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Cisco ASR 9000 Series Aggregation Services Router Overview and Reference Guide
OL-17501-09
Chapter 2 Functional Description
Power System Functional Description
Figure 2-50 Cisco ASR 9904 Router DC Power System Block Diagram—Version 2 Power System
Figure 2-51 and Figure 2-52 show block diagrams of the Cisco ASR 9922 Router with AC and DC
version 2 power systems.
DC/DC Power Shelf
connected to 4 Power Supply
Modules
Power Distribution
Backplane
DC/DC
Pwr Sply
Module-0
1.5 KW or
2KW
EMI
Filter
-54V
-54V
-54V
-54V
-10.8V
-10.8V
-54V
-54V RTN
-54V
DC-A1
(60A)
TB-A1
TB-B1
390183
EMI
Filter
DC-B1
(60A)
DC/DC
Pwr Sply
Module-1
1.5 KW or
2KW
EMI
Filter
DC-A2
(60A)
TB-A2
TB-B2
EMI
Filter
DC-B2
(60A)
DC/DC
Pwr Sply
Module-3
1.5 KW or
2KW
EMI
Filter
DC-A3
(60A)
TB-A3
TB-B3
EMI
Filter
DC-B3
(60A)
DC/DC
Pwr Sply
Module-4
1.5 KW or
2KW
EMI
Filter
DC-A4
(60A)
TB-A4
TB-B4
EMI
Filter
DC-B4
(60A)
Line Card (x1)
Soft-Start
Circuit,
EMI Filter
Narrow
Range,
Fixed
Ratio
(5:1)
10.8V
Converter
Point of
Load
(POL)
Converters
RSP Card (x2)
Soft-Start
Circuit,
EMI Filter
Narrow
Range,
Fixed
Ratio
(5:1)
10.8V
Converter
Point of
Load
(POL)
Converters
Fan Tray
Soft-Start
Circuit,
EMI Filter
Fan
Controller
and
Cooling
Fans
-54V
-54V
-54V
-54V -10.8V
Line Card (x1)
Soft-Start
Circuit,
EMI Filter
Narrow
Range,
Fixed
Ratio
(5:1)
10.8V
Converter
Point of
Load
(POL)
Converters
-54V