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Original question:

UCC28070: About GDA and GDBpin(Additional question)

UCC28070: UCC28070: About GDA and GDBpin(Additional question)

Masazumi Ishii
Genius 3945 points
Part Number: UCC28070

Hello

thank you for your answer.

I have additional questions.

Q1
Answer: 1 pulse output is not a problem because the pulse width is narrow.

What is the maximum pulse width that does not matter? (How long does the short pulse width extend?)

Q2
Inquired on March 28th, 
e2e.ti.com/.../2914995

we made an inquiry regarding Q3 of the attached document.
I have not received an answer.

Thank you.

3808.UCC28070-3 (3).pdf

  • 0
    TI__Expert 3460 points

    Dear Masazumi,

     I am very pleased hear from you again.

    I think your concern is why the GDA/GDB output is deferent at some condition.

    accuracy, there are separate PFC power stage circuit, two separate current loops, Different current sampling. so it  is normal if the output is different.

    thanks