Analog Devices INEAR TECHNOLOGY DC2583A Guide de configuration rapide

dc2583af

DEMO MANUAL DC2583A

Description

LT4294, LT4321

IEEE 802.3bt Powered Device

Demonstration circuit 2583 is an IEEE802.3bt (Draft 2.3)

compliant Power over Ethernet (PoE) powered device

(PD). It features the LT

4294 PD interface controller and

the LT4321 PoE ideal diode bridge controller.

The LT4294 provides 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) (57mΩ typical) N-channel FET for the hot

swap function to improve efficiency. Additional features

include power good (PWRGD) and T2P output indica-

tors for interfacing with downstream electronics. The

PWRGD output indicates the PD controller is ready to

provide power to the downstream load. This signal can be

used to enable an isolated power supply. The T2P output

indicates the available power from the power sourcing

L, LT, LTC, LTM, Linear Technology, LTPoE++ and the Linear logo are registered trademarks of

Analog Devices, Inc. All other trademarks are the property of their respective owners.

BoarD photo

equipment (PSE) to the downstream load. This signal can

be used to limit the load and prevent overloading the PSE.

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

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

delivery efficiency and ease thermal design. This solu-

tion replaces the eight diodes typically found in a passive

PoE rectifier bridge.

The DC2583A accepts up to 71W 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 at

http://www.linear.com/demo/DC2583A

Top Side Bottom Side

dc2583af

DEMO MANUAL DC2583A

typical performance characteristics

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

Figure 2. Efficiency (End-to-End)

performance summary

Specifications are at TA= 25°C

PARAMETER CONDITIONS MIN TYP MAX UNITS

Port Voltage (VPORT) At RJ45 37 57 V

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

Efficiency VPORT = 48V, IOUT = 1.2A 99.2 %

T2P Switching Frequency 840 Hz

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 (%)

DC2583 F02

dc2583af

DEMO MANUAL DC2583A

Quick start proceDure

Power Over Ethernet (PoE) Input

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

and AUX– inputs of the DC2583A.

2. Refer to Figure 3 to evaluate the DC2583A with a

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

used to evaluate the DC2583A, use the setup diagram

as shown in Figure 4.

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

the DC2583A board. Choose a power level from Table

1 and select the corresponding shunt positions.

Table 1. Single-Signature Classification Codes, Power

Levels and Jumper Selection

PD CLASS

ALLOCATED CLASS

POWER AT THE PD INPUT RCLASS JUMPERS

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 JP11 JP12

6 51W JP13 JP14

7 62W JP15 JP16

8 71W JP17 JP18

*Class 0 is not defined for 802.3bt PDs.

4. Connect the output of the IEEE 802.3bt compliant PSE

(see note) to the RJ45 connector (J1) of the DC2583A

using a CAT5e or CAT6 Ethernet cable.

5. After connection has been established, verify that the

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

detected and powered the PD.

6. Verify T2P response with a digital multimeter or an

oscilloscope. The T2P response for the type of PSE

connected to the DC2583A is provided in Table 2.

Note:An 802.3bt PSE has not yet been released. In

the interim, an LTPoE++

compliant PSE (DC1814A-D)

may be used to provide power to the DC2583A. The

LTPoE++ classification will not be 802.3bt compli-

ant, but the PSE will provide a compatible detection

and power output. Specifically, the T2P output of

the DC2583A is different from the behavior stated in

Table2 and will indicate connection to a Type 2 PSE.

Otherwise PD behavior will be unaffected.

Table 2. T2P Response

PSE T2P RESPONSE

NEGOTIATED PD

INPUT POWER

IEEE

Logic High 13W

Logic Low 25.5W

50% Logic High/50% Logic Low,

Toggle at 840Hz (typical)

51W

75% Logic High/25% Logic Low,

Toggle at 840Hz (typical)

71W

LTPoE++, 90W Logic Low 71W

dc2583af

DEMO MANUAL DC2583A

Figure 3. Setup Diagram for DC2583A with a DC/DC Converter, a Microprocessor and an IEEE 802.3bt PSE

