Replacing TDA2030a with TDA2050 in parallel - diyAudio
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Old 9th March 2007, 05:30 PM   #1
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Default Replacing TDA2030a with TDA2050 in parallel

I've built the tda2030a bridged circuit in the datasheet, and i was wondering if i can replace them with TDA2050a to make it sound louder? using a higher voltage of course that is
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Old 10th March 2007, 02:50 AM   #2
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ok i replaced them and it worked. What i'd like to know now is that if i should raise the voltage supply to get more power, i mean, with tda2030 the circuit uses 16+16v, should i use more with the tda2050's? what voltage should i use? the ic's max?
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Old 10th March 2007, 09:13 AM   #3
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Depends on the load impedance for 8 ohms you should be able to get the magic 100W with +/-22v supply but for a 4 ohm load you should use +/-18v to get 100W
I would not run them for long at that level because the To220 package does not have the area to get rid of the heat easily!
One way around this is to build the "superbridge" in the TD2030A data sheet which has booster transistors that take some of the power dissipation.
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Old 10th March 2007, 06:08 PM   #4
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Just found this application on the ST site (makers of the TDA2050)
Unfortunately it does not list that device but if you select TDA7265 which is approx 2 Tda2050's on the same chip but bigger area package you can get an idea of the dissipation problem

http://www.st.com/stonline/products/...in/audpowl.htm

Application needs java to run
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Old 16th March 2007, 02:52 AM   #5
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i used the high power circuit in hte datasheet but replaced the tda2030 with tda2050 and i use 30v+0v+30v trans. max it up 130w..
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