EVBUM2028DB Evaluation Boards
“
Product Information
Specifications:
- Input Voltage, PoE Input: 36 – 57 V
- Output Voltage: 12 V
- Output Current: Up to 2.5 A
- Oscillator Frequency: 250 kHz
- Output Ripple: Up to 170 mV
- Efficiency: Up to 88%
Product Usage Instructions:
1. Board Connection:
Connect the NCP1081SPCGEVB to your PoE source using the RJ45
connectors as described in Table 2.
2. Power Input:
Ensure that the input voltage does not exceed 57 V to prevent
damage to the evaluation board.
3. Output Connection:
Connect your device to the data output RJ45 connector for
receiving the converted power supply.
4. Load Limitation:
Do not exceed the specified 30 W load limit on the evaluation
board to avoid permanent damage.
5. Safety Precautions:
Avoid touching the switching MOSFET voltages on the board to
prevent electrical hazards.
Frequently Asked Questions (FAQ):
Q: What is the purpose of the NCP1081SPCGEVB?
A: The NCP1081SPCGEVB is a PoE power splitter that converts
Ethernet cable voltage to a lower output voltage for powering
devices.
Q: What are the key specifications of the evaluation
board?
A: The input voltage range is 36-57 V, output voltage is 12 V,
output current can reach up to 2.5 A, with an efficiency of up to
88%.
Q: How should I handle the evaluation board to prevent
damage?
A: Avoid exceeding the specified input and output values, do not
load the board with more than 30 W, and ensure the input voltage
stays within the safe range of 36-57 V.
“`
NCP1081SPCGEVB
Compact, high efficiency, 30W Reference platform with the NCP1081 Evaluation Board User’s Manual
http://onsemi.com
EVAL BOARD USER’S MANUAL
Board Details The NCP1081SPCGEVB implements a PoE power
splitter that converts the voltage on the Ethernet cable to a lower voltage. The board is equipped with 2 RJ45 connectors, one connector serves as the data and power input and the other connector is the data output. Ethernet data is untouched by the board and simply forwarded.
Warnings Close to the switching MOSFET voltages on the board
may exceed 200 V (@250 kHz). Temperature of board and its components may exceed 85°C during normal operation. The Evaluation board was designed to operate correctly under these conditions.
The input voltage should never exceed 57 V nor should the evaluation board be loaded with loads higher than the specified 30 W. Exceeding the specified input and output values could permanently damage the board.
Table 1. EVALUATION BOARD SPECIFICATIONS
Characteristic
Input Voltage, PoE Input
Output Voltage
Output Current
Oscillator Frequency
Output Ripple
Efficiency
Figure 1. Front Side of EVB
Figure 2. Back Side of EVB
Min
Typ
Max
Unit
36
–
57
V
–
12
–
V
–
–
2.5
A
–
250
–
kHz
–
–
170
mV
–
–
88
%
© Semiconductor Components Industries, LLC, 2011
1
December, 2011 – Rev. 0
Downloaded from Arrow.com.
Publication Order Number: EVBUM2028/D
NCP1081SPCGEVB
Table 2. BOARD CONNECTOR DESCRIPTION
Connector
Pin
Description
J4
1
TX+/BI_DA+, Data and Power Input, Pair 1, Mode A
2
TX-/BI_DA-, Data and Power Input, Pair 1, Mode A
3
RX+/BI_DB+, Data and Power Input, Pair 2, Mode A
4
NC/BI_DC+, Data and Power Input, Pair 1, Mode B
5
NC/BI_DC+, Data and Power Input, Pair 1, Mode B
6
RX-/BI_DB-, Data and Power Input, Pair 2, Mode A
7
NC/BI_DD+, Data and Power Input, Pair 2, Mode B
8
NC/BI_DD-, Data and Power Input, Pair 2, Mode B
J1
1
TX+/BI_DA+, Data Output
2
TX-/BI_DA-, Data Output
3
RX+/BI_DB+, Data Output
4
NC/BI_DC+, Data Output
5
NC/BI_DC+, Data Output
6
RX-/BI_DB-, Data Output
7
NC/BI_DD+, Data Output
8
NC/BI_DD-, Data Output
JOUT
12V
12 V Regulated Output
GND
GND Regulated Output
3
12 V Regulated Output
Figure 3. Layout (Top)
Downloaded from Arrow.com.
