Texas Instruments LMS3655AQEVM User manual

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LMS36x5x-Q1 EVM User's Guide
User's Guide
SNVU542–July 2017
LMS36x5x-Q1 EVM User's Guide
The LMS3655xQEVM is specifically designed for automotive and high-performance industrial applications,
providing an output voltage of 5 V, 3.3 V, or an adjustable output at a continuous load of 5.5-A. The
LMS3635xQEVM is implemented using the same PCB board and components, but the IC current limit is
set for a maximum continuous load of 3.5-A. The LMS3655xQEVM can be used to evaluate both the
LMS3655-Q1 IC and the LMS3655 IC.
Figure 1. LMS3635xQEVM and LMS3655xQEVM Evaluation Board – Top View
All aspects of the LMS3635xQEVM and LMS3655xQEVM are optimized for high-performance industrial
and automotive markets. An input voltage range to 36 V eases the input surge protection design.
Exceptional dropout performance allows for the elimination of a boost stage in many designs for start and
stop applications. An open-drain RESET output, with filtering and Power Good delay, provides a true
indication of system status. This feature negates the requirement for additional supervisory circuitry,
saving cost, and board space. Seamless transition between PWM and PFM operation, along with a low
quiescent current, ensures high efficiency at all loads. The Texas Instruments LMS3655xQEVM and
LMS3635xQEVM help to evaluate the operation and performance of the LMS3655-Q1, LMS3655, and
LMS3635-Q1. The LMS36x5xQEVM is available for order in four variants.
See Table 1 for orderable EVM variants and configurations.
Table 1. Orderable EVM Variants and Configuration for LM53625 and LM53635
EVM
VARIANT EVM ORDERABLE NAME IC U1 CONTINUOUS LOAD OUTPUT VOLTAGE SPREAD SPECTRUM AVAILABLE
001 LMS3655AQEVM LMS3655AQRNLRQ1 5.5 A 5 V Adjusted — Yes
002 LMS3655MQEVM LMS3655MQRNLRQ1 5.5 A 5 V Adjusted Yes Yes
003 LMS3655NQEVM LMS3655NQRNLRQ1 5.5 A 3.3 V Fixed Yes Yes
004 LMS3635MQEVM LMS3635MQRNLRQ1 3.5 A 5 V Adjusted Yes Yes

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Contents
1 Technical Specification EVM Board....................................................................................... 2
2 Schematics ................................................................................................................... 3
3 Board Layout ................................................................................................................. 5
4 Operation and Test Setup .................................................................................................. 9
4.1 Efficiency Measurement ........................................................................................... 9
4.2 Measure Load Transient ......................................................................................... 10
4.3 Measure EMI....................................................................................................... 10
5 Posts, Probes, and Jumpers.............................................................................................. 11
5.1 VIN1 and GND1 Posts............................................................................................ 11
5.2 VOUT and GND Posts............................................................................................ 11
5.3 IN+ and IN– Posts................................................................................................. 11
5.4 EN and GND2 Probe ............................................................................................. 11
5.5 VINS, VOUTS, and GNDS Probe............................................................................... 11
5.6 BIAS and GNDS Probe........................................................................................... 11
5.7 RESET and GND3 Probe ........................................................................................ 11
5.8 SYNC and GND3 Probe.......................................................................................... 11
5.9 Jumper J1 .......................................................................................................... 12
5.10 Jumper J2 .......................................................................................................... 12
5.11 Jumper J3 .......................................................................................................... 12
6 Bill of Materials ............................................................................................................. 12
7 Efficiency and Line and Load Regulation ............................................................................... 14
7.1 Load Transients ................................................................................................... 15
7.2 Conducted EMI .................................................................................................... 15
Trademarks
All trademarks are the property of their respective owners.
1 Technical Specification EVM Board
Table 2 shows specifications for the LMS3635xQEVM and LMS3655xQEVM board.
Table 2. Technical Specification
BOARD SIZE
4000 × 3000 mil 101 mm × 76 mm 76 cm2
BOARD LAYER
4-Layer FR4 PCB Top Layer1 and Bottom Layer2
Mid Layer2 and Mid Layer3 2.8-mil, 2-oz. Cu 1.4-mil, 1-oz. Cu
SOLUTION SIZE
700 mil × 1700 mil 17.78 mm × 43.18 mm 7.68 cm2
POWER INPUT
VIN1 and GND1
IN+ / IN– Power Supply Input Power Input for EMI Test typical 13.5 V (range 3.5 to 36 V) typical 13.5 V (range 3.5 to 36 V)
POWER OUTPUT
VOUT and GND Power Output to Load typical 3.3 V or 5 V
JUMPERS
J1 FPWM pin
J2 ENABLE pin
J3 RESET pin
Auto Mode or Forced PWM
Enable LMS3635x and LMS3655x
Open-drain output
Set – Default [AUTO-MODE]
Set – Default [EN-VIN]
Optional - [RESET-VOUT]
TEST POINTS
GNDS, GND2 and GND3
EN
VINS
VOUTS
BIAS
RESET
SYNC
Sense GND Points
Enable Pin Voltage
Input Voltage Sense
Output Voltage Sense
BIAS Voltage Sense
RESET output
Switch node SYNC input
Sense Ground
If J2[EN-VIN], then EN = VIN1 3.5 to 36 V
Sense VIN1 3.5 to 36 V
Sense VOUT typical 3.3 V or 5 V
Sense BIAS typical 3.3 V or 5 V
If J3 [RESET-VOUT], then RESET = VOUTS
External sync frequency source