Figure 4. Setup Diagram for DC2583A with a Resistive or an Active Load

Quick start proceDure

DC2583 F03

OPTO

IEEE 802.3bt

PSE LOAD

RJ45 RJ45

CAT5e

CAT6 CABLE

VIN

–ENABLE

PSE TYPE

(TO µP)

DC/DC

CONVERTER

DC2583 F04

IEEE 802.3bt

PSE

RJ45 RJ45

CAT5e

CAT6 CABLE

USE LAB_TEST_VOUT–

CONNECTION FOR

RESISTIVE OR ACTIVE LOAD

RESISTIVE OR

ACTIVE LOAD

dc2583af

DEMO MANUAL DC2583A

Quick start proceDure

Auxiliary Supply Input

1. Place and connect test equipment as shown in Figure 5.

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

DC2583A as shown in Figure 5. Turn on the auxiliary

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

output voltage to 48V.

4. Once the LED (D3) on the DC2583A is lit, check the

output voltage using a voltmeter. Output voltage should

be within 37-57V.

5. Verify T2P response with an oscilloscope as shown

in Figure 5. The T2P response during auxiliary power

operation is provided in Table 3.

Figure 5. Setup Diagram for Auxiliary Supply Input

LOAD

DC2583 F05

OPTO

VIN

–

+AUXILIARY

DC POWER

SUPPLY

–

ENABLE

PSE TYPE

(TO µP)

DC/DC

CONVERTER

Table 3. T2P Response During Auxiliary Power Operation

PD CLASS T2P RESPONSE

0–4 Logic Low

5–8 75% Logic High/25% Logic Low,

Toggle at 840Hz (typical)

dc2583af

DEMO MANUAL DC2583A

parts list

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 2 C1, C5 CAP., 0.047µF, X7S, 100V, 10%, 0603 TDK, C1608X7S2A473K080AB

