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

user3812683

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?

over 7 years ago

0 Peter Meaney over 7 years ago

TI__Mastermind 31580 points

Hi,

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

Regards

Peter

0 Oliver Pan91 over 7 years ago

TI__Intellectual 2230 points

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.

0 user3812683 over 7 years ago in reply to Oliver Pan91

Prodigy 20 points

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