Analog Devices DC2911A Guida rapida alla configurazione

DEMO MANUAL DC2911A

Rev. 0

DESCRIPTION

LT4293, LT4321

IEEE 802.3bt and LTPoE++

Interoperable Powered Device

Demonstration circuit 2911A is an IEEE 802.3bt compli-

ant and LTPoE++ interoperable Power over Ethernet (PoE)

Powered Device (PD). It features the LT

4293 PD interface

controller and the LT4321 PoE ideal diode bridge controller.

The LT4293 provides LTPoE++, IEEE 802.3af (PoE,

Type1), IEEE 802.3at (PoE+, Type 2), and IEEE 802.3bt

(PoE++, Type 3 and 4) compliant interfacing. It utilizes an

external, low RDS(ON) (30mΩ typical) N-channel MOSFET

for the Hot Swap function to improve efficiency.

Power good (PWRGD) output indicates the PD control-

ler is ready to provide power to the downstream load.

This signal can be used to enable an isolated power sup-

ply. The T2P output indicates the available powerfrom

the Power Sourcing Equipment (PSE). This signal

All registered trademarks and trademarks are the property of their respective owners.

PERFORMANCE SUMMARY

BOARD PHOTOS

communicates allocated power from either LTPoE++

or IEEE 802.3bt-compliant PSEs to the downstream

PDcircuitry.

The LT4321 controls eight low RDS(ON) (57mΩ typical)

N-channel MOSFETs to further improve end-to-end power

delivery efficiency and ease thermal design. This solution

replaces the eight diodes typically found in a passive PoE

rectifier bridge.

The DC2911A accepts up to 90W of delivered power from

a PSE via the RJ45 connector (J1) or a local 48V DC

power supply using the auxiliary supply input. When both

supplies are connected, the auxiliary supply input has

priority over the PoE input.

Design files for this circuit board are available.

Description

Performance Summary

Board Photos

Typical Performance Characteristics

Quick Start Procedure

Schematic Diagram

PARAMETER CONDITIONS VALUE

Port Voltage (VPORT) At RJ45 37V to 57V

Auxiliary Voltage From AUX+ to AUX– Terminals 37V to 57V

Efficiency VPORT = 48V, IOUT = 1.5A 99.2% (Typical)

T2P Switching Frequency Connected to an IEEE 802.3bt or LTPoE++ PSE

That Allocates at Least 38.7W

840Hz (Typical)

Top Side Bottom Side

DEMO MANUAL DC2911A

Rev. 0

TYPICAL PERFORMANCE CHARACTERISTICS

Figure1. Thermal Pictures (Conditions: VPORT = 41.2V, VOUT = 40.8V, IOUT = 1.72A)

QUICK START PROCEDURE

Figure2. Efficiency (End-to-End)

POWER OVER ETHERNET (PoE) INPUT

1. Disconnect auxiliary supply if it is connected to AUX+

and AUX– inputs of the DC2911A.

2. Refer to Figure3 or Figure4 to evaluate the DC2911A

with a DC/DC converter. If a resistive or an active load

is used to evaluate the DC2911A, use the setup dia-

gram as shown in Figure5.

3. Default class shunt positions are at JP1 and JP2 on

the DC2911A board. In this configuration, any PSE

with enough power will turn on this PD. Choose a

power level from Table1 and select the corresponding

shuntpositions.

4. Connect the output of the LTPoE++ or IEEE

802.3btcompliant PSE to the RJ45 connector (J1) of

the DC2911A using a CAT5e or CAT6 Ethernet cable.

(See Note.)

5. After connection has been established, verify that the

LED (D3) is lit. This indicates the PSE has success-

fully detected and powered the PD.

6. Verify T2P response with a digital multimeter or an

oscilloscope. The T2P response to the type of PSE

connected to the DC2911A is provided in Table2.

