TPS53667EVM-769: CSD95490 EN_FCCM pin RC filter

K. Sasaki14

Guru 10200 points

Part Number: TPS53667EVM-769
Other Parts Discussed in Thread: TPS53667

On the TPS53667EVM, each CSD95490 EN_FCCM pin has 10k ohm and 1nF RC filter.
Is this filter necessary for each device?

Is it possible to make this filter common as the attached file?

TPS53667_CSD95490 EN connection.pdf

Best Regards,
Kohei Sasaki

over 6 years ago

0 Carmen Parisi over 6 years ago

TI__Expert 4060 points

Hi Kohei,

I don't know about that exact configuration but, assuming you don't need the converter to run in DCM, the EN/FCCM pin can be tied directly to the VDD pin of that power stage. This saves both the components and having to route 3.3V from the controller to the power stages.

Thanks,

Carmen

0 K. Sasaki14 over 6 years ago in reply to Carmen Parisi

Guru 10200 points

Carmen-san,

Thank yo for your reply.
I understood EN/FCCM RC filter is not required for each device. And the filter is not must, it is option circuit.

Best Regards,
Kohei Sasaki

Power management

Power management forum

TPS53667EVM-769: CSD95490 EN_FCCM pin RC filter