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DC-DC Buck Input Noise Filter

Other Parts Discussed in Thread: TPS62746

Hello,


I am looking to design a PCB with a DCDC buck converter (probably something like the TPS62746) with a switching frequency of ~1MHz in CCM (kHz in DCM).  The supply input of the DCDC converter will be shared with multiple 3.3V devices.  I am trying to figure out the best way to isolate these devices using the same 3.3V node.  I have looked at ferrite beads, but for frequencies this low they don't seem to be the right solution.

Any suggestions or recommendations on how to isolate the other 3.3V components from the switching frequency noise on the input supply of the DCDC?

Best Regards,

Adam