2 0 C2 CAP., OPTION, 0402 OPT

3 1 C3 CAP., 0.047µF, X7R, 100V, 10%, 0805 AVX, 08051C473KAT2A

4 1 CG1 CAP., 1000pF, X7R, 2000V, 10%, 1808 TDK, C4520X7R3D102K130KA

5 4 CT1, CT2, CT3, CT4 CAP, CER, X7R 0.01µF 200V 10%, 0805 AVX, 08052C103KAZ2A

6 1 D2 DIODE, TVS, 58V, 600W, SOD128 NEXPERIA, PTVS58VP1UTP

7 1 D1 DIODE, SCHOTTKY, 100V, 3A NEXPERIA, PMEG10030

8 1 J1 CONN., MOD. JACK, FEMALE, 2.54mm, 8TERMINAL, 1 PORT,

R/A THRU-HOLE

STEWART CONNECTOR, SS-7188S-A-NF

9 2 Q1, Q11 MOSFET, N-CH, 100V, 36.6mΩ, 30A, 91W, LFPAK33 NEXPERIA, PSMN040-100MSE

10 8 Q3, Q4, Q5, Q6, Q7, Q8,

Q9, Q10

MOSFET, N-CH, 100V, 71mΩ, 18A, 65W, LFPAK33 NEXPERIA, PSMN075-100MSE

11 1 R9 RES., 174k, 1%, 0603 NIC, NRC06F1743TRF

12 1 R10 RES., 52.3k, 1%, 0603 NIC, NRC06F5232TRF

13 2 R11, R18 RES., 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA

14 1 R12 RES., 8.2Ω, 1/5W, 5%, 0805 NIC, NRC10J8R2TRF

15 1 R13 RES., 3.3k , 1/10W, 5%, 0603 VISHAY, CRCW06033K30JNEA

16 2 R14, R15 RES., 100k, 1/10W, 5%, 0603 VISHAY, CRCW0603100KJNEA

17 0 R16, R17 RES., OPT, 0805 OPT

18 2 RC1, RC6 RES., 1.00k, 1/8W, 1%, 0805 VISHAY, CRCW08051K00FKEA

19 2 RC2, RC8 RES., 140Ω, 1/8W, 1%, 0805 VISHAY, CRCW0805140RFKEA

20 2 RC3, RC10 RES., 76.8Ω, 1/8W, 1%, 0805 VISHAY, CRCW080576R8FKEA

21 2 RC4, RC12 RES., 49.9Ω, 1/8W, 1%, 0805 VISHAY, CRCW080549R9FKEA

22 1 RC5 RES., 34.8Ω, 1/8W, 1%, 0805 VISHAY, CRCW080534R8FKEA

23 1 RC7 RES., 37.4Ω, 1/8W, 1%, 0805 VISHAY, CRCW080537R4FKEA

24 1 RC9 RES., 46.4Ω, 1/8W, 1%, 0805 PANASONIC, ERJ-6ENF46R4V

25 1 RC11 RES., 64.9Ω, 1/8W, 1%, 0805 VISHAY, CRCW080564R9FKEA

26 1 RC13 RES., 118Ω, 1/8W, 1%, 0805 VISHAY, CRCW0805118RFKEA

27 4 RT1, RT2, RT3, RT4 RES., 75Ω, 1/10W, 5%, 0603 VISHAY, CRCW060375R0JNEA

28 1 T1 TRANSFORMER, ETHERNET, 749022016 WURTH ELEKTRONIK, 749022016

29 0 T4 (ALTERNATE) TRANSFORMER, ETHERNET, EPG4260S-LF PCA EPG4260S-LF

30 0 T4 (ALTERNATE) TRANSFORMER, ETHERNET, ETH1-460LD COILCRAFT ETH1-460LD

31 1 U1 I.C., IEEE 802.3bt PD CONTROLLERS, DFN10, 3mm x 3mm LINEAR TECH., LT4294IDD#PBF

32 1 U2 I.C., PoE IDEAL DIODE BRIDGE CONTROLLER, QFN16-UF,

4mm x 4mm

LINEAR TECH., LT4321IUF#PBF

dc2583af

DEMO MANUAL DC2583A

parts list

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Hardware: For Demo Board Only

1 1 C4 CAP., ALUM. ELECT., 22µF, 100V, 20% SUN ELECTRONIC, 100CE22BS

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

3 1 D3 LED, GREEN, 560nm, 3x2mm, 1206 ROHM, SML-010FTT86L

4 1 D4 DIODE, 12V, 200mW, SOD-323 DIODES INC, MMSZ5242BS-7-F

5 7 E1, E2, E3, E4, E5, E6, E7 TURRET, 0.094" MTG. HOLE MILL-MAX 2501-2-00-80-00-00-07-0

6 1 J2 CONN., MOD. JACK, FEMALE, 2.54mm, 8TERMINAL, 1 PORT,

R/A THRU-HOLE

STEWART CONNECTOR, SS-7188S-A-NF

7 18 JP1-JP18 CONN., HEADER, 1X2, 2mm SULLINS, NRPN021PAEN-RC

8 1 R19 RES., 30k, 1/10W, 5%, 0603 VISHAY, CRCW060330K0JNEA

9 1 RMPS1 RES., 3.0k, 2W, 1%, 2512 TE CONNECTIVITY 35213K0FT

10 4 RT5, RT6, RT7, RT8 RES., 75Ω, 1/10W, 5%, 0603 VISHAY, CRCW060375R0JNEA

11 2 XJP1, XJP2 SHUNT, 2mm SAMTEC, 2SN-BK-G

12 1 PCB, DC2583A DEMO CIRCUIT 2583A

13 2 STENCILS, DC2583A (TOP & BOTTOM) STENCIL DC22583A

dc2583af

DEMO MANUAL DC2583A

schematic Diagram

37V - 57V

DEMO CIRCUIT 2583A

1. ALL RESISTORS AND CAPACITORS ARE 0603

2. ALL RESISTORS TOLERANCE RATING ARE 5%

NOTE 1: UNLESS OTHERWISE SPECIFIED

JUMPER SELECTIONS

CLASS RCLASS JUMPERSPOWER

13W

3.84W

6.49W

13W

25.5W

40W

51W

62W

71W

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.

VPORTP

VPORTN

PWRGD

SIZE

DATE:

.VER.ONCI

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TITLE:

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PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY 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 LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

Wednesday, May 24, 2017

1 2

IEEE 802.3bt POWERED DEVICE

KAUNG H.

N/A

LT4294IDD, LT4321IUF

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY 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 LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

Wednesday, May 24, 2017

1 2

IEEE 802.3bt POWERED DEVICE

KAUNG H.

