Texas Instruments TPS2480 EVM User manual

User's Guide
SLUU370A–January 2010–Revised June 2010
TPS2480 and TPS2481 Evaluation Module
This user’s guide describes the evaluation modules (EVM) for the TPS2480 and TPS2481. TPS2480 and
TPS2481 are positive-voltage, power-limiting, hot-swap controllers with a built-in I2C™ current monitor.
The TPS2480 operates in a latched fault manner whereas the TPS2481 operates in an automatic retry
manner.
Contents
1 Description ................................................................................................................... 2
1.1 Features ............................................................................................................. 2
1.2 Applications ......................................................................................................... 2
1.3 Electrical Specifications ........................................................................................... 2
2 General Configuration and Description .................................................................................. 3
2.1 Physical Access .................................................................................................... 3
3 Test Setup ................................................................................................................... 4
4 TPS2480/1EVM GUI Setup ................................................................................................ 5
4.1 TPS2480/1EVM GUI Installation ................................................................................. 5
4.2 TPS2480/1EVM GUI Operation .................................................................................. 5
5 TPS2480/1EVM Typical Performance Data ............................................................................. 8
5.1 TPS2481EVM-001 and TPS2480EVM-002 Power Limit Curves ............................................ 8
5.2 High-Voltage Application Power Limit Curves .................................................................. 8
6 EVM Assembly Drawing and Layout Guidelines ........................................................................ 9
6.1 PCB Drawings ...................................................................................................... 9
6.2 Layout Guidelines ................................................................................................ 12
7 Bill of Materials and Schematics ........................................................................................ 13
7.1 Bill of Materials .................................................................................................... 13
7.2 Schematics ........................................................................................................ 16
List of Figures
1 Typical TPS2480/1EVM Test Setup...................................................................................... 4
2 TPS2481EVM-001 and TPS2480EVM-002 GUI Overview Form..................................................... 5
3 TPS2481EVM-001 and TPS2480EVM-002 GUI Calibrate Form..................................................... 6
4 High-Voltage Application GUI Overview Form .......................................................................... 6
5 High-Voltage Application GUI Calibrate Form........................................................................... 7
6 TPS2481EVM-001 and TPS2480EVM-002 Current and Power Limit Curve ....................................... 8
7 High-Voltage Application Current and Power Limit Curve............................................................. 8
8 Top Side Layout/Routing................................................................................................... 9
9 Layer Two Routing ........................................................................................................ 10
10 Layer Three Routing ...................................................................................................... 11
11 Bottom Side Placement/Routing......................................................................................... 12
12 TPS2480/1 EVM Schematic ............................................................................................. 16
13 TPS2480/1 EVM Schematic – USB-I2C................................................................................ 17
List of Tables
1 TPS2480/1EVM Electrical and Performance Specifications at 25°C ................................................ 2
I2C is a trademark of Philips Corporation.
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Description www.ti.com
2 Connector Functionality.................................................................................................... 3
3 Test Points................................................................................................................... 3
4 Bill of Materials............................................................................................................. 13
1 Description
The EVM design allows for several common application designs: a 12-V system with latched or automatic
retry and a 48-V system with latched or automatic retry. The 12-V versions feature Texas Instruments new
line of high-performance power MOSFETs. The EVM also provides a USB interface for the I2C™ current
monitor when using the TPS2480/1 GUI on a PC.
1.1 Features
• General TPS2480/1 Device Features
– Programmable current limiting and power limiting for complete SOA protection
– Programmable fault timer to eliminate nuisance shutdowns
– Programmable undervoltage lockout
– Power good
– Latched operation mode (TPS2480)
– Automatic retry mode (TPS2481)
• EVM Configurable Options
– TPS2481EVM-001 (12 V, 480 W, auto retry)
– TPS2480EVM-002 (12 V, 480 W, latched)
– High-voltage applications (48 V, 400 W, auto retry or latched)
NOTE: The high-voltage version is not orderable. For details, see the schematic and bill of
materials.