Top Side Bottom Side

LOAD CURRENT (A)

0.3

0.6

0.9

1.2

1.5

1.8

98.4

98.7

99.0

99.3

99.6

EFFICIENCY (%)

DC2911A F02

DEMO MANUAL DC2911A

Rev. 0

Figure3. Setup Diagram for DC2911A with a DC/DC Converter, a Microprocessor, and an IEEE 802.3bt PSE

Figure4. Setup Diagram for DC2911A with a DC/DC Converter, a Microprocessor, and an LTPoE++ PSE

QUICK START PROCEDURE

DC/DC

CONVERTER

PSE TYPE

(TO μP)

OPTO

ENABLE

–

VIN

CAT5e

OR CAT6 CABLE

RJ45

IEEE802.3bt

PSE

VIN

DC2911A F03

DC/DC

CONVERTER

PSE TYPE

(TO μP)

OPTO

ENABLE

–

VIN

CAT5e

OR CAT6 CABLE

RJ45

LTPoE++

PSE

VIN

DC2911A F04

DEMO MANUAL DC2911A

Rev. 0

Table1. Single-Signature Classification, Power Levels and Jumper Selection

PD REQUESTED CLASS

PD REQUESTED POWER (AT THE PD INPUT)

RCLASS JUMPERSIEEE 802.3 LTPoE++

0 13W JP1 JP2

1 3.84W JP3 JP4

2 6.49W JP5 JP6

3 13W JP7 JP8

4 25.5W JP9 JP10

5 40W 38.7W JP11 JP12

6 51W 52.7W JP13 JP14

7 62W 70W JP15 JP16

8 71.3W 90W JP17 JP18

Table2. T2P Response vs PSE Type

PSE TYPE T2P RESPONSE

1 (PoE, 13W) Logic High

2 (PoE+, 25.5W) Logic Low

3 (PoE++, 51W) 50% Logic Low*

4 (PoE++, 71.3W) 25% Logic Low*

LTPoE++, 90W 75% Logic Low*

* T2P Frequency is 840Hz typical for Type 3, Type 4 and LTPoE++ PSEs

Figure5. Setup Diagram for DC2911A with a Resistive or an Active Load. Do Not Capacitively Load LAB_TEST_VOUT–

QUICK START PROCEDURE

RESISTIVE OR

ACTIVE LOAD

CAT5e

OR CAT6 CABLE

RJ45

IEEE802.3bt

PSE

DC2911A F05

USE LAB_TEST_BOUT–

RESISTIVE OR

ACTIVE LOAD

DEMO MANUAL DC2911A

Rev. 0

AUXILIARY SUPPLY INPUT

1. Place and connect test equipment (voltmeter, amme-

ter, oscilloscope and electronic load) as shown in

Figure6.

2. Turn down the electronic load to a minimum value

and turn off the electronic load.

3. Connect the output of the auxiliary supply to the

DC2911A as shown in Figure6. Turn on the auxiliary

QUICK START PROCEDURE

supply and set its current limit to 2A. Then increase

its output voltage to 48V.

4. Once the LED (D3) on the DC2911A is lit, check the

output voltage using a voltmeter. Output voltage

should be within 37V to 57V.

5. Verify T2P response with an oscilloscope as shown

in Figure6. The T2P response during auxiliary power

operation is provided in Table3.

Figure6. Setup Diagram for Auxiliary Supply Input

DC/DC

CONVERTER

PSE TYPE

(TO μP)

OPTO

ENABLE

–

VIN

AUXILIARY

DC POWER

SUPPLY

–

DC2911A F06

Table3. T2P Response During Auxiliary Power Operation

PD CLASS T2P RESPONSE

0 – 4 Logic Low

5 – 8 75% Logic Low*

* T2P Frequency is 840Hz typical

DEMO MANUAL DC2911A

Rev. 0

QUICK START PROCEDURE

Table4. Interoperability (T2P Response*, PSE Allocated Power, Number of Class/Mark Events)

PD REQUESTED CLASS

(PD REQUESTED POWER)

PSE TYPE, CLASS (POWER)

AUXILIARY

POWER

SOURCE**

IEEE 802.3

TYPE 1

IEEE 802.3

TYPE 2

IEEE 802.3

TYPE 3

IEEE 802.3

TYPE 4 LTPoE++

CLASS 3

(13W)

CLASS 4

(25.5W)

CLASS 4

(25.5W)

CLASS 5

(40W)

CLASS 6

(51W)

CLASS 7

(62W)

CLASS 8

(71.3W) (38.7W) (52.7W) (70W) (90W)

CLASS 0−3

(Up to 13W)

