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Old 3rd January 2010, 01:20 PM   #1
johnr66 is offline johnr66  United States
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Default Stereo power amp, 24 volt supply

Hi,
I'm looking for a chip amp that meets the following:
powered from a 24 volt (single) supply.
2 Channel
Ability to drive 4 Ohm loads.
low part count to keep costs down
fixed gain preferable (less parts)
Single ended (no BTL)

I'm thinking like a TDA1517, but with higher voltage supply that means higher power output.

Thanks!
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Old 3rd January 2010, 01:49 PM   #2
wahab is offline wahab  Algeria
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TDA2040 will do it perfectly...just don t forget to add two 1N4004
(in reverse mode of course) from the amp pin output (pin 4) to supply rails
if you are to use this single power supply..
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Old 3rd January 2010, 01:53 PM   #3
sexya is offline sexya  India
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hii
with that 24volt single rail , i would suggest TPA3122 , dip16 package, Class D , simple to use and good out put 15 watt per channel , no heatsink requirements and single side board design,
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Old 4th January 2010, 03:36 PM   #4
johnr66 is offline johnr66  United States
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Thanks for the replies. I'll probably try a class D in another project, but want analog for now.

Why clamping diodes on the TDA2040 in single supply, reduced power use?
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Old 4th January 2010, 04:30 PM   #5
sexya is offline sexya  India
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noo its to do something with keep ing output capacitors charged or preventng dc from causing loud pops when powerd on , nothing for efficency jst safty and stabilty
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