PEM1303 INFOMART IT SOLUTIONS, PEM1303 Datasheet

PEM1303

Manufacturer Part Number

PEM1303

Description

55T6941

Manufacturer

INFOMART IT SOLUTIONS

Datasheet

1.PEM1303.pdf (5 pages)

Specifications of PEM1303

Rohs Compliant

YES

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PRODUCT OVERVIEW

The PEM1300 series of power

modules, have complete compliance with the

IEEE

standard, and are designed to extract power from

CAT5 Ethernet cable when sourced by a IEEE

802.3af compliant Power Sourcing Equipment

(PSE).

With the increasing demand for “Green Power”

IEEE has emphasized the need for power “right-

sizing”. The PEM1300 series Powered Device

(PD) modules provides full PoE signature and

programmable power classification for granular

power management.

Its high efficiency DC-DC converter provides a

well regulated low noise and low ripple output

with in-built overload and output short-circuit

protection.

The PEM1300 series provides a quick, easy, and

low

manufacturers to “PoE enable” their equipment.

PRODUCT FEATURES



operate in over current mode and will auto recover when

the over load condition is removed.

www.poweredethernet.com

In 5V and 12V model

If maximum power is exceeded, the PEM1300 will

Fully IEEE 802.3af compliant

12.95 watt output load

IEEE Power class programmable (Green)

1500 Volt DC isolation (Input to Output)

3.3V, 5V, 12V DC output voltage models

Compact package minimum PCB footprint

Minimal external components required

Overload and short circuit protection

Wide input voltage (36V to 57V DC)

Adjustable output voltage

RoHS 2002/95/EC compliant

Low output ripple and noise

Low cost

cost

802.3af

method

Power-Over-Ethernet

for

Ethernet

equipment

extraction

(PoE)

unless otherwise noted. These are meant as a design aid only and are indicative, and not guaranteed.

imply functional operation under these conditions. These ratings assume free air flow.

PEM1300_11G-R0-8 (DRAFT)

PRODUCT SELECTOR

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (V

Storage Temperature (T

Output Voltage (V

INPUT CHARACTERISTICS

Input Voltage

Under Voltage Lockout

Input Current

Operating Temperature

IEEE 802.3af Power Classification

DC OUTPUT CHARACTERISTICS

Line Regulation

Load Regulation

Output Ripple and Noise

Isolation Voltage

Temperature Coefficient (Slope)

Figure 1 - BLOCK DIAGRAM and TYPICAL CONNECTIONS

Output voltage typical ± 3% at T

At nominal Vin at 67% load

All specifications typical are at T

Exceeding the absolute maximum ratings may cause permanent damage to the product. We do not

With minimum load 100mA

Please refer to IEEE802.3af standards document. Maximum input current is dependent on power

class, and input voltage. Input current (DC or RMS) at V

230mA. Peak inrush current is 400mA for 50mS max at duty cycle of 5% max.

Please see section F.6. – Thermal profile on operating temperature

Input

Please see section F.2 – Powered Device Signature and Class programming for more details

Part Number

VINB-

PEM1303

PEM1305

PEM1312

VINA+

CP1

CP2

Parameter

OUT

Marking

)

5, 8

)

0V – 57V DC

-25

0V to controlled output voltage (operating or non-operating)

of 25

Input Voltage

of 25

(Optional) C2 – Safety Capacitor (for EMI tuning)

(Volts DC)

Signature

Nominal

802.3af

Control

IEEE

and

C – 100

C with a nominal input voltage and rated output current.

C with a nominal input voltage and rated output current

PEM1300

Symbol

UVLO

LNRG

LDRG

ISOL

RIP

Power Over Ethernet PD Module

Converter

(Volts DC)

DC-DC

Voltage

Output

Programmable Class 0, 1, 2, or 3

PORT

PEM1300 SERIES

3.3

Min.

-20

=37vDC is 350mA, at V

Typ

0.2%

0.5%

350

100

Efficiency

(%)

Output

+VDC

-VDC

ADJ

1500

Max.

400

300

PORT

Page 1 of 5

(Maximum)

Low ESR

470uF

=57vDC is

(Watts)

Power

12.95

ppm

mV p-p

Units

V DC

Volts

+VDC

-VDC

6,7

Related parts for PEM1303

PEM1303 Summary of contents

Page 1

... Low cost and 12V model 2 If maximum power is exceeded, the PEM1300 will operate in over current mode and will auto recover when the over load condition is removed. www.poweredethernet.com PRODUCT SELECTOR Part Number Marking PEM1303 3 PEM1305 5 PEM1312 12 ABSOLUTE MAXIMUM RATINGS Supply Voltage ( Storage Temperature (T ...

Page 2

... F.2. Powered Device (PD) Signature and Power Classification When the PEM1300 is connected to a Cat 5e or greater Ethernet cable from an IEEE 802.3af compliant Power Sourcing Equipment (PSE), Endspan or Midspan, it will automatically present a Powered Device (PD) signature to the PSE, as and when requested. The PSE will then recognise that connected to that line and supply power. With the growing emphasis on “ ...

Page 3

... Figure 3 Figure 4 F.5. Pin Connections INPUT PINS VINA+. This pin connects to Ethernet cable spare pair (for Mode 1 B PoE injection). Not polarity sensitive. VINA-. This pin connects to Ethernet cable spare pair (for Mode 2 B PoE injection). Not polarity sensitive. ...

Page 4

... PEM13XX -VDC Place C1 close to output pins www.poweredethernet.com 1 2.54 ± 0.25 0.60 ± 0.05 33.5 ± 0.25 in PEM1303 PEM1305 Ambient Temperature ( A power plane heat sink on the motherboard is a relatively simple method to draw some heat away from the PEM1300 using the output pins (-VDC and +VDC) which are connected to a PCB heat sink on the motherboard ...

Page 5

... APPLICATION NOTES Power Over Ethernet (PoE technology for wired Ethernet, the most widely installed local area network technology in use today. PoE allows the electrical power necessary for the operation of each end-device to be carried by data cables along with the data, rather than by separate power cords ...

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