All capacitors at input of LMS3655/35
should be rated to 50VDC. VOUT: 3.3V/5V
IOUT: 5.5A/3.5A
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2 Schematics
Figure 2. Fixed - Output Voltage Option Schematic
The fixed voltage option has an internal resistor divider, and the FB pin connects directly to the output capacitance.
NOTE: Cvcc and Cbias must connect directly to AGND, pin 20.

All capacitors at input of LMS3655/35
should be rated to 50VDC. VOUT: 3.3V/5V
IOUT: 5.5A/3.5A
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Figure 3. Adjustable - Output Voltage Option Schematic
The adjustable output option uses an external resistor divider to define output voltage. The CFF capacitor can be adjusted to make the feedback
loop response faster for load transients. By lowering the total resistance of the feedback divider, the noise immunity can be increased.
NOTE: To minimize noise coupling into the feedback pin, the maximum resistance recommended for the feedback resistor RFBT is 50 kΩ. The
feedback resistors RFBB and RFBT must be placed as close to the FB pin as possible, and RFBB must be grounded to the AGND pin.

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3 Board Layout
The LMS3655xQEVM uses a four-layer PCB stack-up design. Top Layer 1 and Bottom Layer 4 are
implemented using 2-oz. copper for optimized heat transfer and dissipation. Mid Layer 2 and Mid Layer 3
use 1-oz. copper. Total PCB thickness is 61 mil (1.55 mm).
Figure 4. Four-Layer PCB Stack-Up
The overall EVM PCB board size dimension is 4000 mil × 3000 mil (101 mm × 76 mm) with a top surface
area of 76 cm2. All vias on the PCB are constructed using 8-mil drill through-hole with 16-mil pad size.
Figure 5 to Figure 8 shows the PCB Layout for each Cu Layer. Top Layer 1 and Bottom Layer 4 are
constructed using large filled Cu areas connected to GND. This is done to improve thermal performance
as well as improve overall EMI performance. Mid Layer 2 is constructed using a large GND plane. The
purpose is to minimize loop inductance by placing metal directly under the Top Layer 1 traces, which
minimizes the cross section of current loops. Mid Layer 3 is mainly used to route non-critical signal traces
to the IC.
NOTE: The PCB layout is not fully optimized to use for final applications, but gives a good starting
point. The layout can be simplified and optimized by eliminating features included for
evaluation purposes such as measurement sense lines, jumper connections, and features
unused in a particular application such as the feedback resistor divider for fixed voltage
options.

