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© 2012 Fairchild Semiconductor Corporation FEBFDMQ8203_13W • Rev. 1.0.0

User Guide for

FEBFDMQ8203_13 W GreenBridge™ Evaluation Kit

for Power Over Ethernet 13 W Flyback DC-DC

MLP 4.5x5 GreenBridge™ SSOT-6 150 V MOSFET SSOT-3 30 V MOSFET

Featured Fairchild Products:

FDMQ8203, FDC86244, FDN537N

Direct questions or comments about this evaluation board to:

“Worldwide Direct Support”

Fairchild Semiconductor.com

http://www.fairchildsemi.com/cf/

© 2012 Fairchild Semiconductor Corporation 2 FEBFDMQ8203_13W • Rev. 1.0.0

Table of Contents

1. Introduction ............................................................................................................................... 3

1.1. Description ....................................................................................................................... 3 1.2. Features ............................................................................................................................ 3

2. Evaluation Board Specifications ............................................................................................... 3

3. Photographs............................................................................................................................... 4

4. Printed Circuit Board ................................................................................................................ 5

5. Schematic .................................................................................................................................. 6

6. Bill of Materials ........................................................................................................................ 8

7. Electrical Characteristics ........................................................................................................ 10

8. Setup and Test Procedure ........................................................................................................ 11

8.1. Hardware Connector Description ................................................................................... 11

9. Performance of Evaluation Board ........................................................................................... 12

10. Revision History ..................................................................................................................... 13


The following user guide supports the evaluation kit for high-efficiency, IEEE802.3af, Class3 Power over Ethernet Power Device (PoE PD) Flyback DCDC with PoE interface controller. It should be used in conjunction with the FDMQ8203 datasheet as well as Fairchild’s application notes and technical support team. Please visit Fairchild’s website at www.fairchildsemi.com.

1. Introduction This board is designed to rectify the positive and negative power source from Power Source Equipment (PSE) and regulate 48 V (36 V ~ 57 V) to provide 5 VOUT at maximum 2.6 A with 250 kHz switching frequency and over 90% of the total efficiency in the compact power density. It meets the required specification under IEEE802.3af.

1.1. Description This kit contains the MLP 4.5x5 GreenBridge™ MOSFET evaluation board.

1.2. Features GreenBridge™ FDMQ8203 quad P&N-Channel MOSFET Flyback Primary Switch FDC86244 Single N-Channel MOSFET Flyback Secondary Switch FDN537N Single N-Channel MOSFET Controller IEEE802.3at PD with Flyback Controller Output-Voltage Range 5 V, Adjustable by R39 and R37 Switching Frequency 250 kHz, Adjustable by C55 Maximum Output Current 2.6 A, Limited by Power Component

2. Evaluation Board Specifications Table 1. MOSFET Parameters

Part Number

Location Package BVDSS (V)

RDS(ON) [mΩ]

at 10 VGS

Qg [nC]

at 10 VGS COSS [pF]

Max. Typ. Typ.

FDMQ8203 Q1, Q4

MLP4.5x5 100 110 2.9 41.0

Q2, Q3 -80 190 13 46

FDC86244 Single SSOT-6 150 144.0 4.2 32.0

FDN537N Single SSOT-3 30 28 5.3 135

D:%5CMy%20Documents%5C%EB%82%B4%20%EB%AC%B8%EC%84%9C%5C%EC%97%85%EB%AC%B4%5CEVB%5CTest%20Report%5CFEB-L020_FL7730_8.4W%5Cv110_F116%5CFinal%5Cwww.fairchildsemi.com


