Texas Instruments TPS53128 User manual

User’s Guide
TPS53128 Buck Controller Evaluation Module User's
Guide
ABSTRACT
The TPS53128EVM-620 evaluation module presents an easy-to-use reference design for a common dual-output
power supply using the TPS53128 controller in cost-sensitive applications.
Table of Contents
1 Introduction.............................................................................................................................................................................3
1.1 Description......................................................................................................................................................................... 3
1.2 Application..........................................................................................................................................................................3
1.3 Features............................................................................................................................................................................. 3
2 Electrical Performance Specifications................................................................................................................................. 4
3 Schematics..............................................................................................................................................................................5
4 Connector and Test Point Descriptions................................................................................................................................6
4.1 Enable Switches (SW1 and SW2)......................................................................................................................................6
4.2 Switching Frequency Select Switch (SW3)........................................................................................................................ 6
4.3 Test Point Descriptions.......................................................................................................................................................6
5 Test Setup................................................................................................................................................................................8
5.1 Equipment.......................................................................................................................................................................... 8
5.2 Recommended Setup........................................................................................................................................................ 8
6 Test Procedure...................................................................................................................................................................... 10
6.1 Start-Up Procedure.......................................................................................................................................................... 10
6.2 Line/Load Regulation and Efficiency Measurement Procedure....................................................................................... 10
6.3 Output Ripple Voltage Measurement Procedure..............................................................................................................10
6.4 Shutdown Procedure........................................................................................................................................................10
7 Performance Data and Typical Characteristic Curves.......................................................................................................11
7.1 Efficiency.......................................................................................................................................................................... 11
7.2 Line and Load Regulation.................................................................................................................................................11
7.3 Output Voltage Ripple...................................................................................................................................................... 12
7.4 Switch Node Waveforms..................................................................................................................................................12
8 EVM Assembly Drawings and Layout.................................................................................................................................13
9 Bill of Materials..................................................................................................................................................................... 17
10 Revision History................................................................................................................................................................. 18
List of Figures
Figure 3-1. TPS53128EVM-620 Schematic.................................................................................................................................5
Figure 4-1. Tip and Barrel Measurement for Output Voltage Ripple............................................................................................7
Figure 5-1. TPS53128EVM-620 Recommended Test Setup....................................................................................................... 9
Figure 7-1. Efficiency vs Load....................................................................................................................................................11
Figure 7-2. Efficiency vs Load....................................................................................................................................................11
Figure 7-3. Output Voltage vs Load........................................................................................................................................... 11
Figure 7-4. Output Voltage vs Load........................................................................................................................................... 11
Figure 7-5. Output Voltage Ripple............................................................................................................................................. 12
Figure 7-6. Output Voltage Ripple............................................................................................................................................. 12
Figure 7-7. Switching Waveform................................................................................................................................................12
Figure 7-8. Switching Waveform................................................................................................................................................12
Figure 8-1. Top Assembly.......................................................................................................................................................... 13
Figure 8-2. Bottom Assembly.................................................................................................................................................... 14
Figure 8-3. Top Layer.................................................................................................................................................................14
Figure 8-4. Bottom Layer........................................................................................................................................................... 15
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Figure 8-5. Internal Layer 1....................................................................................................................................................... 15
Figure 8-6. Internal Layer 2....................................................................................................................................................... 16
List of Tables
Table 2-1. TPS53128EVM-620 Electrical and Performance Specifications.................................................................................4
Table 4-1. TPS53128EVM-620 Test Points Description.............................................................................................................. 6
Table 9-1. TPS53128EVM-620 Bill of Materials.........................................................................................................................17
Trademarks
D-CAP2™ is a trademark of Texas Instruments.
All trademarks are the property of their respective owners.
Trademarks www.ti.com
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1 Introduction
1.1 Description
The TPS53128EVM-620 evaluation board provides the user with a convenient way to evaluate the TPS53128
dual D-CAP2™ mode control step-down controller in a realistic cost-sensitive application. Providing both a low
core-type 1.05-V and I/O type 1.8-V output at up to 4 A from a loosely regulated 12-V (8-V to 22-V) source,
the TPS53128EVM-620 includes switches and test points to assist a user in evaluating the performance of the
TPS53128 controller in their application.
