You probably know this since you are inquiring about the magnetic fields from
the inductor, but and vias in the PSU area carrying high currents can couple to
your high speed signals. There was a very good paper on this point from
DesignCon a few years ago.
Chris Mulvey
Principal Hardware Engineer
Curtiss-Wright
20130 Lakeview Center Plaza, Suite 200, Ashburn, VA 20147
T: 703.840.6709
v_cmulvey@xxxxxxxxxxxxxxxxx | www.curtisswrightds.com
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On ;
Behalf Of John Lin
Sent: Wednesday, March 15, 2017 2:01 AM
To: si-list <si-list@xxxxxxxxxxxxx>
Subject: [SI-LIST] Ground planes beneath power inductor/choke to isolate high
speed digital signal.
Dear SI gurus,
Could someone share experience on routing high speed digital signal
10GHz(layer 3), beneath inductors ( on the top layer)in switching power circuit
area with ground plane(s) (layer 2)for isolation?
What tools should be used to simulate induced noise coupling?
How many ground planes should be used to isolate noise induced by the inductors?
Thank you for helps in advance.
Regards,
John Lin
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