3. Photographs Size = 70 X 60 mm.

Figure 1. Top Side View of Evaluation Kit

Figure 2. Bottom Side View of Evaluation Kit


4. Printed Circuit Board PCB Layout (70 mm x 60 mm, 4-Layer).

Figure 3. SST (Component Side) Layer Figure 4. SSB (Component) Layer

Figure 5. TOP & SMT Layer Figure 6. BOT & SMB Layer

Figure 7. INNER1 (GND) Layer Figure 8. INNER2 (POWER) Layer


5. Schematic

Figure 9. GreenBridge™ Block Schematic

J28

sup

porter

11

J29

supp

orte

r

11

J31

supp

orter

11

J3

0s

upp

orter

11

C69

1nF

C7

01

nF

P4

8V

R62

NC

R61

0

R6

3N

C

T2P

34 5

75Ohm X 4

12nF X 4 2

1000pF / 2KV

D63

SM

AJ

58A

C7

30.0

82uF

/100

V

J11

MID

+ 11

N48

V

J12

MID

- 11

P4

8V

N48

V

R5

22

0K

R5

3

20K

Q4

1M

MB

T22

22A

Q4

2M

MB

T290

7A

D50

MM

5Z1

0VD

51

1N

414

8WS

D5

21

N41

48W

SD

53

MM

5Z

10V

R5

42

0K

R5

52

0KR

59

20K

Q4

3M

MB

T22

22A

Q4

4M

MB

T29

07A

D54

MM

5Z1

0V

D5

61N

4148

WS

D5

51N

4148

WS

D57

MM

5Z1

0VQ

45F

DM

Q8

203

1 2 3 4 5 6789101112

13141516

R56

20K

R57

20K

Q46

MM

BT2

222

A

Q47

MM

BT

2907

A

D5

8M

M5

Z10

VD

59

1N41

48W

S

D6

01

N41

48W

SD

61

MM

5Z10

VQ

48

FD

MQ

820

3

1 2 3 4 5 6789101112

13141516

R5

8

20K

Q4

9M

MB

T22

22A

Q5

0M

MB

T29

07A

D4

71N

414

8WS

D46

MM

5Z

10V

D4

81

N41

48W

SD

49M

M5Z

10V

P48

V

J7

RX

CT 1

1

J8

TXC

T 11

R6

02

0k

OUT TO PHY

IN FROM PSE

8 1

J23

082

6-1x1

t-gh-f

TRC

T3

1

TR

D3

-2

TRD

3+

3

TRD

2+

4

TR

D2

-5

TRC

T2

6

TRC

T4

7TR

D4

+8

TR

D4

-9

TR

D1

-1

0TR

CT

11

2TR

D1

+1

1

TXC

T1

3

RX

CT

14

MID

+1

5

MID

-1

6

SHIELD22 SHIELD21

YELLOW_C17

YELLOW_A18

GREEN_C19

GREEN_A20

67

C7

11n

F

C72

1n

FC

74

1nF

C7

51n

F

C7

61

nFC77

1nF


Figure 10. PoE Power Device Controller and Flyback DC-DC Block Schematic

R19

20

R20

20K/2012

C43

22uF/16V

/1210

0

0

L5PE

-68386N

L

R2

24.7

+

10uF/100V C24

R26

12K

C25

2.2uF

/100V/1210

N48V

P4

8VR

27150/2012

C52

2.2nF

D7

MB

R0540

R28

47

C53

1.5nF

R29

5.1

R30

NC

C54

3.3nF

U4

LTC4269-1

SH

DN

1

T2P2

RC

LAS

S3

NC

4

VP

OR

TN5

VP

OR

TN6

NC

7

NC

8

SG

9

Vc

c10

ton11

EN

DLY

12

SY

NC

13

SF

ST

14

OS

C15

FB

16V

CM

P17

UV

LO18

SE

NS

E-

19S

EN

SE

+20

CC

MP

21R

CM

P22

RG

DLY

23P

G24

NC

25V

NE

G26

VN

EG

27N

C28

PW

RG

D29

PW

RG

D_B

AR

30N

C31

VP

RO

TP32

GND33

C55

33pFR

3110k

T2PO

E13P

-50L

1 24 3

8 7 9 10

J21P

WR

GD

11

R32

NC

C56

NC

C57

1nFR

3314K

1%

R34

39K 1%

R35

30ohm 1%

0.1uF

C59

R36

100k

C60

22uF/16V

/1210

PC

P201

NC

C61

4700pF

/250V/1808

C62

100pF/2012

R37

3K

1%

0 R38

0.03 1/2W

R39

27K 1%

Q12

MM

BT2222A

Q11

MM

BT2907A

R40

750

C64

1uF