1.2 Applications
• Any live backplane insertion application
– Servers
– Telecommunications
1.3 Electrical Specifications
Table 1. TPS2480/1EVM Electrical and Performance Specifications at 25°C
Characteristic TPS2481EVM-001 High-Voltage Application
TPS2480EVM-002
Maximum input voltage 15 V 57 V
Input voltage (operating) 10 V 14 V 42 V to 54 V
Turnon voltage (maximum) 9 V 35.8 V
Turnoff voltage (minimum) 7.9 V 31.6 V
Nominal current 40 A 8.3 A
Trip point current 45 A to 55 A 9 A to 11 A
Operating temperature –40ºC to 85°C –40°C to 85°C
TPS2480 fault timer trip time (nominal) 528 µs 240 µs
TPS2481 fault timer period (nominal) 4.4 ms 2.0 ms
Program power limit (Vprog/2*R1) 200 W 400 W
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www.ti.com General Configuration and Description
2 General Configuration and Description
2.1 Physical Access
Table 2 lists the TPS2480/1EVM connector functionality, and Table 3 describes the test point availability.
Table 2. Connector Functionality
Connector Label Description
J1/J6 +IN/–IN Power bus input (high-current, screw-down lugs). J1 is +IN and J6 is –IN. Apply bus input voltage
between either J1/J6 or between J3/J8.
J3/J8 +IN/–IN Power bus input (banana jack). J3 is +IN and J8 is –IN. Apply bus input voltage between either J1/J6
or between J3/J8.
J2/J5 +OUT/–OUT Switched bus output (high-current, screw-down lugs). J2 is +OUT and J5 is –OUT. Apply the load
between either J2/J5 or between J4/J7.
J4/J7 +OUT/–OUT Switched bus output (banana jack). J4 is +OUT and J7 is –OUT. Apply the load between either J2/J5
or between J4/J7.
J13 USB USB port. Connect furnished USB cable to PC when using the TPS2480/1 GUI
J9 A1 Allows selection of the A1 I2C address bit. The EVM default is set to address 1000000 by R13/R14.
For other address options, remove R13/R14 and see the table on the schematic.
J10 A0 Allows selection of the A0 I2C address bit. The EVM default is set to address 1000000 by R13/R14.
For other address options remove R13/R14 and see the table on the schematic.
S1 EN Selecting the S1 EN position (toward TP15) allows the TPS2480/1 to enable the MOSFET if the
power bus input is above the turn on voltage. Setting S1 away from the EN position disables the
MOSFET.
J11, J12 For manufacturing use only. Shunts must remain installed in J11 and J12.
Table 3. Test Points
Test Point Color Label Description
TP2 RED +IN Power bus input high.
TP5 BLK –IN Power bus input low.
TP3 ORG +OUT Switched bus output high.
TP4 BLK –OUT Switched bus output low.
TP1 WHT SNS SNS pin test point.
TP6 WHT GATE GATE pin test point.
TP10 WHT PG PG pin (power good) test point.
TP16 WHT TMR TMR pin (timer) test point.
TP18 WHT PRG PROG pin (power program) test point.
TP15 WHT EN EN pin (enable) test point.
TP14 WHT SCL SCL pin (serial clock) test point.
TP13 WHT SDA SDA pin (serial data) test point.
TP12 WHT A1 A1 pin (upper address bit) test point. Level set by R14 and J9.
TP11 WHT A0 A0 pin (lower address bit) test point. Level set by R13 and J10.
TP17 RED 3P3V_USB VS pin (current monitor supply voltage) test point. The USB source applied at J13 powers
the current monitor.
TP19 BLK GND GNDB pin (current monitor ground) test point. The USB source applied at J13 powers the
current monitor.
TP7 WHT HSNS High-voltage (HV) sense test point. TPS2480/1EVM-001 provides a circuit to shift the current
monitor input. This test point mirrors the voltage at TP1.
TP9 WHT LSNS Low-voltage (LV) sense test point. This test point represents the HV to LV mirrored current
sense voltage.
TP8 RED V– Sense voltage mirror negative supply voltage. Normally ~5 V below the power bus high-input
voltage.
D6 GRN USB USB active indicator LED. When a USB power source is presently connected to a PC, this
LED illuminates.
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Positive
Voltmeter
+ -
Oscilloscope
Power
Supply
Negative
TPS2480/1EVM
J1
J3
J6
J8
J2
J4
J5
J7
D6
J13
S1
PC with GUI
Positive
Load
Negative
USBCable
Test Setup www.ti.com
3 Test Setup
Figure 1 shows a typical test setup for TPS2480/1EVM. Input voltage can be applied as described in
Table 2.
