User's Guide
SLVU245 – July 2008
TPS23753EVM-004: Evaluation Module for TPS23753
This user’s guide describes the TPS23753EVM (TPS23753EVM-004). The TPS23753EVM-004 contains
evaluation and reference circuitry for the TPS23753. The TPS23753 is an IEEE 802.3-2005 compliant
powered-device controller and power supply controller optimized for isolated converter topologies. The
TPS23753EVM-004 is targeted at general, efficient, synchronous rectifier, 10-W flyback converter
applications.
1
2
3
4
5
6
7
8
Contents
Description .................................................................................................................... 2
1.1
Features .............................................................................................................. 2
1.2
Applications .......................................................................................................... 2
Electrical Specifications ..................................................................................................... 3
Schematic ..................................................................................................................... 4
General Configuration and Description ................................................................................... 5
4.1
Physical Access ..................................................................................................... 5
Test Setup .................................................................................................................... 6
TPS23753EVM-004 Typical Performance Data ........................................................................ 6
6.1
3.3-V Efficiency ..................................................................................................... 6
6.2
5-V DC/DC Efficiency .............................................................................................. 7
6.3
12-V DC/DC Efficiency ............................................................................................. 7
EVM Assembly Drawings and Layout Guidelines ....................................................................... 8
7.1
PCB Drawings ....................................................................................................... 8
Bill of Materials ............................................................................................................. 10
List of Figures
1
2
3
4
5
6
7
8
TPS23753EVM-004 Schematic ............................................................................................
Typical TPS23753EVM-004 Test Setup ..................................................................................
TPS23753EVM-004 Efficiency With 3.3-V Output.......................................................................
TPS23753EVM-003 Efficiency With 5-V Output .........................................................................
TPS23753EVM-005 Efficiency With 12-V Output ......................................................................
Top Side Placement .........................................................................................................
Top-Side Routing ............................................................................................................
Bottom-Side Routing ........................................................................................................
4
6
6
7
7
8
9
9
List of Tables
1
2
3
4
TPS23753EVM-003, -004, and -005 Electrical and Performance Specifications at T = 25°C..................... 3
Connector Functionality ..................................................................................................... 5
Test Points .................................................................................................................... 5
TPS23753EVM-003, -004, and -005 Bill of Materials ................................................................. 10
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1
Description
1
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Description
TPS23753EVM-004 allows users to evaluate the reference circuitry of the TPS23753. It contains input and
output power connectors and an array of onboard test points for circuit evaluation. TPS23753EVM-003
(5-V output) and TPS23753EVM-005 (12-V output) can be configured with simple bill of materials (BOM)
