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dc1815afc

DEMO MANUAL DC1815A

schematic Diagram

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

VEE

( 55V to 57V )

AGND (+)

VEE (-)

MSD

RESET

VDD

CSRN2512FKR250

CSRN2512FKR250

CSRN2512FKR250

CSRN2512FKR250

ADDRESS

LO

HI

100V

100V

100V

100V

AD0 AD1 AD2 AD3

INT

DGND

VDD

SD1

SD2

SD3

SD4

VEE

AGND

INT

AGND

AGND

OUT1

OUT2

OUT3

OUT4

MAIN SUPPLY IN

TM

2.  INSTALL SHUNTS AS SHOWN.

1.  ALL RESISTORS ARE IN OHMS, 0603.      ALL CAPACITORS ARE IN MICROFARADS, 0603.

NOTE: UNLESS OTHERWISE SPECIFIED

 MPZ2012S102A

FBMH4532HM132-T

ASSEMBLY VERSION      -WATT PSE                     U1

-A                                 38.7W                 LTC4266AIUHF-1 

-B                                52.7W                 LTC4266AIUHF-2

-C                                70W                    LTC4266AIUHF-3

-D                                90W                    LTC4266AIUHF-4 

 MPZ2012S102A

 MPZ2012S102A

FB1 - FB16

2

_

PRODUCTION

DILIAN R.

5/4/11

1206

1206

1206

1808

1808

2KV

2KV

0805

0805

1206

1206

1206

1206

(-3.3V)

_

2a

PWR LEVEL UPDATE

DILIAN R.

10/5/11

_

2b

T1-T4 OPTION

DILIAN R.

3/28/13

MID

AU

TO

SCL

SDAOUT

SCL

SDAIN

OUT4

OUT1

OUT3

OUT2

SCL

SDAIN

SDAOUT

VDD

VDD

VEE

VEE

VEE

VEE

VDD

VDD

VEE

VDD

VDD

SIZE

DATE:

.V

ER

.O

CI

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

2

Thursday, March 28, 2013

1

3

QUAD PORT LTPoE++      PSE CONTROLLER

JK

DILIAN R.

N/A

LTC4266AIUHF FAMILY

DEMO CIRCUIT 1815A

SIZE

DATE:

.V

ER

.O

CI

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

2

Thursday, March 28, 2013

1

3

QUAD PORT LTPoE++      PSE CONTROLLER

JK

DILIAN R.

N/A

LTC4266AIUHF FAMILY

DEMO CIRCUIT 1815A

SIZE

DATE:

.V

ER

.O

CI

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

2

Thursday, March 28, 2013

1

3

QUAD PORT LTPoE++      PSE CONTROLLER

JK

DILIAN R.