C6

31uF

R41

39K

D8

MB

R0540

R4

215

R43

10K

C6

6

22uF

/16V/1210

C65

22uF/16V

/1210

R44

100

J17V

PO

RT_P

11

L6

SD

6020-8r9

J18

VP

OR

T_N 11

C67

1uF

0

J22-V

out

11

J19+V

out

11

Q6

FD

C86244

3

25

1

64

Q7

FD

N53

7N

.1

.2

.3

T2P

J16G

ND 1

1

0

D6

BA

S21


6. Bill of Materials Table 2. Bill of Materials

Item Qty. Reference Part Name Vender Comment

1 1 C24 EEE2AA100UP Panasonic 10 µF / 100 V

2 1 C25 GRM32ER72A225KA35 Murata 2.2 µF / 100 V

3 4 C43, C60, C65, C66 C3225X7RIC226M TDK 22 µF / 16 V / 3216

4 1 C52 2.2 nF / 1608 Any

5 1 C53 1.5 nF / 1608 Any

6 1 C54 3.3 nF / 1608 Any

7 1 C55 33 pF / 1608 Any

8 6 R30, R32, C56, R62,

R63, PCP201 NC

9 9 C57, C69, C70, C71,

C72, C74, C75, C76, C77 1 nF / 1608 Any

10 1 C59 0.1 µF / 1608 Any

11 1 C61 GA343D Murata 4700 pF / 250 V

12 1 C62 100 pF / 2012 Any

13 3 C63, C64, C67 1 µF / 1608 Any

14 1 C73 C0805C823K1RACTU Kemet 0.082 µF / 100 V

15 1 D6 BAS21 Fairchild Semiconductor

16 2 D7, D8 MBR0540 Fairchild Semiconductor

17 8 D46, D49, D50, D53,

D54, D57, D58, D61 MM5Z10V Fairchild Semiconductor 10 V Zener Diode

19 8 D47, D48, D51, D52,

D55, D56, D59, D60 1N4148WS Fairchild Semiconductor

20 1 D63 SMAJ58A Diodes TVS Diode

21 1 J23 0826-1G1T-GH-F Belfuse RJ45 with

Transformer

22 1 L5 PE-68386NL Pulse trans

23 1 L6 SD6020-8R9 Coiltronics 8.2 µH

24 1 Q6 FDC86244 Fairchild Semiconductor 150 V 144 mΩ

MOSFET

25 1 Q7 FDN537N Fairchild Semiconductor 30 V 28 mΩ

MOSFET

26 5 Q11, Q42, Q44, Q47, Q50 MMBT2907A Fairchild Semiconductor

27 5 Q12, Q41, Q43, Q46, Q49 MMBT2222A Fairchild Semiconductor

28 2 Q45, Q48 FDMQ8203 Fairchild Semiconductor GreenBridge™

Quad MOSFET

29 1 R19 20 Ω / 2012 Any

30 1 R20 20 kΩ / 2012 Any

31 1 R22 4.7 Ω / 1608 Any

32 1 R26 12 kΩ / 1608 Any

33 1 R27 150 Ω / 2012 Any

34 1 R28 47 Ω / 1608 Any

35 1 R29 5.1 Ω / 1608 Any

36 2 R31, R43 10 kΩ / 1608 Any


Bill of Materials (Continued)

Item Qty. Reference Part Name Vender Comment

37 1 R33 14 kΩ 1% / 1608 Any

38 1 R34 39 kΩ / 1% / 1608 Any

39 1 R35 45.3 Ω / 1608 Any

40 1 R36 100 kΩ / 1608 Any

41 1 R37 3 kΩ / 1% / 1608 Any

42 1 R38 0.03 mΩ / 0.5 W HMR Shunt Resistor

43 1 R39 24 kΩ / 1% / 1608 Any

44 1 R40 750 Ω / 1608 Any

45 1 R41 39 kΩ / 1608 Any

46 1 R42 15 Ω / 1608 Any

47 1 R44 100 Ω / 1608 Any

48 9 R52, R53, R54, R55,

R56, R57, R58, R59, R60 20 kΩ / 1608 Any

49 1 R61 0 Ω / 1608 Any

50 1 T2 POE13P-50L Coilcraft 13 W PoE

Transformer

51 1 U4 LTC4269-1 LTC PoE Flyback IC


7. Electrical Characteristics

Table 3. Electrical Specification

Parameter Value Remark

GreenBridge™ FDMQ8203 Quad P&N-Channel MOSFET, Fairchild Semiconductor

Flyback Primary Switch FDC86244 Single N-Channel MOSFET, Fairchild Semiconductor

Flyback Secondary Switch FDN537N Single N-Channel MOSFET, Fairchild Semiconductor