changes.
1.1
Features
•
1.2
Applications
•
•
•
2
Efficient, general market design
– Simple gate drive, synchronous rectified secondary
– 10-W output power from power over Ethernet (PoE), 48-V or 24-V adapter and 6-W output power
from a 12-V adapter
– 5-V or 12-V output voltage with simple BOM changes
Voice over Internet protocol – IP telephones
Wireless LAN – Wireless access points
Security – Wired IP cameras
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Electrical Specifications
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2
Electrical Specifications
Table 1. TPS23753EVM-003, -004, and -005 Electrical and Performance Specifications at T = 25°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER INTERFACE
Input Voltage
Applied to the power pins of connectors J2, J4, or J6
Operating Voltage
After start up
Input UVLO
0
57
V
30
57
V
Rising input voltage
36
Falling input voltage
30
Detection voltage
At device terminals
3
Classification voltage
At device terminals
Classification current
Rclass = 1270 Ω
Inrush current-limit
Operating current-limit
V
10
mA
10
23
mA
1.8
2.4
mA
90
190
mA
405
495
mA
DC/DC CONVERTER
20 V ≤ Vin ≤ 57 V, ILOAD ≤ ILOAD (max)
10.8 V ≤ Vin ≤ 13.2 V, ILOAD ≤ ILOAD (max)
Output voltage
3.3-V output
(-004)
3.13
3.3
3.47
5-V output
(-003)
4.75
5.0
5.25
12-V output
(-005)
11.4
12.0
12.6
3.3-V output
20 V ≤ Vin ≤ 57 V
Output current
10.8 V ≤ Vin ≤ 13.2 V
Output ripple voltage,
peak-to-peak
Efficiency, end-to-end
Switching frequency
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V
3
5-V output
2
12-V output
0.9
3.3-V output
1.8
5-V output
1.2
12-V output
0.5
A
A
Vin = 44 V, ILOAD = 3 A
3.3-V output
Vin = 44 V, ILOAD = 2 A
5-V output
30
40
Vin = 44 V, ILOAD = 0.9 A
12-V output
100
Vin = 44 V, ILOAD = 2 A
3.3-V output
83
%
Vin = 44 V, ILOAD = 1.4 A
5-V output
82
%
Vin = 44 V, ILOAD = 0.9 A
12-V output
83
112
mV
%
138
TPS23753EVM-004: Evaluation Module for TPS23753
kHz
3
Schematic
3
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Schematic
2
2
1
1
3
2
2
1
1
2
2
2
3
2
1
2
2
2
2
3
2
3
2
2,3
The TPS23753EVM-004 schematic follows.
Figure 1. TPS23753EVM-004 Schematic
4
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General Configuration and Description
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4
General Configuration and Description
4.1
Physical Access
Table 2 lists the TPS23753EVM-004 connector functionality and Table 3 describes the test point
availability.
Table 2. Connector Functionality
Connector
Label
J1
DATA PORT
Ethernet data port connector
J2
ETHERNET
POWER
Ethernet power input connector. Contains Ethernet transformer and cable terminations
J3
VOUT
J4
J6
ADP-VSS
AP-RTN
Description
Output voltage connector
VSS referenced external adapter input connector.
J4-1/J4-1 are used with a powered-device adapter input (VSS)
RTN referenced external adapter input connector.
J6-1/J6-2 are used with DC/DC converter adapter input (RTN) and
Table 3. Test Points
Test Point
Color
Label
Description
TP9, TP12, TP29,
TP31
BLK
GND
Secondary-side (output) grounds (GND)
TP14
RED
VC
TP15
ORG
DR-P
Drain terminal of the primary-side switching MOSFET
TP7
BLK
VSS
POE input, low side
TP25, TP30, TP33
BLK
RTN
DC/DC converter return
TP20.
ORG
LOOP
TP21
WHT
I-LOOP
TP11, TP17
RED
VOUT
DC/DC converter output voltage.
TP10
RED
VOUT1
DC/DC converter output voltage (before LC filter).
TP13
WHT
GTS
Gate drive for the secondary-side synchronous rectifier MOSFET
TP6
WHT
DR-S
Drain terminal of the secondary-side synchronous rectifier MOSFET
TP28
WHT
CTL
Control loop input to the pulse width modulator
TP24
WHT
RCS
DC/DC converter primary-side switching MOSFET current sense (resistor side)
TP23
WHT
CS
DC/DC converter primary-side switching MOSFET current sense input (chip side)
TP27
RED
VB
Bias voltage regulator
TP19
WHT
GATE
Gate drive for the primary-side switching MOSFET
TP8
RED
VPRI
Transformer primary high side.
TP26
WHT
VKAT
Error amplifier (secondary-side) output drive for opto-isolator
TP1
RED
PR78
Pair 7,8
TP4
RED
PR12
Pair 1,2
TP2
ORG
PR45
Pair 4,5
TP3
ORG
PR36
Pair 3,6
D9
RED
POWER
ON
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DC/DC converter bias supply
Can be used with TP17 for overall feedback loop measurements.
Can be used with TP17 for outer feedback loop measurements.
