Does power supply to modules affect performance?

[SuSh_1535366]

Hello,

We are considering DC/DC(switching) power supply for BLE module(CYBLE-222014-01).

Does the switching frequency of the power supply affect the performance of the BLE module?

If there is a performance impact, which switching frequency should I choose?(500kHz, 1MHz, 4MHz...)

Thanks,

Shimamura

[Takashi_M · Accepted solution]

Generally, it should be considered to use switching DC/DC, especially for switching frequency.

it would affect to noise on power line and also the performance as total system.

so, it shall be recommended to use Linear regulator, instead of switching regulator.

Just for your reference:

AN88619 - PSOC 4 HARDWARE DESIGN CONSIDERATIONS

AN2155 - PSoCR EMI Design Considerations

AN80994 - Design Considerations for Electrical Fast Transient (EFT) Immunity