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

Data Sheet (Non-confidential)

Copyright © 2009

Microsemi

Page 6

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

Dynamic Characteristics____________

The PD671xxx DIMMs utilize three programmable

(OVL_S to OVL) are categorized as ‘overloads’ and

are automatically shutdown. Automatic recovery

from overload and no-load conditions is attempted

seconds, respectively). Output current is limited to

each port.

DC Disconnect

‘no-load’ and is shutdown.

AC Disconnect

A port maintains power if Zac < 27 K

Ω

A port shutdowns power if Zac > 1980 K

Ω for a

time period greater than TPMDO.

PARAMETER

CO NDITIO N S

MIN.

TYP.

MAX.

UNIT

Automatic

recovery from

(can be modified via control port)

5

s

Automatic

recovery from no-

point (can be modified via control port)

1

s

Inrush current

750

mA

Output current

operating range

Continuous operation after startup

period

10

700

mA

Output power

available,

operating range

Continuous operation after startup

period, at port output (@ Vport =

57 VDC)

0.57

30

W

0

5

mA

DC disconnect

OFF mode

May or may not disconnect for t greater

5

7.5

10

mA

Zac1

Does not remove power

27

K

Ω

AC Disconnect

OFF mode

Zac2

Remove power

1980

K

Ω

PD power

maintenance

Buffer period to handle transitions

300

400

ms

Over load current

detection range

660

680

700

mA

Over load time

limit

Typical timer accuracy is 2 ms

50

75

ms

Turn on rise time

PD load consisting of 100 uF capacitor

15

us

Port turn off time

Toff

500

ms

I

lim

I

cu t

I

mi n

T

mi n

UDL _ S

UDL

Po r t o f f

OV L

T

cu t

OV L _ S

I

ch an n e l

Po r t 1

Po r t 2

Figure 4: Power Limits