Texas instruments UCC25640EVM-020 User Manual

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UCC25640EVM-020 Evaluation Module

User's Guide

Literature Number: SLUUBX3B

June 2019–Revised November 2019

WARNING

General Texas Instruments High Voltage Evaluation (TI HV EMV) User Safety Guidelines

Always follow TI's set-up and application instructions, including use of all interface components within their recommended electrical rated voltage and power limits. Always use electrical safety precautions to help ensure your personal safety and those working around you. Contact TI's Product Information Center

http://ti.com/customer support for further information.

Save all warnings and instructions for future reference.

WARNING

Failure to follow warnings and instructions may result in personal injury, property damage or death due to electrical shock and burn hazards.

The term TI HV EVM refers to an electronic device typically provided as an open framed, unenclosed printed circuit board assembly. It is intended strictly for use in development laboratory environments,

solely for qualified professional users having training, expertise and knowledge of electrical safety risks in development and application of high voltage electrical circuits. Any other use and/or application are strictly prohibited by Texas Instruments. If you are not suitable qualified, you should immediately stop from further

use of the HV EVM.

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1. Work Area Safety: a. Keep work area clean and orderly. b. Qualified observer(s) must be present anytime circuits are energized. c. Effective barriers and signage must be present in the area where the TI HV EVM and its interface

electronics are energized, indicating operation of accessible high voltages may be present, for the purpose of protecting inadvertent access.

d. All interface circuits, power supplies, evaluation modules, instruments, meters, scopes, and other

related apparatus used in a development environment exceeding 50Vrms/75VDC must be

electrically located within a protected Emergency Power Off EPO protected power strip. e. Use stable and non-conductive work surface. f. Use adequately insulated clamps and wires to attach measurement probes and instruments. No

freehand testing whenever possible.

2. Electrical Safety: As a precautionary measure, it is always good engineering practice to assume that the entire EVM

may have fully accessible and active high voltages.

a. De-energize the TI HV EVM and all its inputs, outputs and electrical loads before performing any

electrical or other diagnostic measurements. Revalidate that TI HV EVM power has been safely de-energized.

b. With the EVM confirmed de-energized, proceed with required electrical circuit configurations,

wiring, measurement equipment hook-ups and other application needs, while still assuming the EVM circuit and measuring instruments are electrically live.

c. Once EVM readiness is complete, energize the EVM as intended.

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3. Personal Safety

Limitation for safe use:

EVMs are not to be used as all or part of a production unit.

WARNING

While the EVM is energized, never touch the EVM or its electrical circuits, as they could be at high voltages capable of causing electrical shock hazard.

a. Wear personal protective equipment e.g. latex gloves or safety glasses with side shields or protect

EVM in an adequate lucent plastic box with interlocks from accidental touch.

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1 Introduction

The purpose of the UCC25640EVM-020 (EVM) is to aid in evaluation of the UCC256403 and UCC256404 LLC resonant controller. The EVM is a stand-alone LLC resonant half-bridge DC-DC power converter designed to operate with DC input from 365 VDC to 410 VDC, AC input from 85 to 265 V and a nominal output of 12 VDC up to 180-W. The EVM is delivered using a diode rectifier at the output. The user has the option to evaluate this converter with a synchronous rectifier (SR) by populating the UCC24624 and SR FETs. This user’s guide provides basic evaluation instruction from a viewpoint of system operation of the stand-alone LLC resonant power converter.

User's Guide

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UCC25640EVM-020 Evaluation Module

, 47 to 63 Hz,

RMS

Figure 1. UCC25640EVM-020 Top View

Figure 2. UCC25640EVM-020 Side View

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2 Description

2.1 Typical Applications

• SMPS power supply for TV

• Industrial AC-DC adapters

• Power tools

• Medical power supply

• Multi-functional printer

• Enterprise and cinema projector

• PC power supply

• Gaming console power supply

• Lighting

2.2 Features

• Hybrid hysteretic controlled LLC resonant half-bridge DC-DC power conversion

• DC line Input from 365 VDC to 410 VDC

• AC Input voltage from 85 VDC to 265 VAC

• Regulated 12-VDC typical output

• Regulated 9.75-VDC low power mode output

• Full-load power of 180 W, or full-load current of 15 A

• High efficiency

• Optimized low power features enable extremely low standby power

• Advanced burst mode with burst soft-on and soft-off for minimized audible noise

• Adaptive dead-time

• X-capacitor discharge

• Over temperature, output over voltage, and three level over current protections

