UC3845 - voltage feedback comparator speed (pin 2)?

MacIntoshCZ said:

It is. Do you think its good combo to have 500khz current sense comparator and 10khz voltage feedback comparator?

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Do you think its good combo to have 500khz current sense comparator and 10khz voltage feedback comparator?

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ronsimpson said:

I don't understand the question. The error amp has a unity bandwidth of 1mhz. The current comparitor has a 150nS delay.
In normal operations the error amp has Rs and Cs around it to slow it down.
The current compar function normally has a RC to remove fast spikes. (maybe 100nS)

The error amp should take 10s to 100s of cycles to move the voltage. The current sense needs to work in a small fraction of a cycle.

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