frequency and inductors

[Sergey_Kolen]

Hi,

1. what the DC2DC switching frequency of nRF52832?

2. at nRF52840 the inductor should be  10uH with tolerance +-10% but for nRF52832 this inductor can be with tolerance +-20%  ??

3. for nRF52832 the second inductor (serial inductor to 10uH inductor)  should be a 10nH or 15nH ?

[ketiljo]

1. The DCDC switching frequency is 8 MHz

2. Both have 20 % stated in the product specification. 

3. The smallest inductor is 15 nH.

[Sergey_Kolen]

Dear Ketijo,

please verify that inductor 10uH may be with 20% tolerance, because the previous answer from another support man was that requirement is 10% :

so what is the right 10% or 20% ?

[ketiljo]

20 % is what's stated in the datasheet(s). I just checked, and this is what we recommend.

[ketiljo]

Just for clarification, this is the 10 µF inductor, L2 in the reference schematics

[Sergey_Kolen]

hi,

please send me a link to page on datasheet with this info.

thanks