EV8007-V-00B
IEEE 802.3af PoE PD Interface
with Buck Converter
The Future of Analog IC Technology
DESCRIPTION
FEATURES
EV8007-V-00B Evaluation Board is designed to
demonstrate the capability of MP8007`s buck
converter function. This board supports IEEE
802.3af PoE compliant Powered Device with
PD interface and buck converter power. It is
targeted for non-isolated 13W PoE application.
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•
•
•
•
•
•
•
The PD interface has all the functions of IEEE
802.3af, including detection, classification,
inrush current, operation current limit as well as
100V Hot-swap MOSFET. The DCDC converter
uses fixed peak current and variable frequency
discontinuous conduction mode (DCM) to
regulate constant output voltage.
The MP8007 is available
(4mmX5mm) package.
in
QFN-28
ELECTRICAL SPECIFICATIONS
Parameter
PoE Input voltage
Adapter Voltage
Symbol
VIN
Value
Units
(1)
37-57
V
VADAPTOR
24-57
V
Output voltage
VOUT
12
V
Output current
IOUT
1
A
Integrated 180V Switching Power MOSFET
Internal 80V Startup Circuit
Up to 3A Programmable Current Limit
Discontinuous Conduction Work Mode
Supports Low-side Switch Buck Converter
Include OLP, OVP and Thermal Protection
Minimal External Components Count
Available in QFN-28 4mmx5mm Package
APPLICATIONS
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Security Camera
VoIP Phones
WLAN Access Points
General Buck Converter
All MPS parts are lead-free, halogen free, and adhere to the RoHS
directive. For MPS green status, please visit MPS website under Quality
Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered
Trademarks of Monolithic Power Systems, Inc.
Note:
1) It requires higher than 40V input for startup, after startup, it can work
down to 37V. It can meet IEEE 802.3af Specifications.
EV8007-V-00B EVALUATION BOARD
(L x W x H) (10.4cm x 4.52cm x 1.5cm)
Board Number
MPS IC Number
EV8007-V-00B
MP8007GV
EV8007-V-00B Rev. 1.0
www.MonolithicPower.com
9/21/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
1
EV8007-V-00B—13W PoE PD INTERFACE WITH BUCK CONVERTER EVB
EVALUATION BOARD SCHEMATIC
R9
0
VIN
CR1
DF02S
VSS
CR2
DF02S
J1
RJ45-8N4-B
J2
8
7
RJ45-8N4-B
T1
PULSE/H5062
23
8
2
MX1+
TD1+
7
5
24 MCT1
4
5
1
TCT1
4
22
MX1-
3
1:1
TD1-
20
RXRX+
TXTX+
5
MX2+
TD2+
MCT2
TCT2
6
3
21
4
2
1
19 MX2-
6
1:1
6
RX-
3
RX+
2
TX-
1
TX+
TD28
17
MX3+
TD3+
MCT3
TCT3
7
18
9
16
MX3-
1:1
TD3-
14
11
MX4+
TD4+
MCT4
TCT4
15
10
13
12
1:1
MX4-
TD4-
VIN
D2
D3
SMAJ58A
R7
3k
C1B
2.2uF
C1A
47uF
R4
NC
NC
R5
24.9k
C4
PGND
D1
PDS3100
L1 22uH
DET
0.1uF
T2P
R6 41.2
VSS
CLASS
PG
ADP GND
Vout
C2A
22uF
C2B
100uF
R1
107k
SW
U1
MP8007
FB1
PGND
VOGND
VCC
VSS
ILIM
FTY
MODE
AUX
R8
3.6k
R2
20k
C3
R3
43.2k 1uF
D4
BAT46W
D6
BZT52C15
PGND
PGND
D5
SS1H10
EV8007-V-00B Rev. 1.0
www.MonolithicPower.com
9/21/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
2
EV8007-V-00B—13W PoE PD INTERFACE WITH BUCK CONVERTER EVB
EV8007-V-00B BILL OF MATERIALS
Qty
Ref
Value
1
C1A
47μF
1
C1B
2.2μF
1
C2A
22μF
1
C2B
100μF
1
C3
1μF
1
C4
0.1uF
1
1
1
R1
R2
R3
107k
20k
43.2k
1
1
1
1
1
1
R4
R5
R6
R7
R8
R9
NC
24.9k
41.2
3k
3.6k
0
1
D1
PDS3100
1
D2
NC
1
1
1
1
D3
D4
D5
D6
SMAJ58A
BAT46W
SS1H10
BZT52C15
1
T1
1
L1
2
J1,J2
2
CR1,
CR2
1
U1
Description
47uF 100V CD284 ECap. 10X12.5mm
Ceramic Cap., 100V,
X7R
Ceramic Cap.,25V,X7R
100uF 25V CD284
ECap6.3X11.5mm
Ceramic Cap,10V,X7R
Ceramic Cap. 100V,
X7R
Film Res,1%
Film Res,1%
Film Res,1%
Film Res,1%
Film Res,1%
Film Res,1%
Film Res,1%
Film Res,1%