Hi-Z

Up to 13W

1-Event

Hi-Z

Up to 13W

1-Event

Hi-Z

Up to 13W

1-Event

Hi-Z

Up to 13W

1-Event

Hi-Z

Up to 13W

1-Event

Hi-Z

Up to 13W

1-Event

Hi-Z

Up to 13W

1-Event

Hi-Z

Up to 13W

1-Event

Hi-Z

Up to 13W

1-Event

Hi-Z

Up to 13W

1-Event

Hi-Z

Up to 13W

1-Event

Low-Z

Aux. Power

N/A

CLASS 4

(25.5W)

Hi-Z

13W

1-Event

Low-Z

25.5W

2-Event

Low-Z

25.5W

3-Event

Low-Z

25.5W

3-Event

Low-Z

25.5W

3-Event

Low-Z

25.5W

3-Event

Low-Z

25.5W

3-Event

Low-Z

25.5W

2-Event

Low-Z

25.5W

2-Event

Low-Z

25.5W

2-Event

Low-Z

25.5W

2-Event

Low-Z

Aux. Power

N/A

CLASS 5

(40W)

Hi-Z

13W

1-Event

Low-Z

25.5W

2-Event

Low-Z

25.5W

3-Event

50%

40W

4-Event

50%

40W

4-Event

50%

40W

4-Event

50%

40W

4-Event

75%

38.7W

3-Event

75%

38.7W

3-Event

75%

38.7W

3-Event

75%

38.7W

3-Event

75%

Aux. Power

N/A

CLASS 6

(51W)

Hi-Z

13W

1-Event

Low-Z

25.5W

2-Event

Low-Z

25.5W

3-Event

Low-Z

25.5W

3-Event

50%

51W

4-Event

50%

51W

4-Event

50%

51W

4-Event

DENIED

75%

52.7W

3-Event

75%

52.7W

3-Event

75%

52.7W

3-Event

75%

Aux. Power

N/A

CLASS 7

(62W)

Hi-Z

13W

1-Event

Low-Z

25.5W

2-Event

Low-Z

25.5W

3-Event

Low-Z

25.5W

3-Event

50%

51W

4-Event

25%

62W

5-Event

25%

62W

5-Event

DENIED DENIED

75%

70W

3-Event

75%

70W

3-Event

75%

Aux. Power

N/A

CLASS 8

(71.3W)

Hi-Z

13W

1-Event

Low-Z

25.5W

2-Event

Low-Z

25.5W

3-Event

Low-Z

25.5W

3-Event

50%

51W

4-Event

50%

51W

4-Event

25%

71.3W

5-Event

DENIED DENIED DENIED

75%

90W

3-Event

75%

Aux. Power

N/A

↓

T2P Response* →

PSE Allocated Power →

Number of Classification Events →

75%

90W

3-Event

Note 1. Shade of blue indicates the PD has been demoted or denied power.

* Specified as the percentage of the period which T2P is low impedance with respect to GND.

