Power Supply For Sas 9260 Raid Controllers - LSI MegaRAID SAS 9240-4i User Manual

3.3.4.4 Operating and Non-operating Conditions for SAS 9260 RAID Controllers
operating from the 3.3V rails and the 12V rail provide the necessary
voltages. The following states determine the typical current consumption
of the controller:
•
State 1: During a hard reset
•
State 2: During a drive stress test
•
State 3: While sitting idle at the DOS prompt
The supply voltages are 12V ± 8 percent (from PCI edge connector only)
and 3.3V ± 9 percent (from PCI edge connector only).
the power supply for the RAID controllers for each of the three states at
the different voltages.
Table 3.11

Power Supply for SAS 9260 RAID Controllers

PCI Edge Connector
3.3V supply
+12V supply
3.3V auxiliary supply
Note: +12V is used in the charging circuitry for the battery pack
on the optional iBBU battery-backed daughter card. If the
BBU daughter card is mounted, the following power
consumption figures apply:
– During trickle charging of the battery pack: N/A (no
trickle charge for Li-ION)
– During fast charging of the battery pack: 230mA in +12V
current
For the SAS 9260 RAID controllers, the operating (thermal and
atmospheric) conditions are:
•
Relative humidity range is 5 percent to 90 percent noncondensing
(20 percent to 80 percent noncondensing for the RAID controllers)
•
Airflow must be at least 200 linear feet per minute (LFPM) to avoid
operating the LSISAS2108 processor above the maximum
ambient temperature
Technical Specifications
Copyright © 2009 by LSI Corporation. All rights reserved.
State 1 State 2
330mA 330mA
1.00A 1.81A
30mA 30mA
Table 3.11 lists
State 3
330mA
1.53A
30mA
3-19