PD671xxx - 8 / 12 / 24-Channel PoE AF and AT DIMM

Data Sheet (Non-confidential)

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: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308

OPER ATIN G CONDITION S

PARAMETER

MIN.

NOM.

MAX.

UNIT

Operating ambient temperature

-10

+70

°C

Operating voltage (see Figure 2)

40 to 44

44 to 55

55 to 57

VDC

Operating humidity (non-condensing, Per IEC 68-2-56)

95

%

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

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.

Air flow

0

5

10

15

20

25

30

35

0

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

Ambient temperature

0m/S

0.5m/S

1m/S

Figure 3: Power per Port for two DIMMs (48 ports)