TPA3110D2: Will TPA3110's Inrush Current Damage Speaker on SD# ON/Off for Long Run?

Wayne Chen (Audio AE)

Part Number: TPA3110D2

Hi Sirs,

Is there a protection mechanism with the TPA3110 to avoid speaker damage from inrush current on SD# ON/Off for long run?

Thank you and Best regards,

Wayne Chen
03/22/2019

over 6 years ago

0 Dylan Yao over 6 years ago

TI__Genius 10190 points

Wayne,

Matthew will follow up with you soon.

Dylan

0 Matthew Miao over 6 years ago

TI__Expert 6720 points

Hi Wayne,

TPA3110 has OC protection to avoid high current through FET to protection chip and speaker.

SD ON/OFF current is the step response of external L/C/speaker network. If customer speaker is sensitive for current damage, could they use large inductor to avoid this peak current?

what's more, maybe you can also consider to use PLIMIT function.

Rdgs,
Matthew

0 Wayne Chen (Audio AE) over 6 years ago in reply to Matthew Miao

TI__Genius 15950 points

Thank you for your advise, Matthew. We will be checking if customer can use LC filter design and get yo back shortly. We can use PLIMIT function as wwll...Wayne Chen

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TPA3110D2: Will TPA3110's Inrush Current Damage Speaker on SD# ON/Off for Long Run?