Output power indicator
TPS23753EVM-004: Evaluation Module for TPS23753
5
Test Setup
5
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Test Setup
Figure 2 shows a typical test setup for TPS23753EVM-004. Input voltage can be applied as described in
Table 2.
AUX
Power Source
J4
PSE
Or
Power Supply
(Ethernet Cable )
J6
VOUT J3
GND
R LOAD
J2
TPS23753EVM - 004
Data to PHY
(Ethernet Cable )
J1
Figure 2. Typical TPS23753EVM-004 Test Setup
6
TPS23753EVM-004 Typical Performance Data
6.1
3.3-V Efficiency
Figure 3 illustrates the efficiency at three different input voltage levels: 1) PoE 48V from J2, 2) 48V
RTN-based adapter, and 3) 24V RTN-based adapter.
90
48 V to 3.3 V
85
24 V to 3.3 V
Efficiency - %
80
PoE 48 V to 3.3 V
75
70
65
60
0
0.5
1
1.5
2
2.5
3
IO - Output Current - A
Figure 3. TPS23753EVM-004 Efficiency With 3.3-V Output
6
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TPS23753EVM-004 Typical Performance Data
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6.2
5-V DC/DC Efficiency
Figure 4 illustrates the efficiency at three different input voltage levels: 1) PoE 48V from J2, 2) 48V
RTN-based adapter, and 3) 24V RTN- based adapter.
90
48 V to 5 V
85
24 V to 5 V
Efficiency - %
80
PoE 48 V to 5 V
75
70
65
60
0
0.50
1
1.50
IO - Output Current - A
2
Figure 4. TPS23753EVM-003 Efficiency With 5-V Output
6.3
12-V DC/DC Efficiency
Figure 5 illustrates the efficiency at three different input voltage levels: 1) PoE 48V from J2, 2) 48V
RTN-based adapter, and 3) 24V RTN-based adapter.
95
90
48 V to 12 V
Efficiency - %
85
24 V to 12 V
80
PoE 48 V to 12 V
75
70
65
60
0
0.10
0.20
0.30
0.40
0.50
0.60
0.70
IO - Output Current - A
0.80
0.90
1
Figure 5. TPS23753EVM-005 Efficiency With 12-V Output
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7
EVM Assembly Drawings and Layout Guidelines
7
EVM Assembly Drawings and Layout Guidelines
7.1
PCB Drawings
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Figure 6 shows the component placement and layout.
Figure 6. Top Side Placement
8
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EVM Assembly Drawings and Layout Guidelines
Figure 7. Top-Side Routing
Figure 8. Bottom-Side Routing
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9
Bill of Materials
8
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Bill of Materials
Table 4. TPS23753EVM-003, -004, and -005 Bill of Materials
TPS23753EVM-X
Refdes
Value
Description
Size
Part Number
MFR
Outputs (V)
12
3.3
5
Count
X=005
X=004
X=003
4
4
4
C1–C4
0.01µF
Capacitor, Ceramic, 100V, X7R, 10%
0603
Std
Std
1
1
1
C11
0.01µF
Capacitor, Ceramic, 100V, X7R, 10%
1210
Std
Std
0
2
2
C12, C13
47µF
Capacitor, Ceramic, 6.3-V, X5R, 20%
1210
C3225X5R0J476M
TD
2
0
0
C12, C13
10µF
Capacitor, Ceramic, 16-V, X5R, 20%
1210
C3225X5R1C106M
TD
0
1
1
C14
330µF