** Auxiliary Power Supply must be sized to provide PD Requested Power.

DEMO MANUAL DC2911A

Rev. 0

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

3 2 C1, C5 CAP., 0.047μF, X7S, 100V, 10%, 0603 TDK, C1608X7S2A473K080AB

4 0 C2 CAP., OPTION, 0402 OPT

5 1 C3 CAP., 0.047μF, X7R, 100V, 10%, 0805 AVX, 08051C473KAT2A

6 1 C4 CAP., 22μF, ALUM., 100V, 20%, SMD 8mm ×10.2mm,

CE-BS SERIES

SUN ELECTRONIC INDUSTRIES CORPORATION,

100CE22BS

1 2 CG1, CG2 CAP., 1000pF, X7R, 2000V, 10% 1808 TDK, C4520X7R3D102K130KA

2 4 CT1, CT2, CT3, CT4 CAP, 0.01μF, X7R, 200V, 10%, 0805 AVX, 08052C103KAZ2A

7 1 D1 DIODE, TVS, 58V, 600W, 2-PIN SOD128, AEC-Q101 NEXPERIA, PTVS58VP1UTP

8 1 D2 DIODE, SCHOTTKY, 100V, 3A, 2-PIN SOD-128, AEC-Q101 NEXPERIA, PMEG10030ELPX

9 1 D3 LED, GREEN, WATER-CLEAR WURTH ELEKTRONIK, 150080VS75000

10 1 D4 DIODE, ZENER, 12V, 200mW, SOD-323 DIODES INC, MMSZ5242BS-7-F

11 7 E1-E7 TEST POINT, TURRET, 0.094 MTG. HOLE MILL-MAX 2501-2-00-80-00-00-07-0

13 2 J1, J2 CONN., MOD JACK, RJ45, FEMALE, R/A THT, 1 PORT, 8P8C STEWART CONN./BEL, SS-7188S-A-NF

12 18 JP1-JP18 CONN., HDR., MALE, 1 × 2, 2mm, THT, STR SULLINS CONNECTOR SOLUTIONS, NRPN021PAEN-RC

14 2 Q1, Q11 XSTR., MOSFET, N-CH, 100V, 36.6mΩ, 30A, 91W, LFPAK33 NEXPERIA, PSMN040-100MSE

15 8 Q3-Q10 XSTR., MOSFET, N-CH, 100V, 71mΩ, 18A, 65W, LFPAK33 NEXPERIA, PSMN075-100MSE

28 1 R10 RES., 52.3k, 1%, 1/10W, 0603 VISHAY, CRCW060352K3FKEA

29 2 R11, R18 RES., 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA

30 1 R12 RES., 8.2Ω, 1/8W, 1%, 0805 VISHAY, CRCW08058R20FKEA

31 1 R13 RES., 3.3k, 1/10W, 5%, 0603 VISHAY, CRCW06033K30JNEA

32 2 R14, R15 RES., 100k, 1/10W, 5%, 0603 VISHAY, CRCW0603100KJNEA

33 0 R16, R17 RES., OPTION, 0805 OPT

34 1 R19 RES., 30k, 1/10W, 5%, 0603 VISHAY, CRCW060330K0JNEA

27 1 R9 RES., 174k, 1%, 1/10W, 0603 VISHAY, CRCW0603174KFKEA

16 2 RC1, RC6 RES., 1.00k, 1/8W, 1%, 0805 VISHAY, CRCW08051K00FKEA

23 1 RC11 RES., 64.9Ω, 1/8W, 1%, 0805 VISHAY, CRCW080564R9FKEA

24 1 RC13 RES., 118Ω, 1/8W, 1%, 0805 VISHAY, CRCW0805118RFKEA

17 2 RC2, RC8 RES., 140Ω, 1/8W, 1%, 0805 VISHAY, CRCW0805140RFKEA

18 2 RC3, RC10 RES., 76.8Ω, 1/8W, 1%, 0805 VISHAY, CRCW080576R8FKEA

19 2 RC4, RC12 RES., 49.9Ω, 1/8W, 1%, 0805 VISHAY, CRCW080549R9FKEA

20 1 RC5 RES., 34.8Ω, 1/8W, 1%, 0805 VISHAY, CRCW080534R8FKEA

21 1 RC7 RES., 37.4Ω, 1/8W, 1%, 0805 VISHAY, CRCW080537R4FKEA

22 1 RC9 RES., 46.4Ω, 1/8W, 1%, 0805 VISHAY, CRCW080546R4FKEA

25 1 RMPS RES., 3.0k, 5%, 1W, 2512 VISHAY, CRCW25123K00JNEG

26 8 RT1-RT8 RES., 75Ω, 1/10W, 5%, 0603 VISHAY, CRCW060375R0JNEA

38 2 SHUNTS ON JP1

AND JP2

