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Old 12th July 2011, 01:24 AM   #1
Hendot is offline Hendot  Australia
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Default 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?
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Old 13th July 2011, 09:53 PM   #2
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Absolutely no!
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Old 14th July 2011, 01:44 AM   #3
Hendot is offline Hendot  Australia
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Join Date: Jul 2011
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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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