PD671XXX-8 Datasheet, PDF (4/14 Pages) Microsemi Corporation – 24-Channel PoE AF and AT DIMM

PD671xxx - 8 / 12 / 24-Channel PoE AF and AT DIMM
Data Sheet (Non-confidential)
OPERATING CONDITIONS
PARAMETER
Operating ambient temperature
Operating voltage (see Figure 2)
Operating humidity (non-condensing, Per IEC 68-2-56)
MIN.
-10
40 to 44
Notes:
Operating functions depend on the input voltage.
Operating voltage range for IEEE802.3AF is 44 to 57 VDC
Operating voltage range for IEEE802.3AT (High Power) is 50 to 57 VDC
NOM.
44 to 55
MAX.
+70
55 to 57
95
UNIT
°C
VDC
%
Figure 2: Operational voltage Ranges
Airflow
To prevent overheating, the application designer should supply a minimal airflow to the PD671xxx DIMMs.
Figure 3 shows the power handling capability versus air velocities in meter/second, as measured at all points of
the DIMM envelope, prior to insertion into the connector(s). As shown in Figure 12, the connectors are spaced
by 35 mm; 1 m/s = 197 LFM (linear feet per minute). Maximum allowed temperature is +85° C for the MCU
(PD69000) and +125° C for the PD69012.
35
30
25
20
15
10
5
0
0
Air flow
0m/S
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
0.5m/S
1m/S
Ambient temperature
Figure 3: Power per Port for two DIMMs (48 ports)
Copyright © 2009
Microsemi
Page 4
Rev. 1.0 / 17-March-10
Analog Mixed Signal Group
2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: [phone], Outside the USA: [phone] Fax: [phone]