topic Re: TDA8950 Amplifier IC in Other NXP Products

TDA8950 Amplifier IC

vinay8003 — Wed, 06 Mar 2024 07:00:18 GMT

We used TDA8920(2x110W) Audio Amplifier IC with +-30V SMPS.

Input- 1v (Sine Wave)

Output- 20V (Sine Wave) after filer

Problem:- Now this IC is not available in market so I want to use alternate IC TDA8950J.

Question:- Can I use TDA8950J (2x150W) with same SMPS +-30V/6A.

Output draw power from Amplifier IC – 5A Peak(for 150ms) x 20V = 100W, 3.5A (average)x20= 70 to 80W.

Re: TDA8950 Amplifier IC

vinay8003 — Wed, 06 Mar 2024 11:12:54 GMT

Re: TDA8950 Amplifier IC

diazmarin09 — Wed, 06 Mar 2024 21:06:51 GMT

Hello vinay8003,

I hope all is great with you. Thank you for using the NXP communities.

In my opinion, the device can be useful for you with the parameters mentioned above.

Please note that the TDA8950J device is obsolete as well.

I hope this information helps.

Regards,

David

Re: TDA8950 Amplifier IC

vinay8003 — Sun, 17 Mar 2024 06:42:10 GMT

NOW I have +-30V/6Amp+- SMPS for ic supply i will use 3 IC for 6 signal generate 3 Signal i will give in voltage transformer and Three signal i will give in Current transformer like phantom.

One ic one channel generate 1 phase voltage and other phase current example- R phase voltage or Y phase current my voltage transformer is step-up which convert 20v to 300V phantom transformer 20V to 100 Amp.

So my question is my phantom transformer is draw 4Amp current and my voltage transformer draw 3.2 peak for 160ms and 2Amp regular current from one IC. total we have 3 IC RYB phase same current draw than how i can calculate SMPS current rating.

Now my 6Amp+- output current smps is ok for these 3 IC or not?

Please tell me SMPS power supply for 3 IC current rating.