Capacitor, Aluminum, 6.3V, 20%
0.260 × 0.276 in
EEVFK0J331XP
Panasonic
1
0
0
C14
68µF
Capacitor, Aluminum, 16V, 20%
0.217 × 0.169
EEVFK1C680P
Panasonic
1
1
1
C15
0.22µF
Capacitor, Ceramic, 25V, X7R, 10%
0805
Std
Std
1
1
1
C16
10µF
Capacitor, Aluminum, 25V, ＝20%
0.200 × 0.210 in
EEVFK1E100R
Panasonic
0
0
0
C17
220pF
Capacitor, Ceramic, 16V, X7R, 10%
0603
Std
Std
0
1
1
C18
100pF
Capacitor, Ceramic, 16V, X7R, 10%
0603
Std
Std
1
0
0
C18
10pF
Capacitor, Ceramic, 16V, X7R, 10%
0603
Std
Std
0
0
1
C19
8.2nF
Capacitor, Ceramic, 16V, X7R, 10%
0603
Std
Std
0
1
0
C19
10nF
Capacitor, Ceramic, 16V, X7R, 10%
0603
Std
Std
1
0
0
C19
6.8nF
Capacitor, Ceramic, 16V, X7R, 10%
0603
Std
Std
2
2
2
C20, C22
0.1µF
Capacitor, Ceramic, 16V, X7R, 10%
0603
Std
Std
0
0
1
C21
22nF
Capacitor, Ceramic, 16V, X7R, 10%
0603
Std
Std
0
1
0
C21
47nF
Capacitor, Ceramic, 16V, X7R, 10%
0603
Std
Std
1
0
0
C21
10nF
Capacitor, Ceramic, 16V, X7R, 10%
0603
Std
Std
1
1
1
C23
0.1µF
Capacitor, Ceramic, 100V, X7R, 10%
1210
Std
Std
2
2
2
C24, C26
1nF
Capacitor, Ceramic, 100V, X7R, 10%
0805
Std
Std
0
0
0
C25
330pF
Capacitor, Ceramic, 200V, X7R, 10%
0805
Std
Std
1
1
1
C5
1000pF
Capacitor, Ceramic, 2kV, X7R 10%
1808
C4520X7R3D102K
TD
1
1
1
C6
2200pF
Capacitor, Ceramic, 2KV, X7R, 20%
1812
C4532X7R3D222K
TD
1
1
1
C7
2200pF
Capacitor, Ceramic, 100V, X7R, 10%
0805
Std
Std
1
1
1
C8
22µF
Capacitor, Aluminum, 100V, 20%
8 × 10.2 mm
EEVFK2A220P
Panasonic
2
2
2
C9, C10
1µF
Capacitor, Ceramic, 100V, X7R, 10%
1210
Std
Std
1
1
1
CL1
NA
Current Loop, 0.025 holes
0.120 × 0.075 in
NA
NA
1
1
1
D1
SMAJ58A
Diode, TVS, 58-V, 1W
SMA
SMAJ58A
Diodes Inc.
1
1
1
D10
BAS16
Diode, Switching, 200mA, 75V, 225mW
SOT-23
BAS16LT1
On Semi
1
1
1
D12
BAV99
Diode, Dual Ultra Fast, Series, 200-mA,
70-V
SOT23
BAV99
Fairchild
2
2
2
D2, D3
HD01-T
Bridge Rectifier, 100V, 0.8A, Glass Passivated,
SMD
MINI DIP4
HD01-T
Diodes, Inc
3
3
3
D8, D13,
D14
MURA120
Diode, Rectifier, 1A, 200V
SMA
MURA120
On Semi
0
0
0
D5
MURA120
Diode, Rectifier, 1A, 200V
SMA
MURA120
On Semi
2
2
2
D6, D7
BZT52C15S
Diode, Zener, 200mW, 15V
SOD-323
BZT52C15S
Diodes, Inc
2
2
2
FB1, FB2
15-Ω
Bead, Ferrite, SMT, 15-Ω, 1500mA
0805
MMZ2012R150A
TDK
2
2
2
J1, J2
5520252-4
Connector, Jack, Modular, 8 POS
0.705 × 0.820
5520252-4
AMP
3
3
3
J3, J4, J6
ED1514
Terminal Block, 2-pin, 6-A, 3,5mm
0.27 × 0.25
ED1514
OST
1
1
1
L1
10uH
Inductor, SMT, 1.1A, 160mΩ
4.45x6.6mm
DO1608C-103ML_
Coilcraft
1
1
1
L2
1.0uH
Inductor, SMT, 1.0-uH, 6.8-A, 9-mΩ
0.51x0.37
DO3316P-102HCB
Coilcraft
0
1
1
Q1
IRF8113
MOSFET, N-ch, 30-V, 17.2-A, 5.6-mΩ
SO8
IRF8113
IR
1
0
0
Q1
IRF7855
MOSFET, N-ch, 60-V, 12-A, 9.4-mΩ
SO8
IRF7855
IR
1
1
1
Q2
SI4848DY
MOSFET, N-ch, 150-V, 3.7-A, 85-mΩ
SO8
SI4848DY
Vishay
4
4
4
R1–R4
75
Resistor, Chip, 1/16W, 5%
0603
Std
Std
1
1
1
R10
118K
Resistor, Chip, 1/16W,1%
0603
Std
Std
1
1
1
R11
162K
Resistor, Chip, 1/16W,1%
