Cisco Systems Cisco 12008 manual Ð48 VDC

Power Distribution System in the Cisco 12008

Figure 1-23

Power Distribution System in the Cisco 12008

Backplane

Ð48 VDC

+5.2 VDC

Ð48 VDC

+5.2 VDC

Ð48 VDC

+5.2 VDC

Ð48 VDC

+5.2 VDC

RP

+5 VDC

DC/DC converter +3.3 VDC

MBus

module

Line cards

+5 VDC

DC/DC converter +3.3 VDC

MBus

module

CSC card(s)

+3.3 VDC

DC/DC

converter

+24 VDC

MBus

module

SFC cards

DC/DC converter +3.3 VDC

MBus

module

Power supply

fan tray

Card cage

fan tray

Backplane

+5.2 VDC

Ð48 VDC

AC or DC

power

supply(ies)

Source voltage AC-input power supply (180 VAC to 264 VAC)

or

Source voltage DC-input power supply (Ð48 VDC to Ð60 VDC)

H7686

Minimum power supply configuration: One AC-input power supply or one DC-input power supply

Maximum power supply configuration: Two AC-input power supplies or two DC-input power supplies

Product Overview 1-73