3A 100V SUPER
BARRIER RECTIFIER
TVS
100V, DIODE
100V, SCHOTTKY
zener Diode, 15V
LAN-Transformer WE749020011A
LAN
22μH
Isat=3A, DCR=77.6mΩ
RJ Jack / Signal Line
EMI/RFI Filters 6 TRMN
RJ45-8N4-B
BRD/CBLE GRND 8 PIN
BLOCK INDUCTOR
1.0A SURFACE MOUNT
DF02S
GLASS PASSIVATED
BRIDGE RECTIFIER
IEEE 802.3af
MP8007
Compatible PSR Flyback
PD Device
Package
Manufacturer Part Number
DIP
JiangHai
47uF/100V
1210
muRata
GRM32ER72A225KA35L
1210
muRata
GRM32ER71E226KE15L
DIP
JiangHai
100uF/25V
603
muRata
GRM188R71A105KA61D
1206
Murata
GRM319R72A104KA01D
603
603
603
ROYAL
ROYAL
ROYAL
RC0603FR-07107KL
RC0603FR-0720KL
RC0603FR-0743K2L
603
603
603
603
1206
ROYAL
ROYAL
ROYAL
ROYAL
ROYAL
RC0603FR-0724K9L
RC0603FR-0741R2L
RC0603FR-073KL
RC0603FR-073K6L
RC1206FR-070RL
POWERDI5
Diodes
PDS3100
SMA
SOD-123
DO-214AC
SOD-123
Littelfuse
Diodes
VISHAY
Diodes
SMD
Würth
749020011A
TOKO
D104C-#919AS-220M
SMAJ58A
BAT46W-7-F
SS1H10-E3/61T
BZT52C15
RJ45-TAB
Tyco
Electronics
RJ45-8N4-B
DF-S
Diodes Inc
DF02S
QFN-28
MPS
MP8007GV
EV8007-V-00B Rev. 1.0
www.MonolithicPower.com
9/21/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
3
EV8007-V-00B—13W PoE PD INTERFACE WITH BUCK CONVERTER EVB
EVB TEST RESULTS
VIN=48V, VOUT=12V, IOUT=1A, TA=25ºC, unless otherwise noted.
EV8007-V-00B Rev. 1.0
www.MonolithicPower.com
9/21/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
4
EV8007-V-00B—13W PoE PD INTERFACE WITH BUCK CONVERTER EVB
EVB TEST RESULTS (continued)
VIN=48V, VOUT=12V, IOUT=1A, TA=25ºC, because VIN and VOUT have different GND, so the blew
waveforms are referred to VIN in test, unless otherwise noted.
EV8007-V-00B Rev. 1.0
www.MonolithicPower.com
9/21/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
5
EV8007-V-00B—13W PoE PD INTERFACE WITH BUCK CONVERTER EVB
EVB TEST RESULTS (continued)
VIN=48V, VOUT=12V, IOUT=1A, TA=25ºC, because VIN and VOUT have different GND, so the blew
waveforms are referred to VIN in test, unless otherwise noted.
EV8007-V-00B Rev. 1.0
www.MonolithicPower.com
9/21/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
6
EV8007-V-00B—13W PoE PD INTERFACE WITH BUCK CONVERTER EVB
PRINTED CIRCUIT BOARD LAYOUT
Figure 1：Top Silk Layer
Figure 2: Top Layer
Figure 3: Bottom Layer
EV8007-V-00B Rev. 1.0
www.MonolithicPower.com
9/21/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
7
EV8007-V-00B—13W PoE PD INTERFACE WITH BUCK CONVERTER EVB
QUICK START GUIDE
The output voltage of this board is set to 12V. The board layout accommodates most commonly used
components. There are two methods to start MP8007.
Method 1:
1. Connect Load to:
a. Positive (+): VOUT
b. Negative (–): VOGND
2. Plug the cable coming from the PSE into the Ethernet Jack J1. The board will automatically startup.
Method 2:
1. Preset Power Supply to 40V ≤ VIN ≤ 57V. (It can work in 37V ≤ VIN ≤ 57V after power up.)
2. Turn Power Supply off.
3. Connect Power Supply terminals to:
a. Positive (+): VIN
b. Negative (–): VSS
4. Connect Load to:
a. Positive (+): VOUT
b. Negative (–): VOGND
5. Turn Power Supply on after making connections.
6. The MP8007 is enabled on the evaluation board once VIN is applied.
7. To use adapter supply function, connect the adapter`s positive terminal to VIN and negative terminal
to ADPGND, then turn on the adapter, the board will supply itself from adapter.
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
EV8007-V-00B Rev. 1.0
www.MonolithicPower.com
9/21/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
8