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UCC2808A-2: UCC2808A-2 error amplifier open loop gain test

Prodigy 20 points

Replies: 3

Views: 416

Part Number: UCC2808A-2

Hi,

My problem is ucc2808a2's error amplifier open loop gain test.  Somewhere between  0.35 and 1.2 volts on the COMP pin. you will start to get pulses. at the comp voltage increases the pulse widths will get larger. Beacuse of the pulse,I can't test the  error amplifier open loop gain.

How can I test the gain?

3 Replies

  • Hi,

    I have asked one of our applications engineers to answer your post. You should see a response shortly.

    Regards

    Peter

  • The error amplifier open loop gain is given in the page 3 of the datasheet which is 80dB(typically). Meanwhile, Figure 6 shows error amplifier Gain And Phase Response VS Frequency.
     Thank you for clicking Verify Answer below if this answered your question!
  • In reply to Oliver Pan91:

    I see this, but I am a test engineer, my job is making sure chip's every parameter is corret. So I must test it.

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