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-   -   Topping TP20 mk2 5v (http://www.diyaudio.com/forums/class-d/192464-topping-tp20-mk2-5v.html)

Hendot 12th July 2011 02:24 AM

Topping TP20 mk2 5v
 
I am about to attempt a project of adding airport expess internals to a Topping TP20 amp. I was hoping to power the airport by soldering a few wires to the amp. It requires 5v and 3.3v.
I notice that the ta2020 chip has a few 5V pins. Would it be possible to pull some power from here to run the airport express, or would this cause problems? I have done a bit of searching and reading datatsheets but haven't found the answer. Can somebody shed some light on this?

celona 13th July 2011 10:53 PM

Absolutely no!

Hendot 14th July 2011 02:44 AM

I'm thinking now I will get a cheap pico psu from eBay to covert the 12V supply to the 3.3v and 5v required.
I could even use the regulated 5v from the pico psu to supply the 5v pins on the ta2020.


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