Datasheet > PD64004AH_1

PD64004AH_1

更新时间： 2022-12-17 04:16:29

品牌	Logo	应用领域
美高森美 - MICROSEMI		以太网
页数	文件大小	规格书
19页	703K
描述
4-Port Power Sourcing Equipment Manager for Power over Ethernet Systems

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PD64004AH_1 数据手册

PD64004AH - 4-Port Power Sourcing Equipment

Manager for Power over Ethernet Systems

Electrical Characteristics for Analog I/O Pads

PARAMETER

Pin Name

MIN.

MAX.

UNIT

REMARKS

ASICINI, I2CINI

Operating voltage

Current consumption

Pin Name

-1

ADC2p5

VDC

μA

I_REF

Output voltage

1.21

1.34

VDC

With external 24.9 kΩ resistor to ground

Pin Name:

Operating voltage

Internal current source

PWRINI

100mV

From ADC2p5

+1.5

Dynamic Characteristics

The PD64004AH utilizes three programmable current level thresholds (I_min, I_cut, I_lim) and two timers (T_min, T_cut). Loads that

dissipate more than I_cutfor longer than T_cut(OVL_S to OVL) are classified as ‘overloads’ and are automatically shutdown. If

output power is below I_minfor more than T_min(UDL_S to UDL) the PD is classified as ‘no-load’ and is shutdown.

Automatic recovery from overload and no-load conditions is attempted every T_OVLRECand T_UDLRECperiods (typically 5 and 1

seconds, respectively). Output power is limited to I_lim,which is the maximum peak power allowed at the port.

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Automatic recovery

from overload

T_OVLRECvalue, measured from port shutdown

shutdown

Automatic recovery

from no-load shutdown

Cutoff timers accuracy

T_UDLRECvalue, measured from port shutdown

Typical accuracy of Tcut

Inrush current

I_Inrsh

AF mode – t = 50 ms, Cload =

180 uF max.

IEEE802.3at mode – t = 33 ms

Continuous operation after startup

period.

Continuous operation after startup

period, at port output.

Must disconnect for t greater than

TUVL

450

692

654

Output current

Iport

P_port

0.57

600

operating range

Output power available,

operating range

Off mode current

I_min1

Imin2

T_PMDO

May or may not disconnect for t

greater than TUVL

Buffer period to handle transitions

for both AF mode and IEEE802.3at

mode

7.5

PD power maintenance

request drop-out time

limit

300

400

Over load current

detection range

AF mode - Time limited to TOVL

350

600

400

615

Icut

IEEE802.3at mode - Time limited

to TOVL

AF mode

Over load time limit

TOVL

IEEE802.3at mode

Turn on rise time

Turn off time

T_rise

Toff

From 10% to 90% of V_port

(Specified for PD load consisting of 100 uF

capacitor in parallel to 200 Ω).

From Vport to 2.8 VDC

500

Rev. 1.0, 14-Jan-10

Microsemi

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

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