Microchip Technology Microsemi PD70201EVB-25F-D-5 User manual

PD70201EVB-25F-D-5
User Guide
25W Isolated Flyback Converter Evaluation Board
October 2019

Isolated Flyback Converter Evaluation Board
Microsemi Proprietary and Confidential. PD70201EVB-U-25F-5 User Guide Revision 1.0
Contents
1 Revision History ................................................................................................................................... 1
1.1 Revision 1.0...............................................................................................................................................1
2 Product Overview ................................................................................................................................ 2
2.1 Evaluation Board Features........................................................................................................................3
2.2 Evaluation Board Connectors....................................................................................................................3
2.2.1 RJ45 Connectors ............................................................................................................................................ 4
2.2.2 Output Connector ......................................................................................................................................... 4
2.3 PhysicalCharacteristics.............................................................................................................................5
2.4 ElectricalCharacteristics ...........................................................................................................................5
2.5 Typical Performance.................................................................................................................................6
2.5.1 Efficiency at full load (5A) ............................................................................................................................. 6
2.5.2 Efficiency vs load at 48V input ...................................................................................................................... 6
2.5.3 Load Regulation ............................................................................................................................................ 6
2.5.4 Step load response........................................................................................................................................ 7
3 Installation ........................................................................................................................................... 8
3.1 Initial Configuration ..................................................................................................................................8
4 Schematic ............................................................................................................................................ 9
5 Bill of Materials .................................................................................................................................. 10
6 Board Layout...................................................................................................................................... 13
7 Evaluation board ordering information ............................................................................................. 14

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1 Revision History
The revision history describes the changes that were implemented in the document. The changes are
listed by revision, starting with the most current publication.
1.1 Revision 1.0
Revision 1.0 was published in October 2019. It was the first publication of this document.

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Isolated Flyback Converter Evaluation Board
2 Product Overview
This document provides the description and operating procedures for Microsemi's reduced size 5V 25W
board PD70201EVB-25F-D-5. This board type is used for evaluating the performance of the PD70201
device, which contains both the standard 802.3at PD application interface, and a PWM controller.
Microsemi’s PD70201 device is part of a family of devices that support the IEEE 802.3af, 802.3at and
HDBT standards PD
interface.
The PD interface includes the following family of devices.
Table 1 •PD Family of Devices
Devicetype
Power Capability
Integrates PWM Controller
WA Priority
PD70100 IEEE 802.3at Type 1 (IEEE 802.3 af level) No No
PD70101 IEEE 802.3at Type 1 (IEEE 802.3 af level) Yes No
PD70200
IEEE 802.3at Type 2
No
No
PD70201
IEEE 802.3at Type 2
Yes
No
PD70210 IEEE 802.3at Type 2 No No
PD70210A IEEE 802.3at Type 2 No Yes
PD70211
IEEE 802.3at Type 2, HDBT
Yes
Yes
PD70224
IEEE 802.3at Type 2, HDBT
No
Yes
Microsemi’s PD70201EVB-25F-D-5 Evaluation Board provides designers with the environment needed
for evaluating the performance and implementation of PD applications based on the PD70201 device.
The board uses a single PD device (PD70201ILQ) to support the Detection, Classification, and Powering
phases on the 2/4 pairs of the Cat5 cable. PD70201ILQ supports a standard IEEE802.3at Type 2
interface as well as wide range non-standard input voltages.
This document provides all necessary procedures and instructions to install and operate this board.
Figure 1 •PD70201EVB-25F-D-5 Block Diagram
The board can be powered either by a PSE or a lab supply through RJ45 connector- see electrical
characteristics (page 7) for the input voltage range. The external load is connected
to evaluation board using output connector (J1) - refer to evaluation board picture (page 5) for the
location of input and output
connectors.
D9 is the AT flag indication LED, a PD70201 device output signal indicating that the device has detected
two fingers class, so the PSE side is AT level capable. This signal in the PD environment indicates that AT
power level is supported.