Figure 1. Typical TPS2480/1EVM Test Setup
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www.ti.com TPS2480/1EVM GUI Setup
4 TPS2480/1EVM GUI Setup
4.1 TPS2480/1EVM GUI Installation
If not already performed on the PC/laptop to be used for test, open the TPS2480/1 GUI (SLUC167) file,
and extract it to a known folder.
4.2 TPS2480/1EVM GUI Operation
• Navigate to the TPS2480_1EVM.exe file, and double-click it. A GUI as shown in Figure 2 or Figure 4
appears. For a detailed example of the equations running behind the GUI, see the TPS2480/81 data
sheet (SLUS939).
• Click the Calibrate tab of the GUI. A GUI form as shown in Figure 3 or Figure 5 appears.
• Type the appropriate Rshunt value into the text box (0.001 for TPS2480EVM-002/TPS2481EVM-001 or
0.005 for the High Voltage Application). Press the Enter Shunt Resistance GUI button.
• Type a value of 60 into Max Expected Current ± text box. Press the Enter Max Expected Current GUI
button.
• Type a value of 0.002 into Enter LSB text box. Press the Enter Current LSB GUI button.
• At this time, the Read Initial Cal Current pushbutton activates (right side of Calibrate form under
Second Calibration). Press the Read Initial Cal Current GUI button.
• Type the appropriate Measured Shunt Current value into the text box. Press the Compute New Full
Scale and Read Post Second Cal Current GUI button.
• Press the Write all Edited and then the Read all Reg buttons in sequence.
Figure 2. TPS2481EVM-001 and TPS2480EVM-002 GUI Overview Form
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TPS2480/1EVM GUI Setup www.ti.com
Figure 3. TPS2481EVM-001 and TPS2480EVM-002 GUI Calibrate Form
Figure 4. High-Voltage Application GUI Overview Form
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www.ti.com TPS2480/1EVM GUI Setup
Figure 5. High-Voltage Application GUI Calibrate Form
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040 32 24 16 8 0
0
2
4
6
8
10
12
V - Output Voltage - V
O
V - Output Current - A
O
V = 48 V
CC
010 8 6 4 2 0
0
10
20
30
40
50
60
V - Output Voltage - V
O
I - Output Current - A
O
V = 12 V
CC
TPS2480/1EVM Typical Performance Data www.ti.com
5 TPS2480/1EVM Typical Performance Data
5.1 TPS2481EVM-001 and TPS2480EVM-002 Power Limit Curves
Figure 6 illustrates the current limit versus output voltage curve for TPS2481EVM-001 and TPS2480EVM-
002.
Figure 6. TPS2481EVM-001 and TPS2480EVM-002 Current and Power Limit Curve
5.2 High-Voltage Application Power Limit Curves
Figure 7 illustrates the current limit versus output voltage curve for the high-voltage application.
Figure 7. High-Voltage Application Current and Power Limit Curve
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www.ti.com EVM Assembly Drawing and Layout Guidelines
6 EVM Assembly Drawing and Layout Guidelines
6.1 PCB Drawings
Figure 8 through Figure 11 show component placement and layout of the EVM.
Figure 8. Top Side Layout/Routing
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EVM Assembly Drawing and Layout Guidelines www.ti.com
Figure 9. Layer Two Routing
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www.ti.com EVM Assembly Drawing and Layout Guidelines
Figure 10. Layer Three Routing
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EVM Assembly Drawing and Layout Guidelines www.ti.com
Figure 11. Bottom Side Placement/Routing
6.2 Layout Guidelines
The TPS2480/1 circuit layout must follow power and EMI/ESD best-practice guidelines. A basic set of
recommendations include:
• Arrange the high-power devices so that current flows in a sequential, linear fashion.
• Place a good ground plane under the power planes and TPS2480/1.
• The TPS2480/81 must be placed close to the sense resistor and MOSFET using a Kelvin type
connection to achieve accurate current sensing.
• A low-impedance GND connection is required because the TPS2480/81 can momentarily sink upwards
of 100 mA from the gate of the MOSFET. The GATE amplifier has high bandwidth while active, so
keep the GATE trace length short.
• Spacing consistent with safety standards like IEC60950 must be observed between the 48-V input
voltage rails and between the input and an isolated converter output.
• Large copper fills and traces must be used on SMT power-dissipating devices, and wide traces or
overlay copper fills must be used in the power path.