Figure 4. Layout (Bottom)
http://onsemi.com 2
NCP1081SPCGEVB
Figure 5. All Layers and Dimensiones
Figure 6. Schematic
Downloaded from Arrow.com.
http://onsemi.com 3
NCP1081SPCGEVB
Table 3. BILL OF MATERIALS
Desig- Qua Description nator ntity
Value
U1
1
Power over
NCP1081
Ethernet
controller
C1,
5
C2,
C3,
C4,
Cf1
Capacitor SMD
100n/50V
Cf
1
Capacitor Polar
10u/20V
Cfb1
1
Capacitor SMD
39n/50V
Cfb2
1
Capacitor SMD
12n/50V
Cgnd
1
Capacitor SMD
2200p/2kV
Cline,
3
Cpd1,
Cpd2
Capacitor SMD
100n/100V
Cout
1
Capacitor Polar
68u/25V/5 5mR
Cpd
1
Capacitor Polar
100u/63V
Csn1
1
Capacitor SMD
100p/200V
Csn2
1
Capacitor SMD
470p/200V
Css
1
Capacitor SMD
47n/50V
Cvdd
1
h
Capacitor SMD
2.2u/16V
Cvddl
1
Capacitor SMD
470n/50V
T3
1
PoE Plus
SM-00112
Transformer
Dbr1,
6
SMD Schottky MBRS110
Dbr2,
Rectifier
0T3G
Dbr3,
Dbr4,
Dbr5,
Dbr6,
Dbw,
2
Dgate
SMD Switching
Diode
BAS16HT 1G
Dsec
1
SMD Schottky 12CWQ06
Rectifier
FNPBF
Dsn,
2
SMD Ultrafast MURS120
Dsn1
Rectifiers
T3G
Zbr3,
2
Zbr4
SMD Zener
MMSZ16T 1G
Zline
1
SMD TVS Zener
1SMA58A T3G
Ztvs
1
SMD TVS Zener
1SMB100 AT3G
J1, J4
2
8 Position 8
Contact
(8P8C)
modular jack
communication
s connector
RJ45
L1
1
Drum Core
10uH/3A
Choke
Tolerance
Footprint Manufacturer
TSSOPEP ON Semiconductor 20
10%
0805-C-S
Walsin
10% 10% 10% 10% 10%
C-TANT-B 0805-C-S 0805-C-S
1812 1206-C
AVX AVX AVX Walsin AVX
10%
C-TANT-E
AVX
20% 10%
CRD10.0L 17.0RM5.0
0805-C-S
Hitano AVX
10%
0805-C-S
AVX
10%
0805-C-S
AVX
(+80%) 0805-C-S
AVX
to
(-20%)
10%
0805-C-S
AVX
EFD20
NUFLUX
403A-03 ON Semiconductor
SOD323 ON Semiconductor
DPAK
Vishay
403A-03 ON Semiconductor
SOD123 ON Semiconductor
SMA
403A-03
95501-288 1
ON Semiconductor / Multicomp
ON Semiconductor / Multicomp
MOLEX
10X12
Prismatic
Manufacturer Part Number
NCP1081DEG
Substitution Lead Allowed Free
No
Yes
0805B104K500CT
Yes
Yes
TAJB106K020R 08055C393KAT2A 08055C123KAT2A 1812B222K202LT 12061C104KAT2A
TPME686K025R0055 EXR101M63
08052A101JAT2A 08052C47KJAT2A 08055C473KAT2A 0805YC225MAT2A
08055C474KAZ2A SM-00112
MBRS1100T3G
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
Yes
BAS16HT1G
12CWQ06FNPBF
MURS120T3G
MMSZ16T1G
1SMA58AT3G / SMAJ58A
1SMB100AT3G / SMAJ58A 95501-2881
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
9404037403
No
Yes
Downloaded from Arrow.com.