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Figure 5. PCB Layout Top Layer 1 – Top View
Figure 6. PCB Layout Mid Layer 2 GND Plane – Top View

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Figure 7. PCB Layer Mid Layer 3 – Top View
Figure 8. PCB Layer Bottom Layer 4 – Flipped View (as Seen From Bottom of Board)

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Figure 9. PCB Layer Composite Top
Figure 10. PCB Layer Composite Bottom

CAUTION
Caution Hot surface.
Contact may cause burns.
Do not touch.
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4 Operation and Test Setup
4.1 Efficiency Measurement
1. Connect power supply to posts VIN1 and GND1, and verify that the power supply provides sufficient
current.
NOTE: There is no reverse polarity protection or fuse on the evaluation board.
2. Connect electronic load to posts VOUT and GND. For all power wires, it is preferable to use twisted
lab wires to reduce inductive parasitic of lab cables. If the power supply wires are very long > 50 cm,
solder additional 470-µF, 50-V bulk capacitor to posts VIN1 and GND1. Always use sufficient power
wires and separate measurement sense wires.
NOTE: These sense lines are not designed to carry power.
3. To accurately sense input and output voltage use the test points VINS, VOUTS, and GNDS.
Alternatively, sense wires can be soldered directly over input capacitors Cin1, Cin2, Cin3, or Cin4 and
the output capacitors Co1, Co2, Co3, and Co4.
4. Make sure the IC is enabled by having jumper J2 set to [EN-VIN] and check test point EN is driven
high. While measuring IQ_VIN (unloaded input current), remove all the input and output voltage probes
that are most likely causing additional current draw.
NOTE: If the jumper J1 is set to [MODE-FPWM], the part will have a lower efficiency at light loads
by maintaining the 400-kHz switch frequency. To measure the highest light load efficiency
place the Jumper J1 in [AUTO-MODE].

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4.2 Measure Load Transient
1. Connect power supply to posts VIN1 and GND1, and make sure the power supply can provide
sufficient peak current.
NOTE: There is no reverse polarity protection or fuse on the evaluation board.
2. Connect transient load to posts VOUT and GND. For all power wires, it is preferable to use twisted lab
wires to reduce inductive parasitic of lab cables. If the power supply wires are very long > 50 cm,
solder additional 470-µF, 50-V bulk capacitor to posts VIN1 and GND1. Use sufficient power wires to
avoid voltage drops and use short sense probe connection for the measurement.
3. To accurately sense the output voltage, the scope probe must be placed directly over the output
capacitors Co1, Co2, Co3, and Co4. Make sure to connect the scope probe GND ring directly to the
output capacitor GND pad for minimal ground loop. Ground loops can introduce ringing in observed
waveforms which is an artifact; not present on the PCB. Alternatively use a differential probe over the
output capacitors. Do not use wires as a differential probe and always probe directly with shortest
possible pins.
Make sure the IC is enabled by having jumper J2 set to [EN-VIN] and check test point EN is driven
high and not drooping during the load transient.
4.3 Measure EMI
1. Connect power supply cable from LISN to posts IN+ and IN–, and make sure the board is placed 5 cm
above the table.
NOTE: The length of the LISN cable to VIN+/VIN– must be between 20 cm to 40 cm for conducted
EMI CISPR 25.
2. Connect resistive load directly to posts VOUT and GND. Use extremely short leads.
NOTE: To accurately measure EMI, make sure the table has a good ground connection to the
chamber; connect the battery GND cable to the table without touching the EVM, especially
the region near the switch node. The board has a very effective 3-stage EMI filter where the
common-mode choke is not assembled by default. If the common-mode choke is added,
remove the bypass resistors R1 and R2.
Figure 11. 3-Stage EMI Filter Schematic