• Test points to facilitate device and topology evaluation

Description

2.3 Using the EVM with UCC256402

• Replace U4 with UCC256402

• Replace R37 with 124kΩ

• Connect TP1 to TP14

• Disconnect the AC voltage source

2.4 Using the EVM with UCC256403

UCC25640EVM-020 comes populated with UCC256404. To use this EVM with UCC256403:

• Replace U4 with UCC256403

• Remove R5 and R28

• Replace R37 with 124 kΩ

• Remove C25

• Replace R57 with 1.07kΩ

• Replace C46 with 2.2nF

• Replace C36 with 33 nF

• Connect a 15 V DC source to TP6

• Disconnect the AC voltage source

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Description

2.5 Using the EVM with UCC24624 Synchronous Rectifier Controller

UCC25640EVM-020 is delivered using the diode rectifier at the output. The option to evaluate the converter with synchronous rectification (SR) is available to the user. SR is often used to increase efficiency by replacing the freewheeling diode with a lower loss FET.

To use this EVM with UCC24624:

• Remove D2 and D5

• Populate R31 and R32 with 0Ω

• Populate R35 with 10Ω

• Populate R53 and R54 with 532Ω

• Populate R55 with 39.2Ω

• Populate R2 and R7 with 10Ω

• Populate C2 and C19 with 1.2nF

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3 Performance Specifications

Table 1. UCC25640EVM-020 Specifications

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

INPUT CHARACTERISTICS

DC voltage range 365 390 410 VDC AC voltage range 85 265 VAC AC voltage frequency 47 63 Hz Input DC UVLO On 365 VDC Input DC UVLO Off 330 VDC

OUTPUT CHARACTERISTICS

OUT

Output voltage - Normal mode Burst mode threshold to full load =

Output voltage - Standby mode No load to burst mode threshold 9.75 VDC Burst mode threshold output

current limit (rising) Burst mode threshold output

current limit (falling) Output load current 365 to 410 VDC 15 A Output voltage ripple 390 VDC and full load = 15 A 120 mVpp

SYSTEM CHARACTERISTICS

Resonant frequency 100 kHz Peak efficiency 390 VDC, load = 8 A 93% Operating temperature Natural convection 25 ºC

Performance Specifications

12 VDC

15 A

240 mA

110 mA

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Schematic Diagram

4 Schematic Diagram

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UCC25640EVM-020 Evaluation Module

Figure 3. UCC25640EVM-020 Power Stage Schematic

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Schematic Diagram

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Figure 4. UCC25640EVM-020 Control Schematic

UCC25640EVM-020 Evaluation Module

Test Setup

5 Test Setup

5.1 Test Equipment

DC Voltage Source: Capable of 365 VDC to 410 VDC, adjustable, with minimum power rating 500 W, or current rating not less than 1 A, with current limit function. The DC voltage source to be used should meet IEC 60950 reinforced insulation requirement.

AC Voltage Source: Capable of single-phase output AC voltage 85 to 265 VAC, 47 to 63 Hz, adjustable, with minimum power rating 100 W and current limit function. The AC voltage source to be used should meet IEC 60950 reinforced insulation requirement.

DC Digital Multimeter: One unit capable of 0-VDC to 450-VDC input range, four digit display preferred; and one unit capable of 0-VDC to 20-VDC input range, four digit display preferred.

Output Load: : DC load capable of receiving 0 VDC to 20 VDC, 0 A to 15 A, and 0 W to 300 W or greater, with the capability to display information such as load current and load power.

Oscilloscope: Capable of 500-MHz full bandwidth, digital or analog: if digital, 5 Gsps, or better. Fan: 200 to 400 LFM forced air cooling is recommended, but not required. Recommended Wire Gauge: Capable of 25 A, or better than #14 AWG, with the total length of wire less

than 8 feet (4 feet input and 4 feet return).

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5.2 Recommended Test Setup

Figure 5. UCC25640EVM-020 Test Setup Diagram

Test Setup

WARNING

High voltages that may cause injury exist on this evaluation module (EVM). Please ensure all safety procedures are followed when working on this EVM. Never leave a powered EVM unattended.

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Test Setup

5.3 Power Factor Correction (PFC) Boost Front End Setup

UCC25640EVM-020 is typical for a two stage AC/DC power supply with a PFC boost converter in front of it. The following steps and schematic describe how to connect the UCC28056EVM-296 or

UCC28064EVM-004, Transition-Mode (TM) PFC Controllers, to this EVM.