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The following image shows a top view of the evaluation board.
Figure 2 •PD70201EVB-25F-D-5 Evaluation Board – General View
2.1 Evaluation Board Features
Designed to support data and spare current by a single PD70201 device
Two RJ45 connectors (Data and Power Input, Data Output)
Output voltage connector
On board AT detected LED indicator
Pulse transformer for routing the data to PD application to enable full PD evaluation
Wide input voltage range
Evaluation Board working temperature: 0°C to 70°C
RoHS compliant
2.2 Evaluation Board Connectors
The evaluation board connectors are listed in the following table.
Table 2 •Connector Details
# Connector Name Description
1 J3 RJ45
Connector
2 J1 Output
connector
RJ45 port for Data and Power Input for PSE connection
Terminal blocks for connecting a load to output regulator

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2.2.1 RJ45 Connectors
The pinout of RJ45 input connector for power and data is described in the following table.
Table 3 •RJ45 Input Connector (J3)
CON1 Pin No Alternative
A (MDI-X)
Alternative
A (MDI)
Alternative
B (MDI-
X/MDI)
1 DATA - Vport_Neg DATA - Vport_Pos
2 DATA - Vport_Neg DATA - Vport_Pos
3 DATA - Vport_Pos DATA - Vport_Neg
4 SPARE - Vport_Pos
5 SPARE - Vport_Pos
6 DATA - Vport_Pos DATA - Vport_Neg
7 SPARE - Vport_Neg
8 SPARE - Vport_Neg
Manufacturer: Bel Stewart
Manufacturer part number: 08261X1TGH-F or equivalent
2.2.2 Output Connector
An external load is connected to the evaluation board using the output connector (J1). The pinout of the
output connector is described in the following table.
Table 4 •J1 Connector
Pin No.
Signal Name
Description
Pin 1 VOUT Positive DC/DC output voltage
Pin 2 VOUT_RTN Return of DC/DC output voltage
Manufacturer: Kaifeng Electronic
Manufacturer part number: KF350V-02P-14

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2.3 Physical Characteristics
The maximum mechanical dimensions of the board are 25.4mm x 21mm x 17mm (L x W x H).
2.4 Electrical Characteristics
Following are electrical characteristics of the evaluation board.
Table 5 •Electrical Characteristics
`Min Max Unit
Input – Con J3 36 57 V
Output voltage 4.8 5.25 V
Maximum Output Current
--
5
A
Port Isolation to Chassis -- 1.5 kVrms
Ambient temperature -40 +50 oC
Note: to operate evaluation board from +50 oC to +70 oC an external heatsink (not supplied) has to be attached
to the board via a thermally conductive conformal insulator (such as Bergquist GAP PAD p/n TGP 800VOS) by
using two mounting holes on the board.

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2.5 Typical Performance
2.5.1 Efficiency at full load (5A)
2.5.2 Efficiency vs load at 48V input
2.5.3 Load Regulation
Output voltage vs. load current
90.0%
90.5%
91.0%
91.5%
40 45 50 55 60
Input Voltage, V
Full Load Efficiency
vs. Input Voltage
84%
85%
86%
87%
88%
89%
90%
91%
92%
012345
Load curent (amps)
Efficiency at 48V vs. Load

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2.5.4 Step load response
Output voltage response to continuous load transients from 2A to 5A
4.500
4.600
4.700
4.800
4.900
5.000
5.100
5.200
5.300
5.400
5.500
012345
Load Regulation
Load (amps)

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3 Installation
Ensure that the board's power source is turned OFF before all peripheral devices are connected.
3.1 Initial Configuration
Note: Prior to starting any operation, it is important to verify that the evaluation board is setup as
shown in the following figure.
Connect load to the board (using J1).
Connect a Cat5 cable from PSE or a DC power supply to evaluation board using input connector J3.
Figure 3 •Test Setup

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Isolated Flyback Converter Evaluation Board
4 Schematic
Figure 4 •Schematic

