Midplane Power Distribution; I/O) Segmentation; Zt 5085 Midplane Power Distribution; Dc Input Specifications - Intel NetStructure ZT 5085 12U Manual

Power Subsystem
Table 9.

DC Input Specifications

Parameter
Input Voltage –DC
Hold-up Time
Input Current
Input Protection
Inrush Surge Current
Operating Frequency
Input Transient
Protection
4.9

Midplane Power Distribution

The ZT 5085's power distribution architecture includes dual power domains, multiple V(I/O)
domains, and ORed management power to central resources.
distribution on the midplane.
Figure 24. ZT 5085 Midplane Power Distribution
4.9.1 V(I/O) Segmentation
The ZT 5085's midplane provides five independent V(I/O) planes: one for each of the two
CompactPCI segments and one for each of the two fabric slots, and one for the pair of PCI-less
slots. Each V(I/O) plane can be independently strapped for either 3.3 V or 5 V V(I/O). Refer to
Section 2.4.3, "Setting V(I/O)" on page 29
levels.
54
Conditions/Description
Continuous input range.
From 48 VDC Input.
At full rated load; 36 VDC, 48VDC
Non-user serviceable, internally-located input
line fuse
Internally limited by thermistor and electronic
switch.
Switching frequency of main output
transformer
Varistor
(3.3V, 5V, 12V, and -12V)
H.110 Power Buses
V(I/O)A V(I/O)B
Fabric PCI Segment 1
A Slot
MIN
36
4
125
Figure 24
Backplane
V(I/O)C V(I/O)D
PCI Segment 2 PCI-Less
for information on configuring the different V(I/O)
Technical Product Specification
NOM MAX Units
75 VDC
ms
7.6, 5.4 A
12 A
145 KHz
illustrates power
V(I/O)E
Fabric
Slots B Slot