1. Remove D8 and D9 from UCC25640EVM-020.

2. Connect the anode of D8 to AC Line and the anode of D9 to AC Neutral on UCC28056EVM-296 or

UCC28064EVM-004.

3. Connect both the cathodes of D8 and D9 to TP14 on UCC25640EVM-020.

4. Connect TP15 (RVCC) on UCC25640EVM-020 to TP9 (VCC) on UCC28056EVM-296 or J1-1 (VCC)

on UCC28064EVM-004.

Figure 6 is a diagram of the PFC LLC setup used for testing.

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Figure 6. UCC28056EVM-296/UCC28064EVM-004 PFC to UCC25640EVM-020 LLC Test Setup

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6 Test Points

Table 2 lists the EVM test points.

Test Points Name Description

Table 2. Test Points

TP1 VIN Input voltage positive terminal TP2 HO Primary-side high side MOSFET gate, Q1 TP3 SGND Secondary-side ground TP4 SGND Secondary-side ground

TP5 HS TP6 VCC Supply input

TP7 LO Primary-side low side MOSFET gate, Q3 TP8 PGND Primary-side ground

TP9 PGND Primary-side ground TP10 VOUT Output voltage positive terminal TP11 INJECT Small signal injection terminal TP12 FB_Current Feedback current measurement TP13 HV High-voltage start pin TP14 AC_Rect Rectified AC input TP15 RVCC Regulated 12-V supply TP16 BLK Input voltage sensing TP17 AC_L AC line TP18 AC_N AC neutral TP19 LL/SS Soft-start and light-load burst mode threshold TP20 ISNS Resonant current sense TP21 BW Bias winding voltage sense TP22 VCR Resonant capacitor voltage sense

Primary-side switch node, or the intersection of Q1 and Q3

Test Points

7 Terminals

Table 3 lists the EVM terminals.

Terminal Name Description

J1 VIN Input voltage positive terminal J2 PGND Input voltage return terminal J8 AC Input 3-pin, AC power input, 85–265 V T2 VOUT Output voltage positive terminal T3 SGND Output voltage ground terminal

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Table 3. List of Terminals

RMS

UCC25640EVM-020 Evaluation Module

Test Procedure

8 Test Procedure

Use the following steps for the test procedure:

1. Refer to Section 5.2 for basic setup. The required equipment for this measurement is listed in

Section 5.1.

2. Before making electrical connections, visually check the board to make sure there are no suspected spots of damage.

3. Keep the DC voltage source output off. Connect the DC source to J1 (+) and J2 (-). The DC voltage source should be isolated and meet the IEC 60950 requirement. Set the DC output voltage within the range specified in Table 1, between 365 VDC and 410 VDC; set the DC source current limit to 1 A.

The board has no fuse installed and relies on the external voltage source current limit to ensure circuit protection.

4. Keep the AC voltage source output off. Connect the source with AC_neutral to J8-1, AC_earth to J8-2, and AC_line to J8-3. Isolate the AC voltage source and meet the IEC 60950 requirement. Set the AC output voltage and frequency within the range specified in Table 1, between 85 and 265 VAC and 47 to 63 Hz. Set the AC source current limit to 200 mA.

5. Connect an electronic load set to either constant-current mode or constant-resistance mode. The load range is from 0 to 15 A.

6. If the load does not have a current or a power display, TI recommends inserting a current meter between the output voltage and the electronic load.

7. Connect a voltage meter to TP10 and TP3/TP4 to monitor the output voltage.

8. Turn on the AC source output.

9. Turn on the DC source output.

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CAUTION

8.1 Equipment Shutdown

Shut down the equipment using the following steps:

1. Shut down the AC voltage source.

2. Shut down the DC voltage source.

3. Shut down the electronic load.

High voltage may still be present on the resonant capacitors after turning off the DC source.

WARNING

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Performance Data and Typical Characteristic Curves

9 Performance Data and Typical Characteristic Curves

9.1 UCC25640EVM-020 Standalone Standby and Light Load Power

Table 4 lists the total standby and light load power measurement for the standalone EVM. The average

input power is measured over a two minute interval.