1.2 Application
• Digital television
• Set-top box
• DSL and cable modems
• Cost-sensitive digital consumer products
1.3 Features
• 8-V to 22-V input
• 1.05-V and 1.8-V output
• Up to 4 A per channel output
• 350-kHz psudeo-fixed frequency D-CAP2 mode control
• Independent enable switches for power-on/power-off testing
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2 Electrical Performance Specifications
Table 2-1. TPS53128EVM-620 Electrical and Performance Specifications
Parameter Notes and Conditions MIN TYP MAX UNIT
INPUT CHARACTERISTICS
VIN Input voltage 8 12 22 V
IIN Input current VIN = 12 V, IOUT1 = 4 A, IOUT2 = 4 A — 1.2 1.5 A
No load input current VIN = 12 V, IOUT = 0 A — 20 — mA
VIN_UVLO Input UVLO IOUT = 4 A 4.0 4.2 4.5 V
OUTPUT CHARACTERISTICS
VOUT1 Output voltage 1 VIN = 12 V, IOUT1 = 2 A — 1.05 — V
Line regulation VIN = 8 V to 22 V — — 1%
Load regulation IOUT1 = 0 A to 4 A — — 1%
VOUT1_rip Output voltage ripple VIN = 12 V, IOUT2 = 4 A — - 30 mVpp
IOUT1 Output current 1 VIN = 8 V to 22 V 0 4 A
VOUT2 Output voltage 2 VIN = 12 V, IOUT2 = 2 A — 1.80 — V
Line regulation VIN = 8 V to 22 V — — 1%
Load regulation IOUT2 = 0 A to 4 A — — 1%
VOUT2_rip Output voltage ripple VIN = 12 V, IOUT2 = 4 A — — 30 mVpp
IOUT2 Output current 2 VIN = 8 V to 22 V 0 4 A
SYSTEMS CHARACTERISTICS
FSW Switching frequency 200 350 400 kHz
ηpk1 Peak efficiency of output 1 VIN = 12 V — 87% —
η1 Full load efficiency of output 1 VIN = 12 V, IOUT1 = 4 A — 85% —
ηpk2 Peak efficiency of output 2 VIN = 12 V — 91% —
η2 Full load efficiency of output 2 VIN = 12 V, IOUT2 = 4 A — 90% —
Electrical Performance Specifications www.ti.com
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3 Schematics
+
+
+
For reference only. See Table 9-1 for specific values.
Figure 3-1. TPS53128EVM-620 Schematic
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4 Connector and Test Point Descriptions
4.1 Enable Switches (SW1 and SW2)
The TPS53128EVM-620 includes independent enable switches for each of the two outputs. When the switch
is in the DIS position, the channel is disabled and discharged per the internal discharge characteristics of the
TPS53128.
To enable VOUT1, place SW1 in the EN position. To enable VOUT2, place SW2 in the EN position.
4.2 Switching Frequency Select Switch (SW3)
The TPS53128EVM-620 does not populate SW3. When using TPS53128EVM-620 to evaluate the TPS53126
controller in the TSSOP package, SW3 can be populated to allow selection of the TPS53126 switching
frequency between 350 kHz and 700 kHz.
4.3 Test Point Descriptions
Table 4-1 lists the test points, their labels, uses, and where additional information is located.
Table 4-1. TPS53128EVM-620 Test Points Description
Test Point Label Use Section
TP1 SS1 Monitor Channel 1 Soft-Start Voltage Section 4.3.4
TP2 SS2 Monitor Channel 2 Soft-Start Voltage Section 4.3.4
TP3 GND Ground for Input Voltage Section 4.3.1
TP4 GND Ground for Channel 1 Output Voltage Section 4.3.2
TP5 SW1 Monitor Switching Node for Channel 1 Section 4.3.5
TP6 GND Ground for Channel 2 Output Voltage Section 4.3.3
TP7 VOUT2 Monitor Output Voltage for Channel 2 Section 4.3.3
TP8 VOUT1 Monitor Output Voltage for Channel 1 Section 4.3.2
TP9 VIN Monitor Input Voltage Section 4.3.1
TP10 VREG5 Monitor Output of VREG5 Regulator Section 4.3.6
TP11 SW2 Monitor Switching Node for Channel 2 Section 4.3.5
4.3.1 Input Voltage Monitoring (TP3 and TP9)
The TPS53128EVM-620 provides two test points for measuring the voltage applied to the module. This allows
the user to measure the actual module voltage without losses from input cables and connectors. Measure all
input voltage between TP9 and TP3. To use TP9 and TP3, connect a voltmeter positive terminal to TP9 and
negative terminal to TP3.
