TPS7A94: Ferrite-bead to improve noise performance at 1 MHz

Part Number: TPS7A94
Other Parts Discussed in Thread: TPS7A96

Hi,

In data sheet to improve noise vs frequency performance at 1 MHz, it is suggested to use a Ferrite-bead Impedance = 49 @ 1MHz followed by a 1 uF capacitance. Can you please suggest some Ferrite bead suitable for this circuit?

The maximum output current for my application is 600 mA.

thanks,

6 months ago

0 Stephen Ziel 6 months ago

TI__Mastermind 34065 points

Hi NK,

In general we don't recommend specific passive components as we are not familiar with customer requirements such as cost targets, lead times, environmental conditions which may affect the tolerance, etc. One company that you may reach out to is Murata who manufactures ferrite beads and may be able to assist you further. In a reference design I am releasing soon on the TPS7A96, I am planning on using one of these components.

https://www.murata.com/en-us/products/productdata/8796738650142/ENFA0003.pdf

Thanks,

Stephen

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TPS7A94: Ferrite-bead to improve noise performance at 1 MHz