0603
Std
Std
1
1
1
R12
1.27K
Resistor, Chip, 1/16W,1%
0603
Std
Std
1
1
1
R13
24.9
Resistor, Chip, 1/16W, 1%
0603
Std
Std
1
1
1
R16
10K
Resistor, Chip, 1/16W,1%
0603
Std
Std
10
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Bill of Materials
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Table 4. TPS23753EVM-003, -004, and -005 Bill of Materials (continued)
TPS23753EVM-X
Refdes
Value
Description
Size
Part Number
MFR
Outputs (V)
12
3.3
5
Count
X=005
X=004
X=003
1
1
1
R17
49.9
Resistor, Chip, 1/16W,1%
0603
Std
Std
1
1
1
R18
0.39
Resistor, Chip, 1/2W, 1%
2010
Std
Std
1
1
1
R19
41.2K
Resistor, Chip, 1/16W,1%
0603
Std
Std
2
2
2
R14, R20
0
Resistor, Chip, 1/16W, 1%
0603
Std
Std
0
0
1
R21
21K
Resistor, Chip, 1/16W, 1%
0603
Std
Std
0
1
0
R21
2K
Resistor, Chip, 1/16W, 1%
0603
Std
Std
1
0
0
R21
142K
Resistor, Chip, 1/16W, 1%
0603
Std
Std
0
0
1
R22
1K
Resistor, Chip, 1/16W,1%
0603
Std
Std
0
1
0
R22
422
Resistor, Chip, 1/16W,1%
0603
Std
Std
1
0
0
R22
4.02K
Resistor, Chip, 1/16W,1%
0603
Std
Std
1
1
1
R23
2K
Resistor, Chip, 1/16W,1%
0603
Std
Std
0
0
1
R24
13.3K
Resistor, Chip, 1/16W,1%
0603
Std
Std
0
1
0
R24
24.3K
Resistor, Chip, 1/16W,1%
0603
Std
Std
1
0
0
R24
10.7K
Resistor, Chip, 1/16W,1%
0603
Std
Std
1
1
1
R26
392K
Resistor, Chip, 1/16W, 1%
0603
Std
Std
1
1
1
R27
39.2K
Resistor, Chip, 1/16W, 1%
0603
Std
Std
0
0
1
R28
249
Resistor, Chip, 1/16W, 1%
0603
Std
Std
0
1
0
R28
348
Resistor, Chip, 1/16W, 1%
0603
Std
Std
1
0
0
R28
0
Resistor, Chip, 1/16W, 1%
0603
Std
Std
1
1
1
R15
4.7
Resistor, Chip, 1/16W, 5%
0603
Std
Std
0
0
0
R25
79
Resistor, Chip, 1/2W, 5%
2010
Std
Std
1
1
1
R5
10
Resistor, Chip, 1/2W, 5%
2010
Std
Std
1
1
1
R6
160K
Resistor, Chip, 1/10W, 5%
0805
Std
Std
1
1
1
R7
24.9K
Resistor, Chip, 1/16W,1%
0603
Std
Std
1
1
1
R9
49.9
Resistor, Chip, 1/8-W, 1%
0805
Std
Std
1
1
1
T1
H2019
XFMR, Center-tapped, Voice Over IP
0.500 × 0.370
H2019
Pulse
0
0
1
T2
HA3802-AL or
835-01041FC
Transformer, PoE 13W, Triple Secondary, 150uH,
5V, 2A
0.875 × 0.675
HA3802-AL or
835-01041FC
Coilcraft or
E&E Magnetic
Products
0
1
0
T2
HA3801-AL or
835-01040FC
Transformer, PoE 13W, Triple Secondary, 165uH,
3.3V, 3A
0.875 × 0.675
HA3801-AL or
835-01040FC
Coilcraft or
E&E Magnetic
Products
1
0
0
T2
HA3803-AL or
835-01042FC
Transformer, PoE 13W, Triple Secondary, 150uH,
12V, 1A
0.875 × 0.675
HA3803-AL or
835-01042FC
Coilcraft or
E&E Magnetic
Products
1
1
1
U1
TPS23753PW
IC, IEEE 802.3-2005 Integrated Primary Side
Controller
TSSOP14
TPS23753PW
TI
1
1
1
U2
TCMT1107
IC, Photocoupler, 3750VRMS, 80-160% CTR
MF4
TCMT1107
Vishay
0
1
1
U3
TLV431ACDBVR
IC, Shunt Regulator, 1.24-V ref, 6-V, 10-mA, 1%
SOT23-5
TLV431ACDBVR
TI
1
0
0
U3
TL431ACDBVR
IC, Shunt Regulator, 2.49-V ref, 36-V,
10-mA, 1%
SOT23-5
TL431ACDBVR
TI
1
1
1
—
—
PCB, 2.76 In x 4.50 In x 0.062 In
—
HPA305
Any