4.3.2 Channel 1 Output Voltage Monitoring (TP4 and TP8)
The TPS53128EVM-620 provides two test points for measuring the voltage generated at the VOUT1 output by
the module. This allows the user to measure the actual output voltage without losses from output cables and
connectors. Measure all DC output voltage measurements between TP8 and TP4. To use TP8 and TP4, connect
a voltmeter positive terminal to TP8 and negative terminal to TP4.
For output ripple measurements, TP8 and TP4 allow a user to limit the ground loop area by using the tip and
barrel measurement technique shown in Figure 4-1.
Connector and Test Point Descriptions www.ti.com
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TP8 TP4
Metal Ground Barrel
Probe Tip
Figure 4-1. Tip and Barrel Measurement for Output Voltage Ripple
4.3.3 Channel 2 Output Voltage Monitoring (TP6 and TP7)
The TPS53128EVM-620 provides two test points for measuring the voltage generated at the VOUT2 output by
the module. This allows the user to measure the actual output voltage without losses from output cables and
connectors. Measure all DC output voltage between TP7 and TP6. To use TP7 and TP6, connect a voltmeter
positive terminal to TP7 and negative terminal to TP6.
For output ripple measurements, TP7 and TP6 allow a user to limit the ground loop area by using the tip and
barrel measurement technique shown in Figure 4-1.
4.3.4 Soft-Start Voltage Monitoring (TP1, TP2, and TP3)
The TPS53128EVM-620 provides two test points for measuring the soft-start ramp voltages. TP1 monitors the
soft-start ramp of Channel 1. TP2 monitors the soft-start ramp of Channel 2. To use TP1 or TP2, connect an
oscilloscope probe between TP1 or TP2 and TP3.
4.3.5 Switching Node Monitoring (TP3, TP5, and TP11)
The TPS53128EVM-620 provides two test points for measuring the switching node waveform voltages. TP5
monitors the switching node of Channel 1. TP2 monitors the switching node of Channel 2. To use TP5 or TP11,
connect an oscilloscope probe between TP5 or TP11 and TP3.
4.3.6 5-V Regulator Output Monitoring (TP3 and TP10)
The TPS53128EVM-620 provides a test point for measuring the output of the internal 5-V regulator. TP10
monitors the output voltage of the internal 5-V regulator. To use TP10, connect a voltmeter positive terminal to
TP10 and negative terminal to TP3.
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5 Test Setup
5.1 Equipment
5.1.1 Voltage Source
The input voltage source (VIN) is a 0-V to 25-V variable DC source capable of supplying 3.0 ADC minimum.
5.1.2 Meters
A1: 0 ADC to 5 ADC, ammeter
V1: VIN, 0-V to 25-V voltmeter
V2: VOUT1, 0-V to 2-V voltmeter
V3: VOUT2, 0-V to 2-V voltmeter
5.1.3 Loads
LOAD1 – One output load is an electronic load set for constant current mode capable of 0 ADC to 4 ADC at 1.05
VDC.
LOAD2 – The other output load is an electronic load set for constant current mode capable of 0 ADC to 4 ADC at
1.8 VDC.
5.1.4 Oscilloscope and Probe
The oscilloscope, analog or digital, must be set for AC-coupled measurement with 20-MHz bandwidth limiting.
Use 20-mV/division vertical resolution and 1.0-µse /division horizontal resolution for the output ripple voltage
test.
Oscilloscope probes with exposed conductive ground barrels are recommended.
5.1.5 Recommended Wire Gauge
VIN to J3 – The connection between the source voltage VIN and J1 of TPS53128EVM-620 can carry as much as
2 ADC. The minimum recommended wire size is AWG #16 with the total length of wire less than two feet (1-foot
input, 1-foot return).
J1 to LOAD1 and J2 to LOAD2 – The connection between J1 and LOAD1 and J2 and LOAD2 of
TPS53128EVM-620 can carry as much as 4 ADC each. The minimum recommended wire size is AWG #14
with the total length of wire less than two feet (1-foot input, 1-foot return).
5.1.6 Other Test Equipment
FAN – The TPS53128EVM-620 evaluation module includes components that can get hot to touch. Because this
EVM is not enclosed to allow probing of circuit nodes, a small fan capable of 200lfm–400 lfm is recommended to
reduce component temperatures when operating.