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Isolated Flyback Converter Evaluation Board
5 Bill of Materials
Table 8 •Bill of materials
Item
QTY
Refe-
rence
VALUE
DESCRIPTION
Mfr Part Number
Mfr Name
NOTES
1
3
C11
10nF
CAP CRM 10nF 50v 10%X7R 0603 SMT
CL05B103KB5NNNC
Samsung
C12
10nF
CAP CRM 10nF 50v 10%X7R 0603 SMT
CL05B103KB5NNNC
Samsung
C64
10nF
CAP CRM 10nF 50v 10%X7R 0603 SMT
CL05B103KB5NNNC
Samsung
2
1
C13
36p
CAP CER 36PF 50V C0G 0603
C1608C0G1H360J
TDK
3
2
C15
1u
Capacitor, X7R, 1uF, 25V, 10% 0603
GRM188R71C105KA12D
Murata
C50
1u
Capacitor, X7R, 1uF, 25V, 10% 0603
GRM188R71C105KA12D
Murata
4
1
C18
1uF
Capacitor, X7R, 1uF, 25V, 10% 0603
C1005X7S1A105K050BC
TDK
5
1
C20
100n
CAP CER 0.1UF 16V X7R 0603
GRM188R71C104KA01D
Murata
6
2
C39
1n
CAP CRM 1nF/2000V 10%++X7R 1206 SMT
1206GC102KAT1A
AVX
N.C
C41
1n
CAP CRM 1nF/2000V 10%++X7R 1206 SMT
1206GC102KAT1A
AVX
N.C
7
1
C46
100nF
Capacitor, X7R, 1uF, 25V, 10% 0603
CL05B104KO5NNNC
Samsung
8
2
C51
4.7uF
Capacitor, X7R, 4.7uF, 25V, 10% 1210
GRM31CR71E475KA88L
Murata
C52
4.7uF
Capacitor, X7R, 4.7uF, 25V, 10% 1210
GRM31CR71E475KA88L
Murata
9
4
C54
47uF
CAP CER 47UF 6.3V X7R 1210
JMK325B7476MMHPR
Taiyo Yuden
C55
47uF
CAP CER 47UF 6.3V X7R 1210
JMK325B7476MMHPR
Taiyo Yuden
C58
47uF
CAP CER 47UF 6.3V X7R 1210
JMK325B7476MMHPR
Taiyo Yuden
C104
47uF
CAP CER 47UF 6.3V X7R 1210
JMK325B7476MMHPR
Taiyo Yuden
10
1
C65
1n
CAP CRM 1nF/2000V 10%++X7R 1206 SMT
1206B102K202CT
Walsin
11
1
C67
3.3nF
CAP 470NF 10V X7R 10% 0603
ECJ1VB1C332K
Panasonic
12
2
C77
100nF
CAP CRM 100nF 100V 10%^^X7R 1206 SMT
GRM188R72A104KA35D
Murata
C110
100nF
CAP CRM 100nF 100V 10%^^X7R 1206 SMT
GRM188R72A104KA35D
Murata
13
1
C92
82nF
CAP CRM 100nF 100V 10%X7R 1206 SMT
C0805C823K1RACTU
Kemet
14
1
C93
2.2uF
CAP CER 2.2uF 100V 10% X7R 1210 SMT
C3225X7R2A225K
TDK
15
1
C94
22uF
CAP ALUM 22UF 20% 100V SMD
UCZ2A220MCL6GS
Nichicon
16
1
C96
820pF
CAP CER 820PF 50V C0G 0603
C1608COG1H821J
TDK
17
2
C107
10nf
CAP CER 10000PF 100V X7R 0603
06031C103KAT2A
AVX
C108
10nf
CAP CER 10000PF 100V X7R 0603
06031C103KAT2A
AVX
18
1
C109
100n
CAP CER 100nF 16V 10% X7R 0603
VJ0603Y104KXJT
Vishay
19
1
C111
4.7uF
Capacitor, X7R, 1uF, 25V, 10% 0603
CL21B475KPFNFNE
Samsung
20
3
D4
MBR0530
DIODE SCHOTTKY 30V 500MA SOD123
MBR0530
MBR0530
Fairchild
D8
MBR0530
DIODE SCHOTTKY 30V 500MA SOD123
MBR0530
MBR0530
Fairchild
D67
MBR0530
DIODE SCHOTTKY 30V 500MA SOD123
MBR0530
MBR0530
Fairchild
21
1
D9
LED yellow
LED Super Yel Grn 100-130o 20-40mcd h=1
0603 SMD
19-21-SYGCS530E3TR8
Everlight
22
1
D55
MMSD701T1G
DIODE SCHOTTKY 70V 0.2A,225 W, SOD123
MMSD701T1G
ON Semiconductor
23
1
D59
MMSZ5255B-7-F
Diode Zener, 28V 500mW 5% SOD123
MMSZ5255B-7-F
Diodes Inc.
24
1
D60
BAT54C_NL
Diode Schottky Dual 30V CC SOT23 BAT54C
BAT54C_NL
Fairchild

