| Thread Links | Date Links | ||||
|---|---|---|---|---|---|
| Thread Prev | Thread Next | Thread Index | Date Prev | Date Next | Date Index |
|
FYI: Vport ad hoc, material to be
discussed is attached. From: Fred Schindler
(frs) Hello, The Vport ad hoc has the following meeting schedule to
discuss the dynamic port voltage requirements. This meeting will be used
to review data and constraints, and develop new constrains for the proposed
IEEE 802.3at standard. This effort would benefit from additional data on PSE
transient response and PD di/dt demands (Please see the previous presentation
for how these are characterized.). Thursday November 9, 9 AM (PST) Telephone number: 888-525-6064
, 408-525-6064 Meeting ID: 802328
(8023at) Duration: 60 minutes Thanks, Fred Schindler Technical Leader CISCO Systems M/S SJ-19-3 Tel. (408) 525-9859 -------------------- Information from our last meeting
--------------- … 5) Items
to collect data on: (everyone is encouraged to collect this information) a.
PD di/dt values for
i.
Shipping systems. ii. Front-ends
of PD with maximum load step.
iii.
When PSE changes from 57V to 44V through a representative channel
resistance. b. Topologies
of DC-DC suitable for PDs. Identify the worst-case topology for
additional analysis. c. AC-DC
di/dt demand possible (data points) while still within specification. The last presentation given
on this topic is available at: http://grouper.ieee.org/groups/802/3/at/public/sep06/index.html |
IEEE 802 3at Task Force Vport Dynamic Dallas v1.pdf