Replacing TDA2030a with TDA2050 in parallel

hernanstafe · 9th March 2007, 04:30 PM

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

hernanstafe · 10th March 2007, 01:50 AM

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?

consort_ee_um · 10th March 2007, 08:13 AM

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.

consort_ee_um · 10th March 2007, 05:08 PM

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

Galexjav · 16th March 2007, 01:52 AM

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..

9th March 2007, 04:30 PM	#1
hernanstafe diyAudio Member Join Date: Feb 2007 Location: Argentina	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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10th March 2007, 01:50 AM	#2
hernanstafe diyAudio Member Join Date: Feb 2007 Location: Argentina	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?

10th March 2007, 08:13 AM	#3
consort_ee_um diyAudio Member Join Date: May 2004 Location: Hertfordshire	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.

10th March 2007, 05:08 PM	#4
consort_ee_um diyAudio Member Join Date: May 2004 Location: Hertfordshire	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

16th March 2007, 01:52 AM	#5
Galexjav diyAudio Member Join Date: Dec 2006	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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