Controller IEEE802.3at PD with Flyback Controller

VOUT Range 5 V Adjustable by R39 and R37

Switching Frequency 250 kHz Adjustable by C55

Maximum IOUT 2.6 A Limited by Power Component


8. Setup and Test Procedure Table 4. Test Point Descriptions

Test Point Label Descriptions

J17 P48 V Measurement test point for rectified positive input voltage

J18 N48 V Measurement test point for rectified negative input voltage

J16 GND Measurement test point for input voltage return

J19 +VOUT Measurement test point for output voltage

J22 -VOUT Measurement test point for output voltage return

8.1. Hardware Connector Description The evaluation kit is fully assembled and tested. Follow the steps below to verify board operation.

1. Use one of the following methods to power the evaluation kit:

If network connectivity is required: Connect a CAT5 Ethernet network cable from the evaluation kit input port RJ45 connector to the corresponding PSE Ethernet LAN connection, which provides power to the evaluation kit. J21 connector provides an interface with the Ethernet data signals only.

If network connectivity is not required: Connect a -48 V DC power supply between the TXCT and RXCT. OR connect a -48 V DC power supply between the MID+ and MID-.

Caution: Do not turn on the power supply until all connections are completed.

2. Activate the PSE power supply or turn on the external DC power supply.

3. Using a voltmeter, verify that the evaluation kit provides +5 V across the +VOUT and –VOUT pins. –VOUT is isolated from the evaluation kit’s input N48 V and GND pins.


9. Performance of Evaluation Board Figure 11 and Figure 12 show measured data.

Figure 11. Efficiency & Power Loss at VOUT=5 V, Soaking=5 Minutes, fSW=250 kHz

Figure 12. Thermal Performance at VIN=48 V, VOUT=5 V, IOUT= 2.6 A, Soaking=5 Minutes,

fSW=250 kHz

0.40

0.60

0.80

1.00

1.20

1.40

1.60

1.80

2.00

78

80

82

84

86

88

90

92

0.5 0.8 1.1 1.4 1.7 2.0 2.3 2.6

Eff

icie

ncy

(%)

Load(A)

Efficiency & Power loss

36V Efficiency48V Efficiency57V Efficiency36V Power loss48V Power loss57V Power loss

GreenBridgeTM

FDMQ8203: 31°C

Flyback PrimaryFDC86244: 38.3°C

Flyback Secondary

FDN537N: 48.1°C


10. Revision History Rev. Date Description

0.1.0 February 13, 2012 Initial Release

1.0.0 November 28, 2012 Reformat to template Proofread and correct content

WARNING AND DISCLAIMER

Replace components on the Evaluation Board only with those parts shown on the parts list (or Bill of Materials) in the Users’ Guide. Contact an authorized Fairchild representative with any questions.

This board is intended to be used by certified professionals, in a lab environment, following proper safety procedures. Use at your own risk. The Evaluation board (or kit) is for demonstration purposes only and neither the Board nor this User’s Guide constitute a sales contract or create any kind of warranty, whether express or implied, as to the applications or products involved. Fairchild warrantees that its products meet Fairchild’s published specifications, but does not guarantee that its products work in any specific application. Fairchild reserves the right to make changes without notice to any products described herein to improve reliability, function, or design. Either the applicable sales contract signed by Fairchild and Buyer or, if no contract exists, Fairchild’s standard Terms and Conditions on the back of Fairchild invoices, govern the terms of sale of the products described herein.

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION.

As used herein:

1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.

2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

ANTI-COUNTERFEITING POLICY

Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com, under Sales Support.

Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise. Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.

EXPORT COMPLIANCE STATEMENT

These commodities, technology, or software were exported from the United States in accordance with the Export Administration Regulations for the ultimate destination listed on the commercial invoice. Diversion contrary to U.S. law is prohibited.

U.S. origin products and products made with U.S. origin technology are subject to U.S Re-export laws. In the event of re-export, the user will be responsible to ensure the appropriate U.S. export regulations are followed.

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ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patentcoverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liabilityarising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/orspecifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customerapplication by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are notdesigned, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classificationin a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorizedapplication, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, andexpenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if suchclaim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. Thisliterature is subject to all applicable copyright laws and is not for resale in any manner.

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