CONN., SHUNT, FEMALE, 2 POS, 2mm WURTH ELEKTRONIK, 60800213421

35 1 T1 XFMR., 350μH, 1:1 ±2% WURTH ELEKTRONIK, 749022016

36 1 U1 I.C., LTPoE++/802.3bt PD CONTROLLER, DFN10, 3mm × 3mm ANALOG DEVICES, LT4293IDD

37 1 U2 I.C., PoE IDEAL DIODE BRIDGE CONTROLLER, QFN16-UF,

4mm × 4mm

ANALOG DEVICES, LT4321IUF

39 2 STENCILS, (TOP & BOTTOM) STENCIL DC2911A-1

DEMO MANUAL DC2911A

Rev. 0

SCHEMATIC DIAGRAM

D D

B B

A A

37V - 57V

1. ALL RESISTORS AND CAPACITORS ARE 0603

2. ALL RESISTORS TOLERANCE RATING ARE 5%

NOTE 1: UNLESS OTHERWISE SPECIFIED

JUMPER SELECTIONS

RCLASS JUMPERS

JP1

JP3

JP5

JP7

JP9

JP11

JP13

JP15

JP17

JP2

JP4

JP6

JP8

JP10

JP12

JP14

JP16

JP18

RCLASS JUMPERS

USE VOUT+ AND VOUT- TERMINALS

TO CONNECT TO A PWRGD ENABLED

POWER SUPPLY ONLY.

USE VOUT+ AND LAB_TEST_VOUT-

TERMINALS FOR LAB TESTING

WITH ELECTRONIC OR RESISTIVE

LOAD ONLY. NOT NEEDED FOR

FINAL CIRCUIT.

802.3bt

REQ.

POWER

40W

51W

62W

71.3W

38.7W

52.7W

70W

90W

LTPoE++

REQ.

POWER

13W

3.84W

6.49W

13W

25.5W

CLASS

VPORTP

VPORTN

PWRGD

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

ERIC H.1ST PROTOTYPE 81-92-111

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

ERIC H.1ST PROTOTYPE 81-92-111

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

ERIC H.1ST PROTOTYPE 81-92-111

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

CUSTOMER NOTICE

ADI HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT ADI APPLICATIONS

ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO ADI AND

SCHEMATIC

SUPPLIED FOR USE WITH ADI PARTS.

SCALE = NONE

www.analog.com

Thursday, November 29, 2018

1 2

IEEE 802.3bt COMPLIANT, LTPoE++

ERIC H.

N/A

LT4293IDD, LT4321IUF

DEMO CIRCUIT 2911A

KIM T.

INTEROPERABLE POWERED DEVICE

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

CUSTOMER NOTICE

ADI HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT ADI APPLICATIONS

ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO ADI AND

SCHEMATIC

SUPPLIED FOR USE WITH ADI PARTS.

SCALE = NONE

www.analog.com

Thursday, November 29, 2018

1 2

IEEE 802.3bt COMPLIANT, LTPoE++

ERIC H.

N/A

LT4293IDD, LT4321IUF

DEMO CIRCUIT 2911A

KIM T.

INTEROPERABLE POWERED DEVICE

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

CUSTOMER NOTICE

ADI HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT ADI APPLICATIONS

ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO ADI AND

SCHEMATIC

SUPPLIED FOR USE WITH ADI PARTS.

SCALE = NONE

www.analog.com

Thursday, November 29, 2018

1 2

IEEE 802.3bt COMPLIANT, LTPoE++

ERIC H.

N/A

LT4293IDD, LT4321IUF

DEMO CIRCUIT 2911A

KIM T.