5.2 Recommended Setup
Figure 5-1 shows the recommended test setup to evaluate the TPS53128EVM-620. Working at an ESD
workstation, make sure that any wrist straps, bootstraps, or mats are connected referencing the user to earth
ground before power is applied to the EVM. Electrostatic smock and safety glasses also are recommended.
Test Setup www.ti.com
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LOAD1
1.05V @
4A
FAN
V2
+
-
LOAD2
1.8V @
4A V3
-
+
-
+
-
+
A1
-
+
V
VIN
V1
+-
Figure 5-1. TPS53128EVM-620 Recommended Test Setup
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6 Test Procedure
6.1 Start-Up Procedure
1. Prior to connecting the DC input source VIN, it is advisable to limit the source current from VIN to 3.0 ADC
maximum. Make sure VIN is initially set to 0 V.
2. Ensure LOAD1 and LOAD2 are set to constant current mode to sink 0 A before VIN is applied.
3. Verify SW1 and SW2 are in the desired position.
4. Place a fan as shown in Figure 5-1 and turn it on, making sure air is flowing across the EVM.
5. Increase VIN from 0 V to 12 VDC.
6.2 Line/Load Regulation and Efficiency Measurement Procedure
1. Set up the TPS53128EVM-620 per Section 5.2.
2. Start up the TPS53128EVM-620 per Section 6.1.
3. Adjust VIN to desired value between 8 VDC and 22 VDC.
4. Adjust LOAD1/LOAD2 to desired load between 0 A and 4 ADC.
5. Read input voltage, output voltage, and input current from V1, V2/V3, and A1, respectively.
6. Shut down TPS53128EVM-620 per Section 6.4.
6.3 Output Ripple Voltage Measurement Procedure
1. Set up the TPS53128EVM-620 per Section 5.2.
2. Start up the TPS53128EVM-620 per Section 6.1.
3. Adjust VIN to desired value between 8 VDC and 22 VDC.
4. Adjust LOAD1/LOAD2 to desired load between 0 A and 4 ADC.
5. Connect the oscilloscope probe to TP8 and TP4 for VOUT1, or TP7 and TP6 for VOUT2 as shown in Figure
4-1.
6. Measure output ripple.
7. Shut down the TPS53128EVM-620 per Section 6.4.
6.4 Shutdown Procedure
1. Set SW1 to DIS.
2. Set SW2 to DIS.
3. Decrease LOAD1 to 0 A and shut down LOAD1.
4. Decrease LOAD2 to 0 A and shut down LOAD2.
5. Decrease VIN to 0 V and shut down VIN.
6. Shut down the fan.
Test Procedure www.ti.com
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7 Performance Data and Typical Characteristic Curves
Figure 7-1 through Figure 7-8 present typical performance curves for the TPS53128EVM-620. Because actual
performance data can be affected by measurement techniques and environmental variables, these curves are
presented for reference and may differ from actual field measurements.
7.1 Efficiency
0 1 2 3 4 5
I - Load Current - A
LOAD
V = 12 V
IV = 22 V
I
V = 8 V
I
50
55
60
65
70
75
80
85
90
95
h- Efficiency - %
V = 8 V-22 V,
V = 1.05 V,
I = 0 A-4 A
I
OUT1
OUT1
Figure 7-1. Efficiency vs Load
0 1 2 3 4 5
I - Load Current - A
LOAD
50
55
60
65
70
75
80
85
90
95
h- Efficiency - %
V = 8 V
I
V = 12 V
IV = 22 V
I
V = 8 V-22 V,
V = 1.8 V,
I = 0 A-4 A
I
OUT2
OUT2
Figure 7-2. Efficiency vs Load
7.2 Line and Load Regulation
1.048
1.05
1.052
1.054
1.056
1.058
1.06
1.062
0 1 2 3 4 5
I - Load Current - A
LOAD
V = 8 V
I
V = 12 V
I
V = 22 V
I
V = 8 V-22 V,
V = 1.05 V,
I = 0 A-4 A
I
OUT1
OUT1
V - Output Voltage - V
O
Figure 7-3. Output Voltage vs Load
1.795
1.8
1.805
1.81
1.815
1.82
1.825
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
V = 8 V
I
V = 12 V
I
V = 22 V
I
V = 8 V-22 V,
V = 1.8 V,
I = 0 A-4 A
I
OUT2
OUT2
I - Load Current - A
LOAD
V - Output Voltage - V
O
Figure 7-4. Output Voltage vs Load
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7.3 Output Voltage Ripple
TPS53128EVM-620
Output Ripple
Test Condition: Vin 12 V, VO1 1.05 V, 4 A
Figure 7-5. Output Voltage Ripple
TPS53128EVM-620
Output Ripple
Test Condition: Vin 12 V, VO1 1.8 V, 4 A
Figure 7-6. Output Voltage Ripple
7.4 Switch Node Waveforms
TPS53128EVM-620
Switch Node
Test Condition: Vin 12 V, VO1 1.05 V, 4 A
Figure 7-7. Switching Waveform
TPS53128EVM-620
Switch Node
Test Condition: Vin 12 V, VO2 1.8 V, 4 A
Figure 7-8. Switching Waveform
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8 EVM Assembly Drawings and Layout
Figure 8-1 through Figure 8-6 show the design of the TPS53128EVM-620 printed circuit board. The EVM has
been designed using a 4-layer, 2-oz copper-clad circuit board of 3.5 inch by 2.7 inch to allow the user to easily
view, probe, and evaluate the TPS53128 control IC in a practical application. Moving components to both sides
of the PCB or using additional internal layers can offer additional size reduction for space constrained systems.