http://onsemi.com 4
NCP1081SPCGEVB
Table 3. BILL OF MATERIALS
Desig- Qua Description nator ntity
Value
Led
1
LED
KP-2012S
GC
Q1
1
MOSFET
Si7462DP
N-CHANNEL
Q4
1
MOSFET
FDS3992
N-CHANNEL
Qgate
1
Transistor PNP
Rbias
2
Resistor SMD
1, Rsl
BFT92 5.1k
Rbias
1
Resistor SMD
20k
2
Rbr3,
3
Resistor SMD
Rbr4,
Rosc
Rbw,
2
Resistor SMD
Rsn2
150k 75
Rclas
1
Resistor SMD
s
Rcs
1
Resistor SMD
30.1 0.1/3W
Rdet1
1
Resistor SMD
24.9k
Rdet2
1
Resistor SMD
845
Rfb1
1
Resistor SMD
15k
Rfb2
1
Resistor SMD
3.92k
Rfb3
1
Resistor SMD
820
Rgate
1
Resistor SMD
10
Rilim1
1
Resistor SMD
44.2K
Rinru
1
Resistor SMD
sh
Rled
1
Resistor SMD
121k 1k
Rsn1
1
Resistor SMD 330E /1W
T1,
2
WE-LAN
POE+
T2
SMD-10/100
350uH
BASE T
OCL
720mA
IDC
U2
1
HIGH
PS2801-1-
ISOLATION
F3-A
VOLTAGE
SSOP
PHOTOCOUP
LER
U3
1 Programmable TL432BID
Shunt Voltage
BZTG4
Reference
Csi
1
Capacitor
NC
Csn
1
Capacitor
NC
Zbr1,
2
SMD Zener
NC
Zbr2
Rbr1,
2
Resistor SMD
NC
Rbr2
Rdet1
1
Resistor SMD
NC
‘
Rsn
1
Resistor SMD
NC
Q2,
2
P-Channel
NC
Q3
30V (D-S)
MOSFET
Tolerance
5% 1% 1%
1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 1% 5% 5% 2%
Footprint 0805-D-S SOPP8
SO-8 SOT23 0805-R-S 0805-R-S 0805-R-S
Manufacturer EVERLIGHT
Vishay Siliconix Fairchild Philips Walsin Walsin Walsin
Manufacturer Part Number
17-21SYGC/S530-E2/T R8
Si7462DP
Substitution Lead Allowed Free
Yes
Yes
No
Yes
FDS3992
No
Yes
BFT92
Yes
Yes
WR08X512JTL
Yes
Yes
WR08X2002FTL
Yes
Yes
WR08X1503FTL
Yes
Yes
0805-R-S
Walsin
WR08X750JTL
Yes
Yes
0805-R-S
Yageo
RC0805FR-0730R1L
Yes
Yes
2512-S 0805-R-S 0805-R-S 0805-R-S 0805-R-S 0805-R-S 0805-R-S 0805-R-S 0805-R-S
Bourns Walsin Yageo Walsin Walsin Yageo Walsin Walsin Walsin
CRA2512-FZ-R100ELF
Yes
Yes
WR08X2492FTL
Yes
Yes
RC0805FR-07845RL
Yes
Yes
WR08X1502FTL
Yes
Yes
WR08X3921FTL
Yes
Yes
RC0805FR-07820RL
Yes
Yes
WR08X10R0FTL
Yes
Yes
WR08X4422FTL
Yes
Yes
WR08X1213FTL
Yes
Yes
0805-R-S 2512-S SMD
Yageo Walsin Wurth-Elektronik
RC080JR-07KL WR25X331JTL
749012011
Yes
Yes
Yes
Yes
No
Yes
SSOP4
CEL
PS2801-1
No
Yes
SOT23
Texas-Instruments
TL432BIDBZTG4
0805-C-S 1206-C SOD123
ON Semiconductor
0805-R-S
0805-R-S
2512-S
POWERP ACK
1212-8
Vishay
MMSZ16T1G Si7113
No
Yes
Downloaded from Arrow.com.
http://onsemi.com 5
onsemi,
, and other names, marks, and brands are registered and/or common law trademarks of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates
and/or subsidiaries in the United States and/or other countries. onsemi owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of onsemi’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. onsemi is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
The evaluation board/kit (research and development board/kit) (hereinafter the “board”) is not a finished product and is not available for sale to consumers. The board is only intended for research, development, demonstration and evaluation purposes and will only be used in laboratory/development areas by persons with an engineering/technical training and familiar with the risks associated with handling electrical/mechanical components, systems and subsystems. This person assumes full responsibility/liability for proper and safe handling. Any other use, resale or redistribution for any other purpose is strictly prohibited.