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Isolated Flyback Converter Evaluation Board
25
1
D61
MMSZ5232B_NL
Diode, Zener, 500mW, 5.6V, 5% SOD 123
MMSZ5232
MMSZ5232B_NL
Fairchild
26
2
D62
SMAJ58CA
TVS DIODE 58VWM 93.6VC SMA
SMAJ58CA
Diodes Inc.
D63
SMAJ58CA
TVS DIODE 58VWM 93.6VC SMA
SMAJ58CA
Diodes Inc.
27
1
D64
SMAJ58A
DIODE TVS 58V 40A SRG400WPK SMA SMT
SMAJ58A
STMicroelectronics
28
1
D65
BAV21W-V
DIODE SWITCH 200V 100MW SOD123 -
BAV21W
BAV21W-V
Vishay
30
2
IN_P1
HK-2-G-S05
TEST POINT TIN PLATED HEAD 1.7mm H-3mm
L-3.2mm
HK-2-G-S05
MAC-8
IN_N1
HK-2-G-S05
TEST POINT TIN PLATED HEAD 1.7mm H-3mm
L-3.2mm
HK-2-G-S05
MAC-8
31
1
J1
PD-CON2
Terminal block 2 Pole interlocking 3.5mm pitch
KF350V-02P-14
Kaifeng Electronic
32
1
J3
08261X1TGH-F
CONN MAGJACK 1PORT 1000 BASE-T
08261X1TGH-F
Bel Stewart
33
1
L1
0.20uH
Fixed Inductors 0.20uH 20% 2.4mOhms 4X4m
XEL4030-201MEC
Coilcraft
34
1
L4
2.2uH
Power Inductors 2.2uHy 1.5A 110mOhmSMT
Shielded
LPS3015-222ML
Coilcraft
35
1
Q2
FMMT549
TRN PNP -30V -1A SOT23
FMMT549
Fairchild
36
1
Q4
PSMN2R4-30MLD
MOSFET N-CH 30V 4.2mOhm power33 SMT
PSMN2R4-30MLD
NXP
37
1
Q16
FDMC86260
MOSFET N-ch 150V, 34 mohm Power33 SMT
FDMC86260
Fairchild
38
1
R2
240K
RES 240K 125mW 5%0402 SMT MTL FLM
ERJ2GEJ244X
Panasonic
39
1
R3
24.9K
RES TCK FLM 24.9K 62.5mW 1%0603 SMT
RC1608F2492CS
Samsung
40
3
R9
0
RES TCK FLM 0R 62.5mW 5% 0603 SMT
MCR03EZPJ000
Rohm
R82
0
RES TCK FLM 0R 62.5mW 5% 0603 SMT
MCR03EZPJ000
Rohm
R133
0
RES TCK FLM 0R 62.5mW 5% 0603 SMT
MCR03EZPJ000
Rohm
41
2
R31
549K
Resistor, 549K, 1%, 1/16W 0402
MCR01MZPF5493
Rohm
R64
549K
Resistor, 549K, 1%, 1/16W 0402
MCR01MZPF5493
Rohm
42
1
R34
43.2K
RES 43.2K 100mW 0603SMT 1%
ERJ3EKF4322V
Panasonic
43
2
R44
0.18
RES TCK FLM 0.18R 0.1W 1% 0603 SMT
ERJ3RSFR18V
Panasonic
R51
0.18
RES TCK FLM 0.18R 0.1W 1% 0603 SMT
ERJ3RSFR18V
Panasonic
44
1
R53
1K
RES 1K 62.5mW 1%0603 SMT MTL FLM
ERJ3EKF1001V
Panasonic
45
1
R55
5.11k
RES SMT5.11K 1% 1/16w 0402
CR10-5111FK
ASJ
46
1
R63
30.9
Resistor 30.9Ohm 1% 1/16W 0402 SMD
RC0402FR-0730R9L
Yageo
47
1
R72
2.87K
RES FLM 2.87K 1% 62.5mW 0402 SMT
CRCW04022K87FKED
Vishay
48
2
R73
10K
RES 10K 62.5mW 1%0603 SMT MTL FLM
MCR03EZPFX1002
Rohm
R132
10K
RES 10K 62.5mW 1%0603 SMT MTL FLM
MCR03EZPFX1002
Rohm
49
1
R76
10.2K
RES 10.2K 62.5mW 1%0603 SMT MTL FLM
RC1608F1022CS
Samsung
50
1
R81
18.7K
Resistor, 18.7K, 1%, 1/16W 0402
ERJ-2RKF1872X
Panasonic
51
1
R84
4.75
RES 4.75R 0.1W 1%0603 SMT MTL FLM
CRCW06034R75FKEA
Vishay
52
1
R86
30.9
Resistor, 30.9R 1%, 1/10W 0603
ERJ3EKF30R9V
Panasonic
53
2
R126
0
RES TCK FLM 0R 125mW 5% 0805 SMT
RC2012J0000CS
Samsung
R128
0
RES TCK FLM 0R 125mW 5% 0805 SMT
RC2012J0000CS
Samsung
54
2
R130
15
Resistor, 15 Ohm 250mW 1% 1206
WR12X15R0FTL
Walsin
R138
15
Resistor, 15 Ohm 250mW 1% 1206
WR12X15R0FTL
Walsin
55
1
R131
1.21K
RES 1.21K 62.5mW 1%0603 SMT MTL FLM
RC0603FR-071K21L
Yageo
56
1
R135
5.11k
RES SMT5.11K 1% 1/16w 0402
CR10-5111FK
ASJ
N.C
57
2
R136
100K
Resistor, SMT 100K, 1%, 1/16W 0402
ERJ-2RKF1003X
Panasonic
58
R137
100K
Resistor, SMT 100K, 1%, 1/16W 0402
ERJ-2RKF1003X
Panasonic
59
1
T1
470uH
Inductor 0.47mH 0.85A 9.4x6mm SMT
CJ5100-AL
Coilcraft
N.C
60
1
T2
296u
Transformer, Gate driver SMT 269uH, DCR
0.795
DA2319-AL
Coilcraft
61
1
T5
38uH
TRANS FLYBACK POE+ 38UH SMD PRI RES0.082
TX4014
Tesla Magnetics

