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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.

Содержание TPS51220A EVM-476

Страница 1: ...EVM 476 Recommended Test Setup 6 Figure 5 2 Recommended Tip and Barrel Technique to Measure Output Ripple Voltage 6 Figure 7 1 Efficiency 12 VIN 5 0 V Output 11 Figure 7 2 Efficiency 12 VIN 3 3 V Out...

Страница 2: ...L2 jumpers JP1 and JP4 Selections 9 Table 6 2 FUNC jumper JP2 Selections 10 Table 6 3 TRIP JP3 Selections 10 Table 9 1 EVM Components List According to Schematic Shown in Figure 4 1 21 Trademarks All...

Страница 3: ...2 Features Input range from 8 V to 20 V Dual 8 A outputs 3 3 V and 5 V Individual enable function for 3 3 V and 5 V output Selectable light load operation Selectable control architecture Inductor curr...

Страница 4: ...DITIONS MIN TYP MAX UNITS Peak efficiency 96 Full load efficiency 95 Electrical Performance Specifications www ti com 4 TPS51220A Buck Controller Evaluation Module User s Guide SLUU381B SEPTEMBER 2009...

Страница 5: ...PS51220A EVM 476 Schematic www ti com Schematic SLUU381B SEPTEMBER 2009 REVISED FEBRUARY 2022 Submit Document Feedback TPS51220A Buck Controller Evaluation Module User s Guide 5 Copyright 2022 Texas I...

Страница 6: ...some of the test points Fan A fan is not required when testing the EVM Recommended Wire Gauge Both loads and input should be connected using a minimum gauge wire of AWG 16 Also these connections shoul...

Страница 7: ...will be high when output is enabled via switch S1 TP11 EN2 Output 2 enable signal will be high when output is enabled via switch S2 TP12 PG1 Output 1 power good signal will be high when output is in r...

Страница 8: ...sure VREF2 TP15 voltage using V6 it should read 1 98 V to 2 02 V 6 Make sure electronic load 1 is set to sink 0 A Set S1 EN1 to ON position S3 remains in ON position 7 Record VOUT1 voltage using V1 IO...

Страница 9: ...rs JP1 and JP4 Selections JUMPER LOCATION MODE DESCRIPTION CCM 1 and 2 shorted CCM EVM remains in continuous current mode AS 3 and 4 shorted default Auto skip EVM enters auto skip mode at light load a...

Страница 10: ...plied to the EVM 2 The TRIP jumper JP3 allows the user to select the voltage level used by the EVM to implement current limit It also enables or disables the output discharge function Table 6 3 descri...

Страница 11: ...on 0 3 6 9 ILOAD Load Current A 4 95 4 97 4 99 5 01 5 03 5 05 4 96 4 98 5 00 5 02 5 04 V OUT Output Voltage V 8 7 5 4 2 1 AUTOSKIP OOA CCM Figure 7 3 12 VIN 5 0 V Load Regulation 0 3 6 9 ILOAD Load Cu...

Страница 12: ...0 90 135 45 Phase o Gain Phase Figure 7 6 CCM mode 3 3 V Loop Response Gain and Phase fCO 90 kHz PM 63 7 4 Transient Response Figure 7 7 5 V CCM Mode Load Transient Figure 7 8 5 V D CAP Mode Load Tran...

Страница 13: ...de Output Ripple 7 6 Turn On Waveform Figure 7 11 Enable Turn On Waveform www ti com Performance Data and Typical Characteristic Curves SLUU381B SEPTEMBER 2009 REVISED FEBRUARY 2022 Submit Document Fe...

Страница 14: ...3 Enable Turn Off Without Discharge Waveform Performance Data and Typical Characteristic Curves www ti com 14 TPS51220A Buck Controller Evaluation Module User s Guide SLUU381B SEPTEMBER 2009 REVISED F...

Страница 15: ...uses four layers of copper The two internal layers are 2 oz copper while the external layers are 1 oz copper Figure 8 1 Top Layer Assembly Drawing Top View www ti com EVM Assembly Drawing and PCB Layo...

Страница 16: ...Top View EVM Assembly Drawing and PCB Layout www ti com 16 TPS51220A Buck Controller Evaluation Module User s Guide SLUU381B SEPTEMBER 2009 REVISED FEBRUARY 2022 Submit Document Feedback Copyright 20...

Страница 17: ...iew www ti com EVM Assembly Drawing and PCB Layout SLUU381B SEPTEMBER 2009 REVISED FEBRUARY 2022 Submit Document Feedback TPS51220A Buck Controller Evaluation Module User s Guide 17 Copyright 2022 Tex...

Страница 18: ...p View EVM Assembly Drawing and PCB Layout www ti com 18 TPS51220A Buck Controller Evaluation Module User s Guide SLUU381B SEPTEMBER 2009 REVISED FEBRUARY 2022 Submit Document Feedback Copyright 2022...

Страница 19: ...p View www ti com EVM Assembly Drawing and PCB Layout SLUU381B SEPTEMBER 2009 REVISED FEBRUARY 2022 Submit Document Feedback TPS51220A Buck Controller Evaluation Module User s Guide 19 Copyright 2022...

Страница 20: ...View EVM Assembly Drawing and PCB Layout www ti com 20 TPS51220A Buck Controller Evaluation Module User s Guide SLUU381B SEPTEMBER 2009 REVISED FEBRUARY 2022 Submit Document Feedback Copyright 2022 Te...

Страница 21: ...W 5 0603 Std Std 1 R20 Resistor chip 300 k 1 16 W 1 0603 Std Std 1 R21 Resistor chip 8 20 k 1 16 W 1 0603 Std Std 1 R22 Resistor chip 7 50 k 1 16 W 1 0603 Std Std 2 R24 R25 Resistor chip 5 60 k 1 16...

Страница 22: ...ther 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 tec...

Страница 23: ...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 in...

Страница 24: ...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 s...

Страница 25: ...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 electr...

Страница 26: ...R 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 Furthe...

Страница 27: ...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 thes...

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