THE BOARD IS PROVIDED BY ONSEMI TO YOU “AS IS” AND WITHOUT ANY REPRESENTATIONS OR WARRANTIES WHATSOEVER. WITHOUT LIMITING THE FOREGOING, ONSEMI (AND ITS LICENSORS/SUPPLIERS) HEREBY DISCLAIMS ANY AND ALL REPRESENTATIONS AND WARRANTIES IN RELATION TO THE BOARD, ANY MODIFICATIONS, OR THIS AGREEMENT, WHETHER EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING WITHOUT LIMITATION ANY AND ALL REPRESENTATIONS AND WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON-INFRINGEMENT, AND THOSE ARISING FROM A COURSE OF DEALING, TRADE USAGE, TRADE CUSTOM OR TRADE PRACTICE.
onsemi reserves the right to make changes without further notice to any board.
You are responsible for determining whether the board will be suitable for your intended use or application or will achieve your intended results. Prior to using or distributing any systems that have been evaluated, designed or tested using the board, you agree to test and validate your design to confirm the functionality for your application. Any technical, applications or design information or advice, quality characterization, reliability data or other services provided by onsemi shall not constitute any representation or warranty by onsemi, and no additional obligations or liabilities shall arise from onsemi having provided such information or services.
onsemi products including the boards are not designed, intended, or authorized for use in life support systems, or any FDA Class 3 medical devices or medical devices with a similar or equivalent classification in a foreign jurisdiction, or any devices intended for implantation in the human body. You agree to indemnify, defend and hold harmless onsemi, its directors, officers, employees, representatives, agents, subsidiaries, affiliates, distributors, and assigns, against any and all liabilities, losses, costs, damages, judgments, and expenses, arising out of any claim, demand, investigation, lawsuit, regulatory action or cause of action arising out of or associated with any unauthorized use, even if such claim alleges that onsemi was negligent regarding the design or manufacture of any products and/or the board.
This evaluation board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and may not meet the technical requirements of these or other related directives.
FCC WARNING This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation purposes only and is not considered by onsemi to be a finished end product fit for general consumer use. It may generate, use, or radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment may cause interference with radio communications, in which case the user shall be responsible, at its expense, to take whatever measures may be required to correct this interference.
onsemi does not convey any license under its patent rights nor the rights of others.
LIMITATIONS OF LIABILITY: onsemi shall not be liable for any special, consequential, incidental, indirect or punitive damages, including, but not limited to the costs of requalification, delay, loss of profits or goodwill, arising out of or in connection with the board, even if onsemi is advised of the possibility of such damages. In no event shall onsemi’s aggregate liability from any obligation arising out of or in connection with the board, under any theory of liability, exceed the purchase price paid for the board, if any.
The board is provided to you subject to the license and other terms per onsemi’s standard terms and conditions of sale. For more information and documentation, please visit www.onsemi.com.
ADDITIONAL INFORMATION
TECHNICAL PUBLICATIONS: Technical Library: www.onsemi.com/design/resources/technical-documentation onsemi Website: www.onsemi.com
ONLINE SUPPORT: www.onsemi.com/support For additional information, please contact your local Sales Representative at www.onsemi.com/support/sales
Downloaded from Arrow.com.
www.onsemi.com 1
Documents / Resources
 |
ON Semiconductor EVBUM2028DB Evaluation Boards [pdf] User Manual EVBUM2028DB, EVBUM2028DB Evaluation Boards, EVBUM2028DB, Evaluation Boards, Boards |