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Isolated Flyback Converter Evaluation Board
ohm
62
1
U13
PD70201
AT POE PD controller for IEEE 802.3 PD70201
PD70201ILQ-TR
Microsemi
63
1
U16
PD70224
Ideal Diode Bridge dual 6x8 SMT PD70224
PD70224ILQ-TR
Microsemi
Notes: Third party components can be replaced by approved equivalents.
N.C= not installed (optional)

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Isolated Flyback Converter Evaluation Board
6 Board Layout
This section provides the layout of the evaluation board. The board is a four-layer board with 2 Oz
copper. The following figures represent the silk of the board for tracking devices placements.
Figure 5 •Top Silk
Figure 6 •Bottom Silk

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Isolated Flyback Converter Evaluation Board
7 Evaluation board ordering information
Table 9 •Evaluation Board Ordering Information
Ordering Number Description
PD70201EVB-25F-D-5 IEEE802.3AT Type 2 PD based on PD70201 device with a 5V 5A output.

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Isolated Flyback Converter Evaluation Board
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One Enterprise, Aliso Viejo, CA 92656 USA
Within the USA: +1 (800) 713
-4113
Outside the USA: +1 (949) 380
-6100
Fax:
[phone]
Email:
[e-mail]
www.microsemi.com
©201
9 Microsemi
Corporation. All rights reserved.
Microsemi and the Microsemi logo are registered
trademarks of Microsemi Corporation. All other
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of their respective owners.
The technology
discussed in this document may be protected by
one or more patent grants.
Microsemi Corporation (Nasdaq: MSCC) offers a comprehensive portfolio of semiconductor and system
solutions for aerospace & defense, communications, data center and industrial markets. Products
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PD-000391821