

    There's no intended power skipping, it's natural reaction from IC. The regulation is based on FB pin voltage, when it reaches 2.5V and higher, then there will be no pulses from the OUT pin.

    Best,

    Pratik A.