N/A

LT4294IDD, LT4321IUF

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY 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 LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

Wednesday, May 24, 2017

1 2

IEEE 802.3bt POWERED DEVICE

KAUNG H.

N/A

LT4294IDD, LT4321IUF

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

KAUNG H.PRODUCTION 71-42-501

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

KAUNG H.PRODUCTION 71-42-501

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

KAUNG H.PRODUCTION 71-42-501

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

08051%

RC8

140

0805 1%

PMEG10030ELPX

2 1

47nF

X7R

100V

0805

R16*

0805

RCLS

R14

100K

RC6

1.00K

0805 1%

0.047uF

100V

0603

JP15

TP1

LAB_TEST_VOUT-

PSMN040-100MSE

JP2

Q11

PSMN040-100MSE

LED

22uF

100V

R19

30K

RC13

118

08051%

OPT

0402

VOUT-

RC3

76.8

0805 1%

RC7

37.4

08051%

AUX+

R15

100K

TP3

RC2

140

0805 1%

JP5

R13

3.3K

JP6

R10

52.3K

LT4294IDD

GND

AUX

RCLASS

RCLASS++

GND

5T2P 6

PWRGD 7

HSSRC 8

HSGATE 9

VPORT 10

GND

TP4

VOUT+

JP13

R17

OPT

0805

RCLS++

JP16

JP17

RC4

49.9

0805 1%

174K JP10

RC10

76.8

0805 1%

T2P

RC9

08051%

46.4

RC1

1.00K

0805 1%

JP4

PWRGD

JP7

JP11

JP9

TP2

MMSZ5242BS, 12V

2 1

R12

8.2

0805

AUX-

JP12

RCLASS++

RCLASS

PWRGD

VPORTN

RCLASS

RCLASS++

PWRGD

dc2583af

DEMO MANUAL DC2583A

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

schematic Diagram

DEMO CIRCUIT 2583A

NOTE 2: UNLESS OTHERWISE SPECIFIED

1. ALL RESISTORS AND CAPACITORS ARE 0603

2. ALL RESISTORS TOLERANCE RATING ARE 5%

OUT TO PHY

37V-57V

IN FROM PSE

VPORTP

VPORTN

PWRGD

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY 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 LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

Wednesday, May 24, 2017

2 2

IEEE 802.3bt POWERED DEVICE

KAUNG H.

N/A

LT4294IDD, LT4321IUF

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY 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 LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

Wednesday, May 24, 2017

2 2

IEEE 802.3bt POWERED DEVICE

KAUNG H.

N/A

LT4294IDD, LT4321IUF

SIZE

DATE:

.VER.ONCI

SHEET OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY 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 LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

Wednesday, May 24, 2017

2 2

IEEE 802.3bt POWERED DEVICE

KAUNG H.

N/A

LT4294IDD, LT4321IUF

RT6

PSMN075-100MSE

RT2

VPORTP

RT8

SS-7188S-A-NF

910

RT5

CT4

0.01uF

100V

0805

PSMN075-100MSE

0.047uF

100V

PSMN075-100MSE

CG1

1000pF

2KV

1808

T1 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

CT2

0.01uF

100V

0805

PSMN075-100MSE

RT7

RT1

75 RT4

CT3

0.01uF

100V

0805

LT4321IUF

TG36

IN36

IN45

TG45

TG78

IN78

BG78

BG45

OUTP 12

EN 11

EN 10

OUTN 9

TG12 16

IN12 15

BG1214

BG3613

OUTN

CT1

0.01uF

100V

0805

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

POE_CT12

VPORTP

VPORTN

TG78

POE_CT78

BG78

BG45

TG12

POE_CT12

BG12

BG36

POE_CT12

POE_CT78

POE_CT45

POE_CT36

dc2583af

DEMO MANUAL DC2583A

 LINEAR TECHNOLOGY CORPORATION 2017

LT 0517 • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:

This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT

OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete

in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety

measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union

directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.

If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date

of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU

OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS

FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR

ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims

arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all

appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or

agency certified (FCC, UL, CE, etc.).

No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,

customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.

LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.

Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and

observe good laboratory practice standards. Common sense is encouraged.

This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application

engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

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