AVR450 max output voltage?

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The_village_idiot
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Posted by The_village_idiot: Tue. Jan 1, 2008 - 04:41 AM
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I read through the application note, and read through most of the threads that pop up with AVR450 as the only keyword, but I'm still not clear about the maximum output voltage for this design. I need to be able to charge a 10 cell 3800+ mah nimh battery pack (nominal 12 volts). It looks like the At90 side might do what I need and that the ATtiny side is only good for a couple of cells.

Anyone have any insite into this?

Thanks.

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AVR Microcontrollers, megaAVR and tinyAVR
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Corwin
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Posted by Corwin: Tue. Jan 1, 2008 - 11:30 AM
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avr450, part 3.3.1, max. charge voltage is 12.1V
part 3.3.2, max. charge current, max 2.0A

also have a look at avr451, it has output 1.2V to 38V, max 5A (sure more complicated circuit, but more functionality)

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The_village_idiot
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Posted by The_village_idiot: Tue. Jan 1, 2008 - 08:23 PM
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Thanks, I thought I saw something around 12v but thought I'd better check with people that have built it. I'll do more reading on the AVR451.

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Bronze Marktheusch
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Posted by theusch: Tue. Jan 1, 2008 - 11:35 PM
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Quote:

I thought I saw something around 12v but thought I'd better check with people that have built it

??? What does a citation from the document have to do with whether Corwin built it or not?

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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The_village_idiot
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Posted by The_village_idiot: Wed. Jan 2, 2008 - 12:00 AM
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Nothing, that's why I'm hoping that a few of the people who built it or similar will speak up.

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