TPA3255: Input 10Hz will activate the protection

Kevin Huang8

Part Number: TPA3255

Hi Team,

When the speaker (SUB) is connected and the input is 10Hz, the TPA3255 will activate the protection (Fault to
LOW), do you have any suggestions for improvement?

over 2 years ago

0 Luis Fernandes de Pina over 2 years ago

TI__Genius 15200 points

Hello Kevin,

At what output power and how long are you outputting the 10Hz signal? Can you provide a schematic for your system.

best regards,
Luis

0 Kevin Huang8 over 2 years ago in reply to Luis Fernandes de Pina

Genius 4706 points

0 Shadow He over 2 years ago in reply to Kevin Huang8

TI__Guru 51840 points

Hi Kevin

What is the status of CLIP_OTW pin? If it is high, most possible OC happens. Please check what is the highest power right now, and see if it is the output inductor satiated.

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TPA3255: Input 10Hz will activate the protection