N/A

LTC4266AIUHF FAMILY

DEMO CIRCUIT 1815A

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO

REV

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO

REV

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO

REV

E6E6

R2 10K

R2 10K

RS3 0.25

RS3 0.25

R1

10K

R1

10K

S7S7

RS2 0.25

RS2 0.25

R13 1.0K

R13 1.0K

C47 0.22uF X7R

C47 0.22uF X7R

Q3

FDMC86102

Q3

FDMC86102

JP5

HI

LO

MID

JP5

HI

LO

MID

1

3

2

D10 S1B

D10 S1B

C36 0.22uF X7R

C36 0.22uF X7R

D7

AMBER

D7

AMBER

D27 S1B

D27 S1B

E5E5

C66 1uF 100V

C66 1uF 100V

+

C2 10uF 100V

+

C2 10uF 100V

C22 0.22uF X7R

C22 0.22uF X7R

D9 S1B

D9 S1B

D5

AMBER

D5

AMBER

S3S3

C5

1000pF

C5

1000pF

J3J3

R5

100K

R5

100K

D1

3.9V

D1

3.9V

E9E9

R25 4.7K

R25 4.7K

S4S4

S5S5

E8E8

E4E4

E1E1

J2J2

RL1 1.0K

RL1 1.0K

SMAJ58A

D3 SMAJ58A

D3

D26 S1B

D26 S1B

5.0SMDJ60A

D18

5.0SMDJ60A

D18

D8 S1B

D8 S1B

RS1 0.25

RS1 0.25

Q5

ZXTP19100CG

Q5

ZXTP19100CG

5.0SMDJ60A

D20

5.0SMDJ60A

D20

Q2

FDMC86102

Q2

FDMC86102

R9 1

R9 1

C6

1000pF

C6

1000pF

D23 5.6V

D23 5.6V

1

3

C64 1uF

100V

C64 1uF

100V

E3E3

CLD1

CCLM2700

CLD1

CCLM2700

Q4

FDMC86102

Q4

FDMC86102

JP4

HI

LO

AUTO

JP4

HI

LO

AUTO

1

3

2

R10

10

R10

10

D24 S1B

D24 S1B

RS4 0.25

RS4 0.25

D25 S1B

D25 S1B

E10E10

D11 S1B

D11 S1B

R14 4.7K

R14 4.7K

C65 0.1uF

C65 0.1uF

Q1

FDMC86102

Q1

FDMC86102

D6

RED

D6

RED

E2E2

S6S6

E7E7

R15 4.7K

R15 4.7K

E14E14

U1

LTC4266AIUHF

U1

LTC4266AIUHF

VEE

26

AGN

D

18

OUT 4

21

GATE 4

20

SENSE 4

19

SENSE 3

22

GATE 3

23

OUT 3

24

SENSE 2

27

GATE 2

28

OUT 2

29

SENSE 1

30

GATE 1

31

OUT 1

32

VEE

25

DGND

10

AD

0

7

AD

1

6

AD

2

5

AD

3

4

SC

L

38

SDAIN

3

SD

AOU

T

1

INT

37

SD

1

14

SD

2

15

SD

3

16

SD

4

17

VDD

13

AUTO

33

MID

36

RESET

35

MSD

34

VEE

39

S2S2

S1S1

1 2 3 4

8 7 6 5

C58 0.22uF X7R

C58 0.22uF X7R

Summary of Contents for LTC4266A

Page 1: ...e trademarks of Linear Technology Corporation All other trademarks are the property of their respective owners an I2C serial interface operable up to 1MHz Optional I2C control is accessed on the DC181...

Page 2: ...ables AUTO pin high mode 3 Connect a 55V to 57V power supply across AGND and VEE Size the power supply considering the maximum power delivered to the PDs 4 Connect with an Ethernet cable an 802 3at Ty...

Page 3: ...E PDs up to the power level rating of the LTC4266A version used For full control via I2C the AUTO pin is to be pulled low Modification of the AUTO pin jumper requires a device reset or power cycle End...

Page 4: ...er area or trace between the sense resistor and the MOSFET Figure 3 LTC4266A Key Application Components for Board Placement The VEE side of the sense resistor must connect to a thick VEE plane through...

Page 5: ...asshowninFigure5 EachLTC4266A has its own copper fill area on the surface that connects to the VEE plane with multiple large vias The net effect is to reduce the layout problem down to 4 port groups t...

Page 6: ...6 dc1815afc DEMO MANUAL DC1815A PCB Layout Layer 2 Plane Layer Layer 3 Plane Layer Layer 4 Bottom Layer Bottom Silkscreen...

Page 7: ...ROHM SML 010DTT86L 19 4 D12 D15 LED GREEN ROHM SML 010FTT86L 20 1 D6 LED RED ROHM SML 010VTT86L 21 16 F 1 F16 FUSE 3A 63VDC 1206 BEL FUSE C1Q3 22 1 R9 RES 0603 1 5 1 10W VISHAY CRCW06031R00JNEA 23 1...

Page 8: ...A DC1815A B 1 1 DC1815A GENERAL BOM 2 16 FB1 FB16 FERRITE BEAD 1k 0805 TDK MPZ2012S102A 3 1 U1 IC LTC4266A 2 QUAD PORT 52 7W PSE CONTROLLER LINEAR LTC4266AIUHF 2 4 1 FAB PRINTED CIRCUIT BOARD DEMO CIR...

Page 9: ...FOR USE WITH LINEAR TECHNOLOGY PARTS SCALE NONE www linear com 2 Thursday March 28 2013 1 3 QUAD PORT LTPoE PSE CONTROLLER JK DILIAN R N A LTC4266AIUHF FAMILY DEMO CIRCUIT 1815A SIZE DATE V E R O N C...

Page 10: ...1815A REVISION HISTORY DESCRIPTION DATE APPROVED ECO REV REVISION HISTORY DESCRIPTION DATE APPROVED ECO REV REVISION HISTORY DESCRIPTION DATE APPROVED ECO REV CT5 0 01uF 0805 CT5 0 01uF 0805 FB3 FB3...

Page 11: ...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 2 Thurs...

Page 12: ...NCLUDING 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...

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