TAS5756M Power vs PVDD at PBTL 6ohm

Hirokazu Takahashi

Expert 8420 points

Other Parts Discussed in Thread: TAS5756M

Dear Support team,

Do you have the data about output power vs PVDD at PBTL with 6ohm load?

If you have it, please share it with us.

Best regards,

Hiro Takahashi

over 8 years ago

0 Diego Melendez over 8 years ago

TI__Guru 57800 points

Hi, Takahashi-san,

Please refer to below plot.

Best Regards,

-Diego Meléndez López
Audio Applications Engineer

0 Hirokazu Takahashi over 8 years ago in reply to Diego Melendez

TI__Expert 8420 points

Hello Diego-san

Do these plots have any restriction by thermal performance?

The customer expects over 75W@6ohm, 24V with PBTL.

So, TAS5756M can’t achieve the target output.

Best regards,

Hiro Takahashi

0 Diego Melendez over 8 years ago in reply to Hirokazu Takahashi

TI__Guru 57800 points

Hi, Takahashi-san,

There is no thermal restriction on the plot I provided. The maximum power the TAS5756M can deliver is limited by the power supply and the current drive of the power stage. PBTL mode offers double current sourcing from the power supply, allowing the use of smaller loads (without thermal or overcurrent issues). Do you know why customer is expecting 75W from 24V power supply into 6 Ohm load?, this assumption seems quite unrealistic.

Best Regards,

-Diego Meléndez López
Audio Applications Engineer

0 Hirokazu Takahashi over 8 years ago in reply to Diego Melendez

TI__Expert 8420 points

Hello Diego-san

Thaks for your reply soon.

I'll suggest to reduce the load of speaker to customer, if they want more power.

Best regards,

Hiro Takahashi

Audio

Audio forum

TAS5756M Power vs PVDD at PBTL 6ohm