TAS2770: Can I use a ferrite bead instead of inductor on output

Russell Wetherley1

Part Number: TAS2770

Hello E2E,

I am curious, would there be any limitations to me using a ferrite bead on the output of the TAS2770 instead of an inductor? Assuming the ferrite can handle the current, any drawbacks?

This is a space constrained application so if a ferrite can be used, it would be very helpful.

Russell

over 4 years ago

0 Luis Fernando Rodriguez S. over 4 years ago

TI__Guru* 84915 points

Hi, Russell,

Yes, the ferrite bead can be used instead of the inductor as part of the output filter. I would recommend to take a look at this document for details. (It belongs to another device, but it works with all the Class-D solutions).

https://www.ti.com/lit/an/slaa581/slaa581.pdf

Best regards,
Luis Fernando Rodríguez S.

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TAS2770: Can I use a ferrite bead instead of inductor on output