Table 4. Standalone Standby Power

(mA) V

OUT

0 9.740 0.000 389.826 0.115 44.666 10 9.739 97.392 389.823 0.393 153.093 20 9.739 194.772 389.820 0.672 261.815 50 9.739 486.925 389.814 1.514 590.186 100 9.738 973.820 389.807 2.914 1135.799

(V) P

OUT

(mW) VIN(V) IIN(mA) PIN(mW)

OUT

9.2 PFC Boost Front End Standby Power

9.2.1 Overview

UCC256404 includes a high voltage startup feature. This feature enables the controller to be powered by a wide AC input, eliminating the need for an external supply to power both the PFC and LLC. When AC power is applied to UCC256404, a JFET initially charges the VCC capacitor to provide the energy needed to start the PFC and LLC power system. Once running, power for the PFC and LLC controllers is derived from a bias winding on the LLC transformer. Figure 7 illustrates the described startup sequence. UCC256403 does not include the high voltage startup feature and requires an external power supply as described in Section 5.3.

Figure 7. PFC LLC Startup Sequence

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Performance Data and Typical Characteristic Curves

9.2.2 PFC LLC Standby Power and Light Load Efficiency

PFC LLC system standby power for UCC25640EVM-020 is measured with both UCC28056EVM-296 and UCC28064EVM-004. Refer to Section 5.3 for test setup and procedure. The WT310 power analyzer is used for PFC LLC standby and light load measurements.

Table 5. Total Standby Power with UCC28056EVM-296 (PFC) and UCC25640EVM-020 (LLC)

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VIN(V) PIN(W) V

90 0.218 9.697 0.0124 0.120 54.94 115 0.216 9.697 0.0124 0.120 55.44 230 0.223 9.697 0.0124 0.120 53.70 265 0.227 9.697 0.0124 0.120 52.76 90 0.361 9.697 0.0248 0.240 66.56 115 0.360 9.696 0.0248 0.240 66.74 230 0.364 9.697 0.0248 0.240 66.01 265 0.365 9.697 0.0248 0.240 65.83

(V) I

OUT

(A) P

OUT

(W) Efficiency (%)

OUT

Table 6. Total Standby Power with UCC28064EVM-004 (PFC) and UCC25640EVM-020 (LLC)

VIN(V) PIN(W) V

90 0.229 9.697 0.0124 0.120 52.29 115 0.228 9.696 0.0124 0.120 52.52 230 0.250 9.697 0.0124 0.120 47.90 265 0.260 9.697 0.0124 0.120 46.06 90 0.374 9.696 0.0248 0.240 64.24 115 0.370 9.696 0.0248 0.240 64.94 230 0.391 9.696 0.0248 0.240 61.45 265 0.400 9.696 0.0248 0.240 60.07

(V) I

OUT

(A) P

OUT

(W) Efficiency (%)

OUT

9.3 Efficiency

Figure 8 illustrates the standalone EVM efficiency graph.

Figure 8. Efficiency vs Output Current

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9.4 Load Regulation

Figure 9 illustrates the load regulation versus output current graph.

Performance Data and Typical Characteristic Curves

Figure 9. Load Regulation vs Output Current

9.5 Switching Frequency

Figure 10 illustrates the converter switching frequency versus output current.

Figure 10. Switching Frequency vs Output Current

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Performance Data and Typical Characteristic Curves

9.6 Audible Noise

Figure 11 and Figure 12 show the audible noise measurements during light load standby operation. The

measurements are performed in a soundproof container with the microphone 5 mm above the transformer.

Figure 11. Audible Noise Measurement at 10 mA Load

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Figure 12. Audible Noise Measurement at 20 mA Load

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9.7 Startup

The following waveforms show the output voltage and low side gate behavior. 115 VAC, 60 Hz is applied initially to the AC input, then the 390 VDC input is applied to the DC input

Performance Data and Typical Characteristic Curves

Figure 13. No Load (0 A) Startup (Ch2 = V

Figure 14. Full Load (15 A) Startup (Ch2 = V

; Ch3 = LO)

OUT

; Ch3 = LO)

OUT

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Performance Data and Typical Characteristic Curves

9.8 Thermal Image

The following images show the EVM temperature after 20min soak at full load, no forced air and 390Vdc input applied to the DC input.

Figure 15. Thermal Image Top

Table 7. Component Temperature

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Component Temperature (°C)

T1 (Bx1) 74.9°C D2 (Bx2) 90.2°C

Figure 16. Thermal Image Bottom

Table 8. Component Temperature

Component Temperature (°C)

U4 (Bx1) 42.3°C Q1 (Bx2) 44.9°C Q3 (Bx3) 46.1°C

R9, R12 (Bx4) 72.2°C

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9.9 Output Voltage Ripple

The following waveforms show the output voltage ripple with 115 VAC, 60 Hz applied to the AC input and 390 VDC applied to the DC input. The oscilloscope probe is AC coupled.