• The PROG, TIMER, and EN pins have high input impedances; therefore, their input lead length must
be minimized.
• Oversize power traces and power device connections assuring low voltage drop and good thermal
performance.
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www.ti.com Bill of Materials and Schematics
7 Bill of Materials and Schematics
7.1 Bill of Materials
Table 4. Bill of Materials
High Voltage Count Count RefDes Value Description Size Part Number Supplier
TPS2480 TPS2481 TPS2480EVM TPS2481EVM
-002 -001
1 1 1 1 C1 1µF Capacitor, Ceramic, 100V, X7R, 1210 Std Std
10%
1 1 0 0 C11 1.5nF Capacitor, Ceramic, 100V, X7R, 0805 Std Std
10%
0 0 1 1 C11 3.3nF Capacitor, Ceramic, 100V, X7R, 0805 Std Std
10%
6 6 6 6 C12, 0.1µF Capacitor, Ceramic, X7R, 16V, 0603 Std Std
C16–C18, 10%
C21, C23
2 2 2 2 C13, C14 22pF Capacitor, Ceramic, 50V, C0G, 0603 Std. Std.
10%
1 1 1 1 C15 1000pF Capacitor, Ceramic, 100V, C0G, 0805 Std. Std.
5%
1 1 1 1 C19 1µF Capacitor, Tantalum, 16V, 20% 3216 293D105X0016A2 Vishay
T
1 1 0 0 C2 47µF Capacitor, Aluminum, SM, 100V, 0.670 × 0.750 EEVFK2A470Q Panasonic
20%
0 0 1 1 C2 1000µF Capacitor, Aluminum, SM, 25V, 0.670 × 0.750 EEVFK1E102Q Panasonic
20%
2 2 2 2 C20, C22 10µF Capacitor, Tantalum, 10V, 20% 3216 293D106X0010A2 Vishay
T
1 1 1 1 C3 0.1µF Capacitor, Ceramic, 100V, X7R, 1206 Std Std
10%
1 1 0 0 C4 47µF Capacitor, Panasonic, 100V, 0.315 ECA-2AM470 Panasonic
20%
0 0 1 1 C4 330µF Capacitor, Panasonic, 25-V, 20% 0.315 ECA-1EM331 Panasonic
1 1 0 0 C5 0.1µF Capacitor, Ceramic, 100V, X7R, 0805 Std Std
10%
3 3 3 3 C8, C9, 0.1µF Capacitor, Ceramic, 100V, X7R, 0805 Std Std
C10 10%
0 0 0 0 C6, C7 0.1µF Capacitor, Ceramic, 100V, X7R, 0805 Std Std
10%
2 2 0 0 D1, D3 SMAJ58A Diode, TVS, 58V, 1W SMA SMAJ58A Diodes Inc.
0 0 2 2 D1, D3 SMAJ16A Diode, TVS, 16V, 1W SMA SMAJ16A Diodes Inc.
1 1 1 1 D2 MBRS3100T3 Diode, Schottky 3-A 100-V SMC MBRS3100T3 On Semi
0 0 0 0 D4 BZT52C8V2 Diode, Zener, Planar Power, SOD-123 BZT52C8V2-7 Diodes Inc.
500mW, 8.2V
1 1 0 0 D5 BZT52C5V1 Diode, Zener, 200mW, 5.1V SOD-323 BZT52C5V1S Diodes Inc.
1 1 1 1 D7 MBRA130 Diode, Schottky, 1A, 30V SMA MBRA130 IR
1 1 1 1 D8 7.5V Diode, Zener, 7.5V, 3W SMB 1SMB5922BT3 On Semi
4 4 4 4 J1, J2, J5, CX35-36-CY Lug, Copper, 35A, 0.380 × 1.020 CX35-36-CY Panduit
J6 inch
2 2 2 2 J11, J12 PEC02SAAN Header, Male 2pin, 100mil 0.100 inch × 2 PEC02SAAN Sullins
spacing,
1 1 1 1 J13 UX60-MB-5ST Connector, Recpt, USB-B, Mini, 0.354in. × UX60-MB-5S8 Hirose
5pins, SMT 0.303in.