Figure 8-1. Top Assembly
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Figure 8-2. Bottom Assembly
Figure 8-3. Top Layer
EVM Assembly Drawings and Layout www.ti.com
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Figure 8-4. Bottom Layer
Figure 8-5. Internal Layer 1
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Figure 8-6. Internal Layer 2
EVM Assembly Drawings and Layout www.ti.com
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9 Bill of Materials
Table 9-1 contains the bill of materials for TPS53128EVM-620. The reference designators reference the
schematic in Figure 3-1 and assembly locations in Figure 8-1 and Figure 8-2. Components with a quantity
of 0 listed are not populated on the PCB but are provided for reference.
Table 9-1. TPS53128EVM-620 Bill of Materials
Qty RefDes Value Description Size Part Number MFR
0 C1 Capacitor, Aluminum, 25 V, 20% 0.328 × 0.390
inch
Std Std
0 C12, C19, C20,
C21
Capacitor, Ceramic 0603 Std Std
1 C15 4.7 μF Capacitor, Ceramic, 10 V, X5R, 20% 0805 Std Std
1 C16 1 μF Capacitor, Ceramic, 16 V, X5R, 20% 0805 Std Std
4 C2, C3, C4, C5 10 μF Capacitor, Ceramic, 25 V, X5R, 20% 1210 Std Std
2 C22, C23 4700 pF Capacitor, Ceramic, Low Inductance, 16 V, X7R,
20%
0603 Std Std
0 C24, C25 Capacitor, Ceramic, 25 V, X7R, 20% 0603 Std Std
2 C6, C11 0.1 μF Capacitor, Ceramic, 50 V, X5R, 10% 0603 Std Std
6 C7, C9, C10, C14,
C17, C18
47 μF Capacitor, Ceramic, 6.3 V, X5R, 20% 1206 Std Std
0 C8, C13 330 μF Capacitor, PXE, 4.0 V, 15 mΩ, 20% 7343 (D) APXE4R0ARA331MF
61G
NIPPON CHEMI-
CON
2 D1, D2 BAT54XV2T1
G
Diode, Schottky, 200 mA, 30 V SOD523 BAT54XV2T1G On Semi
3 J1, J2, J3 ED120/2DS Terminal Block, 2-pin, 15-A, 5.1 mm 0.40 × 0.35 inch ED120/2DS OST
2 L1, L2 3.3 μH Inductor, SMT Chip Coil, ±30% 8 × 8 mm LQH88PN3R3N38 Murata
4 Q1, Q2, Q3, Q4 CSD17507Q5
A
MOSFET, N-Chan, 30 V, 65 A, 11.8 mΩ QFN-8 POWER CSD17507Q5A TI
1 R1 1.27 k Resistor, Chip, 1/16W, 1% 0603 Std Std
4 R10, R4, R6, R8 10.0 k Resistor, Chip, 1/16W, 1% 0603 Std Std
2 R11, R12 5.11 Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R13 332 Resistor, Chip, 1/16W, 1% 0603 Std Std
0 R14, R15 Resistor, Chip, 1/8W, 5% 0603 Std Std
2 R17, R18 2.00 Resistor, Chip, 1/16W, 1% 0603 Std Std
0 R2, R7, R9 Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R3 3.32 k Resistor, Chip, 1/16W, 1% 0603 Std Std
1 R5 12.1 k Resistor, Chip, 1/16W, 1% 0603 Std Std
2 SW1, SW2 G12AP-RO Switch, ON-ON Mini Toggle 0.28 × 0.18 inch G12AP-RO Nikkai
0 SW3 G12AP-RO Switch, ON-ON Mini Toggle 0.28 × 0.18 inch G12AP-RO Nikkai
4 TP1, TP2, TP5,
TP11
5012 Test Point, White, Thru Hole 0.125 × 0.125
inch
5012 Keystone
1 TP10 5013 Test Point, Orange, Thru Hole 0.125 × 0.125
inch
5013 Keystone
3 TP3, TP4, TP6 5011 Test Point, Black, Thru Hole 0.125 × 0.125
inch
5011 Keystone
2 TP7, TP8 5014 Test Point, Yellow, Thru Hole 0.125 × 0.125
inch
5014 Keystone
1 TP9 5010 Test Point, Red, Thru Hole 0.125 × 0.125
inch
5010 Keystone
1 U1 TPS53128PW IC, Dual Synchronous Step-Down Controller For
Low-Voltage Power Rails
TSSOP TPS53128PW TI
1 — PCB, 2.70 inch × 3.50 inch × 0.063 inch FR-4 2.7 inch × 3.5
inch
HPA620 Any
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10 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision * (February 2011) to Revision A (January 2022) Page
• Updated the numbering format for tables, figures, and cross-references throughout the document. ................3
• Updated the user's guide title............................................................................................................................. 3
Revision History www.ti.com
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STANDARD TERMS FOR EVALUATION MODULES
1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or
documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance
with the terms set forth herein. User's acceptance of the EVM is expressly subject to the following terms.
1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility
evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not
finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For
clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions
