Texas Instruments TPS54320 Скачать руководство пользователя страница 19

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4

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 TPS54320

Страница 1: ... TPS54320 Line Regulation 6 Figure 2 5 TPS54320 Transient Response 7 Figure 2 6 TPS54320 Loop Response 7 Figure 2 7 TPS54320 Output Ripple 8 Figure 2 8 TPS54320 Input Ripple 8 Figure 2 9 TPS54320 Start Up Relative to VIN 9 Figure 2 10 TPS54320 Start Up Relative to Enable 9 Figure 2 11 TPS54320 Thermal Image 10 Figure 3 1 TPS54320 Top Side Layout 11 Figure 3 2 TPS54320 Bottom Side Layout 12 Figure ...

Страница 2: ...le slow start tracking and undervoltage lockout inputs The absolute maximum input voltage is 20 V for the TPS54320 Table 1 1 Input Voltage and Output Current Summary EVM Input Voltage Range Output Current Range TPS54320 VIN 8 V to 17 V VIN start voltage 6 806 V 0 A to 3 A 1 2 Performance Specification Summary A summary of the TPS54320 performance specifications is provided in Table 1 2 Specificati...

Страница 3: ...e can be adjusted by changing the value of C7 Use Equation 2 to calculate the required value of C7 for a desired slow start time Tss ms Iss A C7 nF Vref V m 2 The EVM is set for a slow start time of 3 5 msec using C7 0 01 μF 1 3 3 Track In The TPS54320 can track an external voltage during start up The J5 connector is provided to allow connection to that external voltage Ratio metric or simultaneou...

Страница 4: ...current capability must be 3 A Wire lengths must be minimized to reduce losses in the wires Test point TP1 provides a place to monitor the VIN input voltages with TP2 providing a convenient ground reference TP8 is used to monitor the output voltage with TP9 as the ground reference Table 2 1 EVM Connectors and Test Points Reference Designator Function J1 PVIN input voltage connector see Table 1 1 f...

Страница 5: ...54320 at lower output currents below 0 20 A at an ambient temperature of 25 C 0 20 40 60 80 100 120 140 160 180 200 0 10 20 30 40 50 60 70 80 90 100 Efficiency I Output Current mA O V 17 V I V 8 V I V 15 V I V 10 V I V 12 V I Figure 2 2 TPS54320 Low Current Efficiency The efficiency may be lower at higher ambient temperatures due to temperature variation in the drain to source resistance of the in...

Страница 6: ...en for an ambient temperature of 25 C 2 4 Output Voltage Line Regulation Figure 2 4 shows the line regulation for the TPS54320 8 10 12 14 16 V Input Voltage V I 0 05 0 04 0 03 0 02 0 01 0 0 01 0 02 0 03 0 04 0 05 Percent Deviation I 0 A O I 1 5 A O I 3 A O Figure 2 4 TPS54320 Line Regulation Test Setup and Results www ti com 6 TPS54320 Step Down Converter Evaluation Module User s Guide SLVU380A SE...

Страница 7: ...ponse 2 6 Loop Characteristics Figure 2 6 shows the TPS54320 loop response characteristics Gain and phase plots are shown for VIN of 12 V Load current for the measurement is 3 A 60 50 40 30 20 10 0 10 20 30 40 50 60 100 1k 10k 100k 1M f Frequency Hz 180 150 120 90 60 30 0 30 60 90 120 150 180 Phase Gain Gain dB Phase deg Figure 2 6 TPS54320 Loop Response www ti com Test Setup and Results SLVU380A ...

Страница 8: ... Inductor current 1 A div PH 10 V div Figure 2 7 TPS54320 Output Ripple 2 8 Input Voltage Ripple Figure 2 8 shows the TPS54320 input voltage The output current is the rated full load of 3 A and VIN 12 V The ripple voltage is measured directly across the input capacitors V 200 mV div AC coupled IN Inductor current 1 A div PH 10 V div t Time 1 s div m Figure 2 8 TPS54320 Input Ripple Test Setup and ...

Страница 9: ...he enable threshold voltage the start up sequence begins and the output voltage ramps up to the externally set value of 3 3 V The input voltage for these plots is 12 V and the load is 1 1Ω V 10 V div IN EN 2 V div SS TR 1 V div V 2 V div OUT t Time 2 ms div Figure 2 9 TPS54320 Start Up Relative to VIN V 10 V div IN EN 2 V div SS TR 1 V div V 2 V div OUT t Time 2 ms div Figure 2 10 TPS54320 Start U...

Страница 10: ...e peak temperature of the IC 59 5 C is well below the maximum recommended operating condition listed in the data sheet of 150 C Figure 2 11 TPS54320 Thermal Image Test Setup and Results www ti com 10 TPS54320 Step Down Converter Evaluation Module User s Guide SLVU380A SEPTEMBER 2010 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 11: ...e ground plane to the bottom side ground plane The input decoupling capacitors C2 and C3 and bootstrap capacitor C5 are all located as close to the IC as possible In addition the voltage set point resistor divider components are also kept close to the IC The voltage divider network ties to the output voltage at the point of regulation the copper VOUT trace at the J3 output connector For the TPS543...

Страница 12: ...Bottom Side Layout Board Layout www ti com 12 TPS54320 Step Down Converter Evaluation Module User s Guide SLVU380A SEPTEMBER 2010 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 13: ... the components used in this design is 0 35 in2 227 mm2 This area does not include test point or connectors www ti com Board Layout SLVU380A SEPTEMBER 2010 REVISED OCTOBER 2021 Submit Document Feedback TPS54320 Step Down Converter Evaluation Module User s Guide 13 Copyright 2021 Texas Instruments Incorporated ...

Страница 14: ...ematic Figure 4 1 is the schematic for the TPS54320 Figure 4 1 TPS54320EVM 513 Schematic Schematic and Bill of Materials www ti com 14 TPS54320 Step Down Converter Evaluation Module User s Guide SLVU380A SEPTEMBER 2010 REVISED OCTOBER 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 15: ... R2 R3 100KΩ Resistor Chip 1 16W 1 0603 Std Std 1 R4 1 78KΩ Resistor Chip 1 16W 1 0603 Std Std 1 R7 51 1Ω Resistor Chip 1 16W 1 0603 Std Std 1 R8 31 6KΩ Resistor Chip 1 16W 1 0603 Std Std 1 R9 10 0KΩ Resistor Chip 1 16W 1 0603 Std Std 1 U1 TPS54320RHL IC 17V Input 3A Output Sync Step Down Switcher with Integrated FET QFN14 TPS54320RHL TI 5 Revision History NOTE Page numbers for previous revisions ...

Страница 16: ...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...

Страница 17: ... 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...

Страница 18: ...y 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 R...

Страница 19: ... 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...

Страница 20: ...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...

Страница 21: ...o 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 indemn...

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