[SI-LIST] High Voltage Stackup
- From: "Pat Sharkey" <psharkey@xxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Tue, 7 Dec 2004 09:21:18 -0600
Hello All,
The following is a proposed stackup for a design with high voltage (300VDC)
and lower voltages (3.3V, 5V) on the same pcb.
Layer 1 - low voltage signals A
Layer 2 - low voltage ground plane
Layer 3 - low voltage signals B
Layer 4 - +3.3V/+5V split plane
Layer 5 - low voltage ground plane
Layer 6 - high voltage signals
Layer 7 - high voltage ground plane
Layer 8 - high voltage signals
The concern is dealing with the split power on layer 4 without adding
additional layers. Would it be best to simply move the +5V to layer 5 to
eliminate the split? The low and high voltage ground planes are connected
via a low value resistor. The two different grounds could be combined while
still restricting the routing to layer pairs 1-3 and 6-8.
Best Regards,
Pat Sharkey
BVR Technologies
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