LM4780 Bridged mode and single supply - diyAudio
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Old 12th July 2006, 08:05 PM   #1
ringo42 is offline ringo42  United States
diyAudio Member
Join Date: Jul 2006
Default LM4780 Bridged mode and single supply

I would like to build a circuit using an lm4780 in bridged mode using only a +24V supply(two 12V batteries). Does anyone happen to have a schematic handy? The data sheet shows how to build a single supply, and how to build a bridged, not not a combination of both.
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Old 12th July 2006, 09:58 PM   #2
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Join Date: Jul 2006
Location: Edinburgh
I'm not sure if you can do it on fashion of the single supply example on the datasheet, really don't know.

One way is to use a boost SMPS to get it up to 48 then split it, having said that i have no idea what effect that will have on an audio amp, i've used it for other applications a lot of times.

You can get up to 93% efficiency. The actual circuit is quite simple.
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