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Old 27th November 2003, 03:09 PM   #1
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Default My TDA7293 project... please help

Hi everyone,

I need your help again guys. I am designing a pcb for the TDA7293 chipamp and I have a few questions so far.... (I don't want to end up burning the chip)

In the schematic,
1. What is the working voltage of C5 (22uf Bootstrap Capacitor)
2. How do I implement the use pin 5 (Clip Detect)?

Planned psu is +/-50V @ 10A.

Thank you in advance!

Regards,
JojoD
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Old 27th November 2003, 03:12 PM   #2
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Default Schematic

Schematic Diagram that I use for evaluation/prototype from the datasheet.
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Old 27th November 2003, 04:20 PM   #3
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Hi!

Take a look at this document (in German, but the circuit and PCB details might be very helpfulk):

A100 TDA7293 amp

According to this, and the parts description on Schuro.de, you should use a 25V - 63V cap for C5 (C7 in the A100 circuit).

I cannot help you with clipping detection, since the designer of the A100 chose to omit it...

Hope this helps,

Arndt
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Old 28th November 2003, 02:02 AM   #4
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thanks!
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