Performance Data and Typical Characteristic Curves

Figure 17. No Load (0 A) Output Ripple (Ch2 = V

Figure 18. Full Load (15 A) Output Ripple (Ch2 = V

OUT

)

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Performance Data and Typical Characteristic Curves

9.10 Load Transient Response

The following waveforms show the output voltage with 115 VAC, 60 Hz applied to the AC input and 390 VDC applied to the DC input. Figure 20 illustrates the dynamic voltage scaling through the entry and exit of burst mode. The output voltage immediately exits standby mode, increasing to 12 V, when the BMT is exceeded. It then drops to the 9.75 V standby output voltage level when the load falls below the BMT. This behavior is due to the circuit explained in Section 10.2.

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Figure 19. 300 mA to 15 A Transient (Ch2 = V

Figure 20. 10 mA to 15 A Transient (Ch2 = V

AC Coupled; Ch4 = I

OUT

DC Coupled; Ch4 = I

OUT

)

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9.11 Loop Response

The following plot shows the loop response with 115 VAC, 60 Hz applied to the AC input and 390 VDC applied to the DC input at full load condition.

Performance Data and Typical Characteristic Curves

Figure 21. Bode Plot at 15 A Load

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Performance Data and Typical Characteristic Curves

9.12 Steady State

The following waveforms show the sampled resonant capacitor voltage (VCR), resonant current, and low side gate voltage (LO) with 115 VAC, 60 Hz applied to the AC input and 390 VDC applied to the DC input.

Figure 22 and Table 7 show the waveforms during burst mode.

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Figure 22. Steady State Waveforms at No Load (Ch2 = VCR; Ch3 = LO; Ch4 = IResonant)

Figure 23. Steady State Waveforms at 15 A Load (Ch2 = VCR; Ch3 = LO; Ch4 = IResonant)

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9.13 X-Capacitor Discharge

The following waveform shows the X-Capacitor discharge after the AC input is disconnected at the peak of a 265 VAC input. 390 VDC is applied to the DC input and the output is unloaded.

Performance Data and Typical Characteristic Curves

Figure 24. X-Cap Discharge (Ch1 = Voltage across X-Cap, C40 and C41)

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Assembly Drawing and List of Materials

10 Assembly Drawing and List of Materials

10.1 Assembly Drawing

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Figure 25. UCC25640EVM-020 Top Layer Assembly Drawing (Top view)

Figure 26. UCC25640EVM-020 Bottom Layer Assembly Drawing (Top view)

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Assembly Drawing and List of Materials

Figure 27. UCC25640EVM-020 Top Copper Assembly Drawing (Top view)

Figure 28. UCC25640EVM-020 Bottom Copper Assembly Drawing (Top view)

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Assembly Drawing and List of Materials

10.2 Standby Mode Circuit for TV Applications

For some applications such as LED or OLED TV, the AC/DC power supply is placed into a standby power mode to meet light load efficiency requirements. In this mode, the output voltage is reduced and the LLC converter is configured to operate in burst mode to minimize input power. A central control circuit communicates with the AC/DC power supply to enter or exit standby mode as needed. In order to mimic this system level behavior, an external standby circuit was added to this design. This external standby circuit adjusts both the burst mode threshold setting and output voltage set point depending on the magnitude of the output current.

This is accomplished by sensing the voltage across a current sense resistor.

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Figure 29. High Side Current Sense in Series with Output

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The resulting voltage is fed to a current sense amplifier with a 200V/V gain. The amplifier output is compared to a set reference voltage to determine when to enter or exit standby mode. Hysteresis is implemented on the comparator using R52 and R48.

Assembly Drawing and List of Materials

Figure 30. External Standby Circuit Current Sense Gain and Comparator

The standby circuit adjusts the output voltage set point by changing the feedback resistor divider ratio through Q6 and R56. When in standby mode, the gate of Q6 is held low. When out of standby mode, Q6 is turned on to put R56 in parallel to R23.