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11
EVALUATION BOARD/KIT IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES
ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have
electronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental
measures typically found in end products that incorporate such semiconductor components or circuit boards. This evaluation board/kit does
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Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30 days from
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FCC Warning
This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES
ONLY and is not considered by TI to be a finished end-product fit for general consumer use. It generates, uses, and can 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 in other environments may
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EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the input voltage range of 0 V to 57 V and the output voltage range of 3 V to 15 V.
Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions
concerning the input range, please contact a TI field representative prior to connecting the input power.
Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the EVM.
Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.
During normal operation, some circuit components may have case temperatures greater than 80°C. The EVM is designed to operate
properly with certain components above 80°C as long as the input and output ranges are maintained. These components include but are
not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified
using the EVM schematic located in the EVM User's Guide. When placing measurement probes near these devices during operation,
please be aware that these devices may be very warm to the touch.
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Copyright © 2008, Texas Instruments Incorporated
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Following are URLs where you can obtain information on other Texas Instruments products and application solutions:
Products
Amplifiers
Data Converters
DSP
Clocks and Timers
Interface
Logic
Power Mgmt
Microcontrollers
RFID
RF/IF and ZigBee® Solutions
amplifier.ti.com
dataconverter.ti.com
dsp.ti.com
www.ti.com/clocks
interface.ti.com
logic.ti.com
power.ti.com
microcontroller.ti.com
www.ti-rfid.com
www.ti.com/lprf
Applications
Audio
Automotive
Broadband
Digital Control
Medical
Military
Optical Networking
Security
Telephony
Video & Imaging
Wireless
www.ti.com/audio
www.ti.com/automotive
www.ti.com/broadband
www.ti.com/digitalcontrol
www.ti.com/medical
www.ti.com/military
www.ti.com/opticalnetwork
www.ti.com/security
www.ti.com/telephony
www.ti.com/video
www.ti.com/wireless
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