MIPI-DSI immunity to switching noise?

[ricko_uk]

Hi,
because of PCB layout constraints I have to place a synchronous-type switching regulator (24V in to 3V3 out running at 2A) next to the MIPI-DSI connector.

The inductor is fully shielded and all the power-path traces are as short as they can be (literally 2-3 mm long).

How immune is MIPI-DSI to switching noise? Is it ok to place the switching regulator right next to it?

Thank you

[uer166]

Looks like they're ~50 Ohm SE impedance diff pairs, so the usual applies:

Don't cross GND slots, reduce crosstalk by keeping the offenders away by 5-10 prepreg heights, either don't flood top layer with GND, or if you do, stitch it every 1/10th wavelength of the signal in question, etc etc.

It doesn't seem particularly sensitive, just like most high-speed controlled impedance interfaces.

[ricko_uk]

Thank you @uer166

[Pbtz]

In my experience MIPI is fairly robust in general. I've made it work over 10-inch bodge wire.

[ricko_uk]

Thank you Pbtz.

At what speeds did you do that?