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5 Posts, Probes, and Jumpers
5.1 VIN1 and GND1 Posts
The VIN1 and GND1 posts are standard input posts for connecting a power supply. The maximum input
voltage is 36 V with 42-V absolute maximum transient.
5.2 VOUT and GND Posts
The VOUT and GND posts are standard output posts for loading the EVM. Use sufficient lab cables and
preferably twisted wires to reduce inductive parasitic of lab cables. The typical output voltage is 5 V or 3.3
V.
5.3 IN+ and IN– Posts
Use IN+ and IN- for EMI measurements. When using IN+ and IN– posts, the IC is operated with an input
EMI filter. By default there is a 2-stage filter assembled with a wire wound Inductor PI-Filter for low
frequency filtering followed by a ferrite bead for high-frequency filtering. If one wishes to measure a setup
with a common-mode choke, add the choke by removing bypass resistors R1 and R2.
5.4 EN and GND2 Probe
EN and GND2 probe can be used to measure the enable voltage or drive it from external source. If an
external source is used, make sure to remove jumper J2. By default J2 jumper connects EN to VIN.
5.5 VINS, VOUTS, and GNDS Probe
VINS and VOUTS are sense points for input and output voltage.
NOTE: Do not use for power supply or load.
These probe points are intended for use as kelvin sense points for static measurements including
efficiency, line regulation, and load regulation. For dynamic measurements please measure directly over
the input capacitors Cin1, Cin2, Cin3, and Cin4, and directly over the output capacitors Co1, Co2, Co3,
and Co4.
5.6 BIAS and GNDS Probe
The BIAS probe senses the bias voltage to the IC. Bias voltage is provided from the output voltage of the
IC over Rbias = 3-Ωresistor. An external bias supply voltage can be provided by removing Rbias to
disconnect IC output voltage as the source for bias.
5.7 RESET and GND3 Probe
RESET provides an accurate Power Good signal with release delay. By default jumper J3 is set to VOUT
and pulls the RESET pin to VOUT through a 100-kΩresistor. Since RESET is an open-drain output, it can
also be pulled to other external voltage levels by removing jumper J3.
5.8 SYNC and GND3 Probe
By default the IC is running with internal oscillator at 400 kHz. Over the SYNC pin, an external function
generator can be connected to take control of the LMS3635 and LMS3655’s clock, changing the switching
frequency. SYNC function can be used for custom frequency modulation techniques. Spread spectrum will
always be disabled when a SYNC signal is present.

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5.9 Jumper J1
Jumper J1 sets light load operation mode of the IC. If set to [AUTO-MODE] when lightly loaded the IC
goes automatically into PFM operation with fewer switching pulses and higher efficiency. The IC can be
set into forced PWM mode (jumper position is marked FPWM) to operate with a constant switching
frequency over the entire load range. This forced FPWM mode of operation will have improved load
transient behavior because there is no operation mode change during load transient steps.
5.10 Jumper J2
Jumper J2 enables the IC. By default it is set to [EN-VIN] and pulls the enable pin through a 100-kΩ
resistor to Vin. If an external source drives the EN pin, then remove jumper J2 and use probe points EN
and GND2 or use a 3-pin wire connector directly plugged over J2.
5.11 Jumper J3
Jumper J3 pulls the open-drain RESET output to VOUT through a 100-kΩresistor. If another RESET
output level is needed, use probe point RESET and pullup resistor to external reference voltage and
remove jumper J3.
6 Bill of Materials
Table 3. Bill of Materials
DESIGNATOR QTY VALUE DESCRIPTION PART NUMBER
C1 1 0.47 µF CAP, CERM, 0.47 µF, 25 V, ±10%, X7R, 0603 GRM188R71E474KA12D
C2 1 10 µF CAP, CERM, 10 µF, 50 V, ±10%, X7R, 1210 UMK325AB7106KM-T
C3 1 4.7 µF CAP, CERM, 4.7 µF, 16 V, +/- 10%, X7R, AEC-Q200
Grade 1, 0805 GCM21BR71C475KA73L
C4 1 120 µF CAP, AL, 120 µF, 16 V, +/- 20%, 0.024 ohm, SMD APXE160ARA121MH70G
C5 1 33 µF CAP, Aluminum Polymer, 33 µF, 50 V, +/- 20%, 0.04 ohm,
AEC-Q200 Grade 1, D6.3xL7.7mm SMD HHXA500ARA330MF80G
C6, C9 2 0.1 µF CAP, CERM, 0.1 µF, 50 V, ±10%, X7R, AEC-Q200 Grade
1, 0603 06035C104KAT2A
C7, C8, C10, C11 4 4.7 µF CAP, CERM, 4.7 µF, 50 V, ±20%, X7R, AEC-Q200 Grade
1, 1210 CGA6P3X7R1H475M250AB
C12, C15 2 0.047 µF CAP, CERM, 0.047 µF, 50 V, +/- 10%, X7R, 0603 GRM188R71H473KA61D
C18 1 0.1 µF CAP, CERM, 0.1 µF, 16 V, +/- 10%, X7R, AEC-Q200
Grade 1, 0603 GCM188R71C104KA37J
FB1 1 800 ΩFerrite Bead, 800 Ωat 100 MHz, 8A, 1206 HR2220V801R-10
H1, H2, H3, H4 4 Machine Screw, Round, #4-40 × 1/4, Nylon, Philips
panhead NY PMS 440 0025 PH
H5, H6, H7, H8 4 Standoff, Hex, 0.5"L #4-40 Nylon 1902C
J1, J2 2 Header, 100 mil, 3×1, Gold, TH HTSW-103-07-G-S
J3 1 Header, 100 mil, 2×1, Gold, TH HTSW-102-07-G-S
L1 1 4.7 µH Inductor, Wirewound, Ferrite, 4.7 µH, 7.5 A, 0.0135 ohm,
SMD 7443340470
L2 1 10 µH Inductor, Shielded Drum Core, WE-Superflux200, 10 µH,
7.5 A, 0.0163 ohm, SMD 7443251000
LBL1 1 Thermal Transfer Printable Labels, 0.650" W x 0.200" H -
10,000 per roll THT-14-423-10
LCM 1 Coupled inductor, 5 A, 0.01 Ω, SMD ACM9070-701-2PL-TL01
R1, R2 2 0 ΩRES, 0Ω, 5% 0.25 W, 1206 CRCW12060000Z0EA
R2 1 3 ΩRES, 3 Ω, 5%, 0.063 W, 0402 CRCW04023R00JNED
R6, R7, R8 3 100 k RES, 100 K, 5%, 0.1 W, 0603 CRCW0603100KJNEA
SH-J1, SH-J2, SH-J3 3 1×2 Shunt, 100 mil, Gold plated, Black 969102-0000-DA
TP1 1 Test Point, Miniature, Red, TH 5010
TP2 1 Test Point, Miniature, Orange, TH 5013
TP3, TP4, TP6, TP7 4 Test Point, Multipurpose, White, TH 5012
TP5, TP8 2 Test Point, Miniature, Black, TH 5011

