TPA3116D2: Can tpa3116d2 achieve 70W output?

2018

Part Number: TPA3116D2

Can tpa3116d2 achieve 70W output?

How do I need to set it?
Why can't I achieve 70W when I use 21V power supply? What's the reason? What needs to be adjusted?
What is the peripheral circuit of pin 6-8 of IC?

over 5 years ago

0 Matthew Miao over 5 years ago

TI__Expert 6720 points

Hi,

What's your output load configuration, BTL or PBTL, 4/6/8 ohm load?

Another point is the output power definition should be together with THD level? For example, 21V for 4ohm load, the PVDD clipping (~1% THD) is going to happen around ~50W. With this setting, it couldn't achieve 70W output power.

Regards,

Matthew

0 Yanming Gong over 5 years ago

TI__Mastermind 19840 points

Hi,

TPA3116 can not achieve 70W even at 2 ohm load@PVCC=21V. Because TPA3116 OC current threshold is 7.5A, using 2ohm load@ 21V will trigger OC fault.

I suggest TPA3156 device for your application.

Regards,

Derek

0 Yanming Gong over 5 years ago in reply to Yanming Gong

TI__Mastermind 19840 points

If using TPA3116, I suggest PBTL mode for 70W power.

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TPA3116D2: Can tpa3116d2 achieve 70W output?