set forth herein but rather shall be subject to the applicable terms that accompany such Software
1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned,
or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production
system.
2Limited Warranty and Related Remedies/Disclaimers:
2.1 These terms do not apply to Software. The warranty, if any, for Software is covered in the applicable Software License
Agreement.
2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM
to User. Notwithstanding the foregoing, TI shall not be liable for a nonconforming EVM if (a) the nonconformity was caused by
neglect, misuse or mistreatment by an entity other than TI, including improper installation or testing, or for any EVMs that have
been altered or modified in any way by an entity other than TI, (b) the nonconformity resulted from User's design, specifications
or instructions for such EVMs or improper system design, or (c) User has not paid on time. Testing and other quality control
techniques are used to the extent TI deems necessary. TI does not test all parameters of each EVM.
User's claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects in the EVMs within ten (10)
business days after delivery, or of any hidden defects with ten (10) business days after the defect has been detected.
2.3 TI's sole liability shall be at its option to repair or replace EVMs that fail to conform to the warranty set forth above, or credit
User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the warranty
period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to repair or
replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall be
warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day
warranty period.
WARNING
Evaluation Kits are intended solely for use by technically qualified,
professional electronics experts who are familiar with the dangers
and application risks associated with handling electrical mechanical
components, systems, and subsystems.
User shall operate the Evaluation Kit within TI’s recommended
guidelines and any applicable legal or environmental requirements
as well as reasonable and customary safeguards. Failure to set up
and/or operate the Evaluation Kit within TI’s recommended
guidelines may result in personal injury or death or property
damage. Proper set up entails following TI’s instructions for
electrical ratings of interface circuits such as input, output and
electrical loads.
NOTE:
EXPOSURE TO ELECTROSTATIC DISCHARGE (ESD) MAY CAUSE DEGREDATION OR FAILURE OF THE EVALUATION
KIT; TI RECOMMENDS STORAGE OF THE EVALUATION KIT IN A PROTECTIVE ESD BAG.

www.ti.com
2
3Regulatory Notices:
3.1 United States
3.1.1 Notice applicable to EVMs not FCC-Approved:
FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software
associated with the kit to determine whether to incorporate such items in a finished product and software developers to write
software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or
otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition
that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference.
Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must
operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.
3.1.2 For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:
CAUTION
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to
operate the equipment.
FCC Interference Statement for Class A EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.
FCC Interference Statement for Class B EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
3.2 Canada
3.2.1 For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 or RSS-247
Concerning EVMs Including Radio Transmitters:
This device complies with Industry Canada license-exempt RSSs. Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
Concernant les EVMs avec appareils radio:
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation
est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.
Concerning EVMs Including Detachable Antennas:
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types
listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.