Figure 31. Output Voltage Set Point Adjustment

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Assembly Drawing and List of Materials

The burst mode threshold is controlled by the standby circuit using transistor Q5. When in standby mode, the base of Q5 is pulled low, connecting the top of the LL/SS resistor divider to RVCC. When out of standby mode, Q5 is turned off, changing the burst mode threshold to the minimum burst threshold (0.2V). For applications where the output voltage set point is decreased when in standby mode, it is possible to get in and out of burst mode by changing the output voltage regulation set point. This is because the change in necessary peak to peak voltage on the VCR waveform to regulate at the higher output voltage is greater than the programmed burst threshold. For these applications, the burst threshold adjustment circuit on the primary may not be necessary.

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Figure 32. Burst Mode Threshold Adjustment

Please note that this external standby circuit was added to evaluation module only to mimic system level behavior. This circuit is not required in order to design with UCC25640x.

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10.3 List of Materials

Designator QTY Description Part Number

PCB1 1 Printed Circuit Board HVP020 C1, C17 2 Capacitor, Film, 0.015 uF, 1250 V, +/- 5%, AEC-Q200 Grade

C3, C4, C8, C9 4 Capacitor, aluminum, 470 uF, 35 V, +/- 20%, 0.03 ohm, TH UHW1V471MPD C5, C6, C10, C11 4 Capacitor, ceramic, 22 uF, 25 V, +/- 20%, X5R, 1206_190 C3216X5R1E226M160AB C7 1 Capacitor, aluminum, 68 uF, 450 V, +/- 20%, TH EKXG451ELL680MMN3S C12 1 Capacitor, ceramic, 100 pF, 50 V, +/- 1%, C0G/NP0, 0603 06035A101FAT2A C13 1 Capacitor, ceramic, 68 pF, 1 kV, +/- 5%, C0G/NP0, 1206 CC1206JKNPOCBN680 C14 1 Capacitor, ceramic, 150 pF, 630 V, +/- 5%, C0G/NP0, 1206 GRM31A5C2J151JW01D C15 1 Capacitor, ceramic, 2.2 uF, 35 V, +/- 10%, X7R, 0805 C2012X7R1V225K085AC C16 1 Capacitor, aluminum, 330 uF, 35 V, +/- 20%, TH EKZE350ELL331MJ16S C18 1 Capacitor, ceramic, 10 uF, 35 V, +/- 10%, X7R, 1206 C3216X7R1V106K160AC C20, C24 2 Capacitor, ceramic, 100 pF, 100 V, +/- 5%, C0G/NP0, 1206 12061A101JAT2A C21 1 Capacitor, ceramic, 8200 pF, 50 V, +/- 10%, X7R, 1206 CC1206KRX7R9BB822 C22 1 Capacitor, ceramic, 1000 pF, 440V, +/- 20%, E, D7xT6mm CD45-E2GA102M-NKA C25 1 Capacitor, ceramic, 150 pF, 50 V,+/- 5%, C0G/NP0, 0402 885012005062 C26 1 Capacitor, ceramic, 0.01 uF, 100 V, +/- 5%, X7R, 0603 06031C103JAT2A C27, C28 2 Capacitor, ceramic, 1 uF, 16 V, +/- 10%, X7R, 0603 EMK107B7105KA-T C29 1 Capacitor, ceramic, 2.2 uF, 16 V, +/- 10%, X7R, 1206 C1206C225K4RACTU C30, C31 2 Capacitor, ceramic, 4.7 uF, 25 V, +/- 10%, X7R, 1206 C3216X7R1E475K085AB C32, C33 2 Capacitor, ceramic, 10 pF, 16 V,+/- 10%, C0G, 0402 C0402C100K4GACTU C36 1 Capacitor, ceramic, 0.068 µF, 25 V,+/- 10%, X7R, 0603 885012206070 C37, C45 2 Capacitor, ceramic, 0.1 uF, 16 V, +/- 10%, X5R, 0402 GRM155R61C104KA88D C38 1 Capacitor, ceramic, 47 pF, 500 V, +/- 5%, C0G/NP0, 1206 12067A470JAT2A C39 1 Capacitor, film, 0.47 uF, 630 V, +/- 10%, TH B32922C3474K C40, C41 2 Capacitor, film, 1 µF, X2 275 VAC, +/- 20%, TH R46KN410000P0M C42, C43 2 Capacitor, ceramic, 100 pF, 50 V, +/- 5%, C0G/NP0, 0402 GRM1555C1H101JA01D C44 1 Capacitor, ceramic, 0.1 uF, 25 V, +/- 10%, X5R, 0402 GRM155R61E104KA87D C46 1 Capacitor, ceramic, 4700 pF, 100 V, +/-5%, C0G/NP0, 0603 C0603C472J1GAC7867 D1, D4 2 Diode, Ultrafast, 100 V, 0.15 A, SOD-123 1N4148W-7-F D2, D5 2 Diode, Schottky, 100 V, 20 A, AEC-Q101, TH STPS41H100CTY D3 1 Diode, Schottky, 100 V, 2 A, AEC-Q101, SOD-123W PMEG10020ELRX D7 1 Diode, Ultrafast, 600 V, 1 A, AEC-Q101, SMAF ES1JAF D8, D9 2 Diode, P-N, 1000 V, 1 A, TH 1N4007-E3/73 D10 1 Diode, Switching-Bridge, 420 V, 8 A, TH GBU8J-BP H1, H2, H3, H4 4 4824 H5, H6, H7, H8 4 1903C H9 1 TO-220 Mounting Kit 4880SG H10 1 TO-247 Mounting Kit 4880SG H11, H12 2 531202B02500G J1, J2 2 Terminal Block, 5.08 mm, 2x1, Brass, TH ED120/2DS J8 1 Terminal Block, 5.08 mm, 3x1, Brass, TH ED120/3DS Q1, Q3 2 MOSFET, N-CH, 600 V, 20 A, DDPAK AOB20S60L Q5 1 Transistor, PNP, 65 V, 0.1 A, SOT-23 BC856B-7-F Q6 1 MOSFET, N-CH, 60 V, 0.3 A, SOT-23 2N7002K-T1-E3 R1, R6 2 Resistor, 42.2, 1%, 0.1 W, 0603 RC0603FR-0742R2L