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Table 3. Bill of Materials (continued)
DESIGNATOR QTY VALUE DESCRIPTION PART NUMBER
Variant 001 LMS3655AQEVM Adjustable 5-V, 5.5-A Without Spread Spectrum
U1 1 3.5/5.5-A Synchronous Buck Regulator for Automotive
Applications, RNL0022A LMS3655AQRNLRQ1
R4 1 12.4 k RES, 12.4 k, 1%, 0.063 W, 0402 CRCW040212K4FKED
R3 1 49.9 k RES, 49.9 k, 1%, 0.063 W, 0402 CRCW040249K9FKED
C16, C17 2 10 µF CAP, CERM, 10 µF, 25 V, +/- 20%, X7R, 1210 C3225X7R1E106M250AC
C19 1 22 pF CAP, CERM, 22 pF, 50 V, ±5%, C0G/NP0, AEC-Q200
Grade 1, 0402 CGA2B2NP01H220J050BA
Variant 002 LMS3655MQEVM Adjustable 5-V, 5.5-A With Spread Spectrum
U1 1 3.5/5.5-A Synchronous Buck Regulator for Automotive
Applications, RNL0022A LMS3655MQRNLRQ1
R4 1 12.4 k RES, 12.4 k, 1%, 0.063 W, 0402 CRCW040212K4FKED
R3 1 49.9 k RES, 49.9 k, 1%, 0.063 W, 0402 CRCW040249K9FKED
C16, C17 2 10 µF CAP, CERM, 10 µF, 25 V, +/- 20%, X7R, 1210 C3225X7R1E106M250AC
C19 1 22 pF CAP, CERM, 22 pF, 50 V, ±5%, C0G/NP0, AEC-Q200
Grade 1, 0402 CGA2B2NP01H220J050BA
Variant 003 LMS3655NQEVM Fixed 3.3-V, 5.5-A With Spread Spectrum
U1 1 3.5/5.5-A Synchronous Buck Regulator for Automotive
Applications, RNL0022A LMS3655NQRNLRQ1
R4 0 DNP
R3 1 0 ΩRES, 0 Ω, 5%, 0.063 W, 0402 CRCW04020000Z0ED
C16 1 22 µF CAP, CERM, 22 µF, 16 V, +/- 20%, X7R, AEC-Q200
Grade 1, 1210 CGA6P1X7R1C226M250AC
C17, C20 2 22 µF CAP, CERM, 22 µF, 16 V, +/- 10%, X7R, 1210 GCM32ER71C226KE19L
C19 0 DNP
Variant 004 LMS3635MQEVM Adjustable 5-V, 3.5-A With Spread Spectrum
U1 1 3.5/5.5-A Synchronous Buck Regulator for Automotive
Applications, RNL0022A LMS3635MQRNLRQ1
R4 1 12.4 k RES, 12.4 k, 1%, 0.063 W, 0402 CRCW040212K4FKED
R3 1 49.9 k RES, 49.9 k, 1%, 0.063 W, 0402 CRCW040249K9FKED
C16, C17 2 4.7 µF CAP, CERM, 4.7 µF, 50 V, +/- 20%, X7R, AEC-Q200
Grade 1, 1210 CGA6P3X7R1H475M250AB
C19 1 22 pF CAP, CERM, 22 pF, 50 V, ±5%, C0G/NP0, AEC-Q200
Grade 1, 0402 CGA2B2NP01H220J050BA

