TPA3245: Is possible to put two or more TPA32XX in PBTL parallel.

Francesc Pages

Part Number: TPA3245

Is possible to put two or more TPA32XX in PBTL parallel. I Know that is possible to use multplie devices syncronized, but I need to Know that if I can drive a speaker less than 1 ohm if we put two or more units in parallel.

Thanks a lot.

over 5 years ago

0 Andy Liu (BMS) over 5 years ago

TI__Guru 52115 points

We will take a look and then get back to you.

0 Robert Clifton56 over 5 years ago in reply to Andy Liu (BMS)

TI__Mastermind 20770 points

Hi Francesc,

At one point we actually did test to see if it was possible to run two of our devices feeding the same speaker. Unfortunately we concluded you can't. The biggest problem is balancing between the devices. The slight variations (on atomic scale) between the FETs will cause one of them to take on the majority of the current and thus damage them.

So long answer short, you cannot.

Best Regards,
Robert Clifton

0 Francesc Pages over 5 years ago in reply to Robert Clifton56

Prodigy 40 points

Thanks a lot, for the prompt answer

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TPA3245: Is possible to put two or more TPA32XX in PBTL parallel.