4 4 4 4 J3, J4, J7, 3267 Connector, Banana Jack, 0.500 dia. inch 3267 Pomona
J8 Uninsulated
2 2 2 2 J9, J10 PEC04DAAN Header, Male 2×4-pin, 100mil 0.20 × 0.40 inch PEC04DAAN Sullins
spacing
1 1 0 0 Q1 IRFS3107-7PPBF Transistor, MOSFET, 75V, 190A, TO-263-7 IRFS3107-7PPBF International
2.1 mΩRectifier
1 1 0 0 Q2 Si2325DS MOSFET, P-ch, -150 V, 690-mA, SOT-23 Si2325DS Vishay
1.2 Ω
5 5 5 5 Q3–Q7 BSS84 Transistor, PFET, -50 V, 130 mA, SOT-23 BSS84 Fairchild
Rds(ON) < 10 Ωat V(gs) = 5 V
1 1 1 1 Q8 MMBT2222A Transistor, NPN, 40 V, 500 mA SOT-23 MMBT2222A Fairchild
0 0 2 2 Q9, Q10 CSD16401Q5A-R MOSFET, NChan, 25V, 37A, QFN5×6mm CSD16401Q5A-R TI
1.3milliOhm
1 1 0 0 R1 0.005 Res, Power Metal Strip, 5W, ±1% 4527 WSR55L000FEA Vishay Dale
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Bill of Materials and Schematics www.ti.com
Table 4. Bill of Materials (continued)
High Voltage Count Count RefDes Value Description Size Part Number Supplier
TPS2480 TPS2481 TPS2480EVM TPS2481EVM
-002 -001
0 0 1 1 R1 0.001 Res, Power Metal Strip, 5W, ±1% 4527 WSR51L000FEA Vishay Dale
1 1 0 0 R12 24.0K Resistor, Chip, 1/2W, 5% 1210 STD STD
1 1 0 0 R15 249K Resistor, Chip, 1/10W, 1% 0805 Std Std
0 0 1 1 R15 54.9K Resistor, Chip, 1/10W, 1% 0805 Std Std
1 1 0 0 R18 47.5k Resistor, Chip, 1/10W, 1% 0805 Std Std
0 0 1 1 R18 178k Resistor, Chip, 1/10W, 1% 0805 Std Std
0 0 1 1 R19 20K Resistor, Chip, 1/10W, 1% 0805 Std Std
1 1 1 1 R2 10 Resistor, Chip, 1/10W, 1% 0805 Std Std
1 1 1 1 R20 1.00M Resistor, Chip, 1/16 W, 1% 0603 Std. Std.
3 3 3 3 R21, R22, 1.5K Resistor, Chip, 1/16 W, 5% 0603 Std Std
R39
9 9 9 9 R23, R24, 33 Resistor, Chip, 1/16W, 5% 0603 Std Std
R35–R38,
R40–R42
5 5 5 5 R25, R27, 100K Resistor, Chip, 1/16W, 1% 0603 Std Std
R28, R29,
R45
2 2 2 2 R26, R44 15K Resistor, Chip, 1/16 W, 5% 0603 Std. Std
0 0 2 2 R3, R4 0 Resistor, Chip, 1/10W, 5% 0805 Std Std
2 2 0 0 R10, R11 0 Resistor, Chip, 1/10W, 5% 0805 Std Std
0 0 0 0 R17 0 Resistor, Chip, 1/10W, 5% 0805 Std Std
1 1 1 1 R46 0 Resistor, Chip, 1/10W, 5% 0805 Std Std
3 3 3 3 R30, R31, 2.2K Resistor, Chip, 1/16 W, 5% 0603 Std. Std.
