TAS5731M: When it is in PBTL mode for subwoofer, it is easy to damage

aggil liang

Part Number: TAS5731M

Hi Team

When TAS5731M is in PBTL mode for subwoofer, it is easy to damage. The PVDD is 24V, the load is 4ohm, and the auido source is 50`200Hz..The schematic and cfg file as below. pls. help. thanks

PS: BTL for the tweeter is normal.

woof_setting_20190325.cfg

Safed Main pcb sch V3 20190223.pdf

over 5 years ago

0 Xiaolin Qin over 5 years ago

TI__Expert 6295 points

hello,
what is BST CAP used in your case?

Regards
Linda

0 aggil liang over 5 years ago in reply to Xiaolin Qin

Expert 2660 points

Hi
33nf.
By the way, i heard that it need to rewrite the 0X10 register when the PVDD is above 18V in PBTL mode for woofer. And there is a file to guide this. Can you share the corrigenda to us ? thanks

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TAS5731M: When it is in PBTL mode for subwoofer, it is easy to damage