Output Voltage (V)
Output Current (A)
0 1 2 3 4 5 6
5
5.01
5.02
5.03
5.04
5.05
5.06
5.07
5.08
5.09
5.1
LMS3
6.0 VIN
8.0 VIN
12.0 VIN
13.5 VIN
24.0 VIN
36.0 VIN
Output Current (A)
Output Voltage (V)
0 1 2 3 4 5 6
5.008
5.01
5.012
5.014
5.016
5.018
5.02
5.022
5.024
5.026
5.028
5.03
LMS3
6.0 VIN
8.0 VIN
12.0 VIN
13.5 VIN
24.0 VIN
36.0 VIN
Output Current (A)
Efficiency
0.001 0.01 0.1 1 10
0
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
LMS3
6.0 VIN
8.0 VIN
12.0 VIN
13.5 VIN
24.0 VIN
36.0 VIN
Output Current (A)
Efficiency
0 1 2 3 4 5 6
50%
55%
60%
65%
70%
75%
80%
85%
90%
95%
100%
LMS3
6.0 VIN
8.0 VIN
12.0 VIN
13.5 VIN
24.0 VIN
36.0 VIN
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7 Efficiency and Line and Load Regulation
The LMS3655MQEVM variant is used for all measurements and curves in Figure 12 to Figure 20.
VOUT = 5 V (ADJ) AUTO
Figure 12. LMS3655MQEVM Efficiency
VOUT = 5 V (ADJ) FPWM
Figure 13. LMS3655MQEVM Efficiency
VOUT = 5 V AUTO
Figure 14. LMS3655MQEVM Load and Line Regulation
VOUT = 5 V FPWM
Figure 15. LMS3655MQEVM Load and Line Regulation

100mV/div
875mA/div 100µs/div
VOUT
IOUT
100mV/div
875mA/div
100µs/div
VOUT
IOUT
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7.1 Load Transients
VOUT = 5 V IOUT = 0 A to 3.5 A, FPWM
TR= TF= 1 µs
Figure 16. LMS3655MQEVM Load Regulation
VOUT = 5 V IOUT = 200 mA to 3.5 A, AUTO
TR= TF= 1 µs
Figure 17. LMS3655MQEVM Load Transients
NOTE: The output capacitance for all four variants is designed for stable operation across all load
transients and optimized performance with a maximum load transient of 0 to 3.5 A. For
applications which require superior load transient performance beyond this range, TI
recommends increasing the output capacitance. The best starting point for an optimized
design is the Texas Instruments WEBENCH Design Tool.
7.2 Conducted EMI
Figure 18. Conducted EMI Setup

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Figure 19. LMS3655MQEVM Low Frequency Conducted
EMI Results for 5 Vout With Spread Spectrum. Blue-
Average and Yellow-Peak
Figure 20. LMS3655MQEVM High Frequency Conducted
EMI Results for 5 Vout With Spread Spectrum. Blue-
Average and Yellow-Peak