R33
2 2 2 2 R32, R34 1K Resistor, Chip, 1/16W, 1% 0603 Std Std
1 1 1 1 R43 200 Resistor, Chip, 1/16W, 5% 0603 Std Std
0 0 0 0 R47 100 Resistor, Chip, 1/10W, 1% 0805 Std Std
1 1 0 0 R5 10K Resistor, Chip, 1/10W, 1% 0805 Std Std
1 1 1 1 R16 10K Resistor, Chip, 1/10W, 1% 0805 Std Std
1 1 1 1 R6 100K Resistor, Chip, 1/10W, 1% 0805 Std Std
2 2 2 2 R13, R14 1K Resistor, Chip, 1/10W, 1% 0805 Std Std
0 0 0 0 R7 1K Resistor, Chip, 1/10W, 1% 0805 Std Std
1 1 0 0 R8 100 × 4 Resistor, Chip Array, 100mW ± 612 ACASA1000E100 Vishay
0.1% 0P100
1 1 0 0 R9 100 Resistor, Chip, 1/10W, 1% 0805 Std Std
1 1 1 1 S1 EG1218 Switch, SPDT, Slide, PC-mount, 0.457 × 0.157 EG1218 E_Switch
inch
10 10 10 10 TP1, TP6, 5012 Test Point, White, Thru Hole 0.125 × 0.125 5012 Keystone
TP10–TP1 inch
6, TP18
2 2 0 0 TP7, TP9 5012 Test Point, White, Thru Hole 0.125 × 0.125 5012 Keystone
inch
2 2 2 2 TP2, TP17 5010 Test Point, Red, Thru Hole 0.125 × 0.125 5010 Keystone
inch
1 1 0 0 TP8 5010 Test Point, Red, Thru Hole 0.125 × 0.125 5010 Keystone
inch
1 1 1 1 TP3 5013 Test Point, Orange, Thru Hole 0.125 × 0.125 5013 Keystone
inch
3 3 3 3 TP4, TP5, 5011 Test Point, Black, Thru Hole 0.125 × 0.125 5011 Keystone
TP19 inch
1 1 0 0 U1 OPA333AID IC, CMOS Op Amp, 1.8V micro- SO-8 OPA333AID TI
Power, Zero-Drift Series
1 0 1 0 U2 TPS2480PW IC, Positive Latching Hot Swap TSSOP-20 TPS2480PW TI
Controller and I2C Current
Monitor
0 1 0 1 U2 TPS2481PW IC, Positive Auto-retry Hot Swap TSSOP-20 TPS2481PW TI
Controller and I2C Current
Monitor
1 1 1 1 U3 24LC64-I/SN IC, Serial EEPROM, 64K, 2.5- SO-8 24LC64I-SN Microchip
5.5V, 400 kHz Max.
1 1 1 1 U4 TUSB3210PM IC, USB, General Purpose PQFP-64 TUSB3210PM** Texas
Device Controller Instruments
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www.ti.com Bill of Materials and Schematics
Table 4. Bill of Materials (continued)
High Voltage Count Count RefDes Value Description Size Part Number Supplier
TPS2480 TPS2481 TPS2480EVM TPS2481EVM
-002 -001
1 1 1 1 U5 TPS76333DBV IC, Micro-Power 100 mA LDO SOT23-5 TPS76333DBV TI
Regulator
1 1 1 1 Y1 12MHZ Crystal, 12-MHz, 20 pF, ±50 0.185 × 0.532 CY12BPSMD Crystek
PPM at 25°C
4 4 4 4 Screw, panhead, #10-32, 0.500 PMS 102 0050 Building
inch PH Fasteners
4 4 4 4 Washer, flat, #10 #10FWZ Building
Fasteners
4 4 4 4 Washer, split, M5 MLWZ 005 Building
Fasteners
4 4 4 4 Nut, hex, #10-32 HNZ102 Building
Fasteners
2 2 2 2 — Shunt, Black 100-mil 929950-00 3M
4 4 4 4 SJ5514-0 Bumpons, cylindrical, black SJ5514-0 3M
1 1 1 1 — PCB, 5 In × 3.5 In × 0.062 In HPA440 Any
1 1 1 1 N/A USB Cable, 5-pin, B-Mini Male to AK672M/2-2-R Assman
Type A Male, 2m
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4
2
2
1
4 2 3 1
2
2
2
2
1
1
2
2
2
1
1
2 2
22
+
3
1
1
1
+
Bill of Materials and Schematics www.ti.com
7.2 Schematics
Figure 12. TPS2480/1 EVM Schematic
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+
+
+
www.ti.com Bill of Materials and Schematics
Figure 13. TPS2480/1 EVM Schematic – USB-I2C
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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
not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling
(WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives.
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
the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER
AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF
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appropriate precautions with regard to electrostatic discharge.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY
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TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive.
TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or
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Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior to handling the product. This
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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
cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may
be required to correct this interference.
EVM Warnings and Restrictions
It is important to operate this EVM within the input voltage range of 0 V to 15 V and the output voltage range of 0 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 85° C. The EVM is designed to operate
properly with certain components above 85° 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 © 2012, Texas Instruments Incorporated

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