INTEROPERABLE POWERED DEVICE

PTVS58VP1UTP

2 1

JP14

RMPS

2512

3.0k

R11

TP5

JP18

JP1

RC5

34.8

0805 1%

JP3

JP8

RC12

49.9

0805 1%

RC11

64.9

0805 1%

RC8

140

0805 1%

PMEG10030ELPX

47nF

X7R

100V

0805S

R16

0805S

RCLS

R14

100k

RC6

1.00k

0805 1%

0.047uF

100V

0603

JP15

TP1

LAB_TEST_VOUT-

PSMN040-100MSE

JP2

Q11

PSMN040-100MSE

22uF

100V

R19

30k

RC13

118

0805 1%

OPT

0402S

VOUT-

RC3

76.8

0805 1%

RC7

37.4

0805 1%

AUX+

R15

100k

TP3

RC2

140

0805 1%

JP5

R13

3.3k

JP6

LT4293IDD

GND

AUX

RCLASS

RCLASS++

GND

5T2P 6

PWRGD 7

HSSRC 8

HSGATE 9

VPORT 10

R10

52.3k TP4

VOUT+

JP13

R17

OPT

0805S

RCLS++

JP16

JP17

RC4

49.9

0805 1%

174k

JP10

RC10

76.8

0805 1%

T2P

RC9

0805 1%

46.4

RC1

1.00k

0805 1%

GRN

1 2

JP4

PWRGD

JP7

JP11

JP9

TP2

MMSZ5242BS, 12V

2 1

R12

8.2

0805S

AUX-

JP12

RCLASS++

RCLASS

RCLASS++

RCLASS

VPORTN

DEMO MANUAL DC2911A

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog

Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications

subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

SCHEMATIC DIAGRAM

D D

B B

A A

OUT TO PHY

37V - 57V

IN FROM PSE

VPORTP

VPORTN

PWRGD

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

CUSTOMER NOTICE

ADI HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT ADI APPLICATIONS

ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO ADI AND

SCHEMATIC

SUPPLIED FOR USE WITH ADI PARTS.

SCALE = NONE

www.analog.com

Thursday, November 29, 2018

2 2

IEEE 802.3bt COMPLIANT, LTPoE++

ERIC H.

N/A

LT4293IDD, LT4321IUF

DEMO CIRCUIT 2911A

KIM T.

INTEROPERABLE POWERED DEVICE

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

CUSTOMER NOTICE

ADI HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT ADI APPLICATIONS

ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO ADI AND

SCHEMATIC

SUPPLIED FOR USE WITH ADI PARTS.

SCALE = NONE

www.analog.com

Thursday, November 29, 2018

2 2

IEEE 802.3bt COMPLIANT, LTPoE++

ERIC H.

N/A

LT4293IDD, LT4321IUF

DEMO CIRCUIT 2911A

KIM T.

INTEROPERABLE POWERED DEVICE

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

CUSTOMER NOTICE

ADI HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT ADI APPLICATIONS

ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO ADI AND

SCHEMATIC

SUPPLIED FOR USE WITH ADI PARTS.

SCALE = NONE

www.analog.com

Thursday, November 29, 2018

2 2

IEEE 802.3bt COMPLIANT, LTPoE++

ERIC H.

N/A

LT4293IDD, LT4321IUF

DEMO CIRCUIT 2911A

KIM T.

INTEROPERABLE POWERED DEVICE

RT6

PSMN075-100MSE

RT2

VPORTP

RT8

SS-7188S-A-NF

910

RT5

CT4

0.01uF

100V

0805S

PSMN075-100MSE

0.047uF

100V

PSMN075-100MSE

CG1

1000pF

2KV

1808

749022016

D- 3

TD 1

X+

X-

D+ 11

D- 9

D- 6

D+ 8

X-

TD 4

D+ 5

D+ 2

15 TD 10

TD 7

D- 12

X+

X-

X+

X-

X+

CG2

1000pF

2KV

1808

LT4321IUF

TG36

IN36

IN45

TG45

TG78

IN78

BG78

BG45

OUTP 12

EN 11

EN 10

OUTN 9

TG12 16

IN12 15

BG12 14

BG36 13

EP 17

CT2

0.01uF

100V

0805S

PSMN075-100MSE

RT7

RT1

75 RT4

CT3

0.01uF

100V

0805S

CT1

0.01uF

100V

0805S

PSMN075-100MSE

R18

PSMN075-100MSE

RT3

Q10

PSMN075-100MSE

SS-7188S-A-NF

910

TG36

POE_CT36

POE_CT45

TG45

TG12

BG12

TG36

BG36

TG45

BG45

TG78

BG78

POE_CT36 POE_CT45 POE_CT78

VPORTP

VPORTN

TG78

POE_CT78

BG78

BG45

TG12

POE_CT12

BG12

BG36

POE_CT12

POE_CT78

POE_CT45

POE_CT36

POE_CT12

DEMO MANUAL DC2911A

Rev. 0

 ANALOG DEVICES, INC. 2019

09/19

www.analog.com

ESD Caution

ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection

circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.

Legal Terms and Conditions

By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and

conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation

Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”)

and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to

Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and

agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted

is expressly made subject to the following additional limitations:Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board;and (ii) permit any Third

Party to access the Evaluation Board. As used herein, the term “Third Party”includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is

NOT sold to Customer;all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all

be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of

use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile

or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited

to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS

Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF

LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS”AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY

DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE

IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS

LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF THE EVALUATION BOARD, INCLUDING

BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE

HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States

federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts

(excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits

to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.

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