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.
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.
Concernant les EVMs avec antennes détachables
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et
d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope
rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le
présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le
manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne
non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de
l'émetteur
3.3 Japan
3.3.1 Notice for EVMs delivered in Japan: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 日本国内に
輸入される評価用キット、ボードについては、次のところをご覧ください。
http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page
3.3.2 Notice for Users of EVMs Considered “Radio Frequency Products” in Japan: EVMs entering Japan may not be certified
by TI as conforming to Technical Regulations of Radio Law of Japan.
If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required to follow the
instructions set forth by Radio Law of Japan, which includes, but is not limited to, the instructions below with respect to EVMs
(which for the avoidance of doubt are stated strictly for convenience and should be verified by User):
1. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal
Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for
Enforcement of Radio Law of Japan,
2. Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to
EVMs, or
3. Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan
with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note
that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.

【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて
いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの
措置を取っていただく必要がありますのでご注意ください。
1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用
いただく。
2. 実験局の免許を取得後ご使用いただく。
3. 技術基準適合証明を取得後ご使用いただく。
なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。
上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ
ンスツルメンツ株式会社
東京都新宿区西新宿６丁目２４番１号
西新宿三井ビル
3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧ください。http:/
/www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
3.4 European Union
3.4.1 For EVMs subject to EU Directive 2014/30/EU (Electromagnetic Compatibility Directive):
This is a class A product intended for use in environments other than domestic environments that are connected to a
low-voltage power-supply network that supplies buildings used for domestic purposes. In a domestic environment this
product may cause radio interference in which case the user may be required to take adequate measures.
4EVM Use Restrictions and Warnings:
4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT
LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling
or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information
related to, for example, temperatures and voltages.
4.3 Safety-Related Warnings and Restrictions:
4.3.1 User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user
guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and
customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input
and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or
property damage. If there are questions concerning performance ratings and specifications, User should contact a TI
field representative prior to connecting interface electronics including input power and intended loads. Any loads applied
outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible
permanent damage to the EVM and/or interface electronics. Please consult the EVM user 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, even with the inputs and outputs kept within the specified allowable ranges, some circuit
components may have elevated case temperatures. These components include but are not limited to linear regulators,
switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the
information in the associated documentation. When working with the EVM, please be aware that the EVM may become
very warm.
4.3.2 EVMs 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 assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees,
affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic
and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely
limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and
liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or
designees.
4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal,
state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all
responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and
liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local
requirements.
5. Accuracy of Information: To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate
as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as
accurate, complete, reliable, current, or error-free.

6. Disclaimers:
6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY MATERIALS PROVIDED WITH THE EVM (INCLUDING, BUT NOT
LIMITED TO, REFERENCE DESIGNS AND THE DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL
FAULTS." TI DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT
NOT LIMITED TO ANY EPIDEMIC FAILURE WARRANTY OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADE
SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS.
6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS SHALL BE
CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY OTHER INDUSTRIAL OR
INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD PARTY, TO USE THE
EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY INVENTION, DISCOVERY OR
IMPROVEMENT, REGARDLESS OF WHEN MADE, CONCEIVED OR ACQUIRED.
7. USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS
LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES,
EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY
HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS. THIS OBLIGATION SHALL APPLY
WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY OTHER LEGAL
THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED.
8. Limitations on Damages and Liability:
8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE,
INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE
TERMS OR THE USE OF THE EVMS , REGARDLESS OF WHETHER TI HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED TO, COST OF REMOVAL OR
REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, RETESTING,
OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS, LOSS OF SAVINGS, LOSS OF
USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL BE BROUGHT AGAINST TI
MORE THAN TWELVE (12) MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS
OCCURRED.
8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY USE OF AN EVM PROVIDED
HEREUNDER, INCLUDING FROM ANY WARRANTY, INDEMITY OR OTHER OBLIGATION ARISING OUT OF OR IN
CONNECTION WITH THESE TERMS, , EXCEED THE TOTAL AMOUNT PAID TO TI BY USER FOR THE PARTICULAR
EVM(S) AT ISSUE DURING THE PRIOR TWELVE (12) MONTHS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE
CLAIMED. THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT.
9. Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s)
will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in
a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable
order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s),
excluding any postage or packaging costs.
10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas,
without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to
these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas.
Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief
in any United States or foreign court.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2017, Texas Instruments Incorporated