Assembly Drawing and List of Materials

Table 9. List of Materials

B32652A7153J000

3, TH

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UCC25640EVM-020 Evaluation Module

Assembly Drawing and List of Materials

Designator QTY Description Part Number

R3, R8 2 Resistor, 1.00, 1%, 0.1 W, 0603 RC0603FR-071RL R4, R11 2 Resistor, 51.0 k, 1%, 0.1 W, 0603 RC0603FR-0751KL R5 1 Resistor, 0, 5%, 0.25 W, 1206 ERJ-8GEY0R00V R9, R12 2 Resistor, 0.005, 1%, 1.5 W, 2010 CSNL2010FT5L00 R10 1 Resistor, 30.9 k, 1%, 0.1 W, 0603 RC0603FR-0730K9L R13 1 Resistor, 5.36 k, 1%, 0.1 W, 0603 RC0603FR-075K36L R14 1 Resistor, 133, 1%, 0.25 W, 1206 RC1206FR-07133RL R15, R21 2 Resistor, 0, 5%, 0.063 W, 0402 RC0402JR-070RL R16 1 Resistor, 2.05 k, 1%, 0.1 W, 0603 RC0603FR-072K05L R17 1 Resistor, 0, 0.75 W, AEC-Q200 Grade 0, 1206 CRCW12060000Z0EAHP R18 1 Resistor, 9.09 k, 1%, 0.1 W, 0603 RC0603FR-079K09L R19 1 Resistor, 147 k, 1%, 0.1 W, 0603 RC0603FR-07147KL R22 1 Resistor, 33.2 k, 1%, 0.1 W, 0603 RC0603FR-0733K2L R23 1 Resistor, 21.5 k, 1%, 0.1 W, 0603 RC0603FR-0721K5L R24, R33 1 Resistor, 0, 5%, 0.1 W, 0603 RC0603JR-070RL R25 1 Resistor, 2.20, 1%, 0.1 W, 0603 ERJ-3RQF2R2V R26, R27, R28 3 Resistor, 1.65 k, 1%, 0.25 W, AEC-Q200 Grade 0, 1206 CRCW12061K65FKEA R29, R30, R34 3 Resistor, 4.99 M, 1%, 0.25 W, AEC-Q200 Grade 0, 1206 CRCW12064M99FKEA R36 1 Resistor, 549k, 1%, 0.125 W, AEC-Q200 Grade 0, 0805 ERJ-6ENF5493V R37 1 Resistor, 41.2 k, 1%, 0.1 W, 0603 RC0603FR-0741K2L R38 1 Resistor, 316k, 1%, 0.1 W, 0603 RC0603FR-07316KL R39, R40, R45, R49 4 Resistor, 10 M, 5%, 0.25 W, AEC-Q200 Grade 0, 1206 CRCW120610M0JNEA R41, R42 2 Resistor, 4.75, 1%, 0.063 W, AEC-Q200 Grade 0, 0402 CRCW04024R75FKED R43, R47 3 Resistor, 10.0 k, 1%, 0.1 W, 0603 RC0603FR-0710KL R44 1 Resistor, 100 k, 1%, 0.1 W, 0402 ERJ-2RKF1003X R48 1 Resistor, 5.11 k, 1%, 0.063 W, 0402 CRCW04025K11FKED R50 1 Resistor, 3.01 k, 1%, 0.063 W, 0402 CRCW04023K01FKED R52 1 Resistor, 261 k, 1%, 0.063 W, 0402 CRCW0402261KFKED R56 1 Resistor, 80.6 k, 1%, 0.1 W, 0603 RC0603FR-0780K6L R57 1 Resistor, 1.21 k, 1%, 0.1 W, 0603 RC0603FR-071K21L RT1 1 Thermistor NTC, 4.70 ohm, 20%, 15x7mm B57237S0479M000 RV1 1 VARISTOR 1200V 10KA DISC 20MM TMOV20RP750E T1 1 Transformer, 510 uH, TH 750344018 T2, T3 2 Terminal 50A Lug CB35-36-CY TP1, TP6, TP10,

TP15 TP2, TP5, TP7,

TP12, TP13, TP14, TP16, TP17, TP18, TP19, TP20, TP21, TP22

TP3, TP4, TP8, TP9 4 Test Point, Multipurpose, Black, TH 5011 TP11 1 Test Point, Multipurpose, Orange, TH 5013 U1, U8 2 Optocoupler, 5.3 kV, 50-600% CTR, TH VO618A U2 1 Low-Voltage Adjustable Precision Shunt Regulator, 129 ppm /

U3 1 Single Output LDO, 50 mA, Fixed 5 V Output, 3 to 24 V Input,

4 Test Point, Multipurpose, Red, TH 5010

13 Test Point, Multipurpose, White, TH 5012

www.ti.com

Table 9. List of Materials (continued)

TLVH431ACDBZR degC, 80 mA, 0 to 70 degC, 3-pin SOT-23 (DBZ), Green (RoHS & no Sb/Br)

TPS71550DCKR 5-pin SC70 (DCK), -40 to 85 degC, Green (RoHS & no Sb/Br)

UCC25640EVM-020 Evaluation Module

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Revision History

Table 9. List of Materials (continued)

Designator QTY Description Part Number

U4 1 Wide Vin LLC Resonant Controller With High-Voltage Start

Up Enabling Low Standby Power, DDB0014A (SOIC-14)

U6 1 Single General Purpose, Low Voltage, Tiny Pack Comparator,

5-pin SOT-23, Pb-Free

U7 1 Low- and High-Side Measurement, Multichannel, Voltage

Output, Current-Sense Amplifier, DBV0005A (SOT-5)

UCC25640-4DDBR

LMV331M5/NOPB

INA180A4IDBV

Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from A Revision (August 2019) to B Revision ................................................................................................ Page

• Added component list to support UCC256402 ........................................................................................ 5

• Changed component list to support UCC256403..................................................................................... 5

• Changed component list to support UCC24624....................................................................................... 6

• Changed schematic diagram ............................................................................................................ 8

• Changed Efficiency vs Output Current graph........................................................................................ 16

• Changed Load Regulation vs Output Current graph................................................................................ 17

• Changed Switching Frequency vs Output Current graph .......................................................................... 17

• Changed No load startup and full load startup waveforms......................................................................... 19

• Added Top and bottom thermal images .............................................................................................. 20

• Changed No load output voltage ripple and full load output voltage ripple waveforms ........................................ 21

• Changed Transient response waveforms ............................................................................................ 22

• Changed Loop response measurement .............................................................................................. 23

• Changed No load steady state and full load steady state waveforms ............................................................ 24

• Changed PCB layer and assembly drawings ........................................................................................ 26

• Changed Bill of Materials ............................................................................................................... 31

Changes from Original (June 2019) to A Revision ......................................................................................................... Page

• Changed text to remove typos throughout the document............................................................................ 4

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Revision History

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.

2 Limited 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.

3 Regulatory 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.

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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.

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3.3 Japan

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

3.3.1 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.

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4 EVM 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.

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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

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TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS.

These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource. Other reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages, costs, losses, and liabilities arising out of your use of these resources.

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warranties or warranty disclaimers for TI products.

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Texas instruments UCC25640EVM-020 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual