Texas Instruments TPS7B4255EVM-062 Скачать руководство пользователя страница 18

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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 TPS7B4255EVM-062

Страница 1: ...4255 Q1 low dropout linear regulator LDO Included in this user s guide are setup and operating instructions thermal and layout guidelines a printed circuit board PCB layout a schematic diagram and a b...

Страница 2: ...3 3 TPS7B4255EVM 062 Load Transient Results 50 A to 70 mA Load Step 9 Figure 3 4 TPS7B4255EVM 062 Load Transient Results 70 mA to 50 A Load Step 9 Figure 4 1 Top Assembly Layer and Silkscreen 10 Figu...

Страница 3: ...hat are connected to the main power supply The following warnings are noted for the safety of anyone using or working close to the TPS7B4255EVM 062 Observe all safety precautions WARNING Failure to ad...

Страница 4: ...5QDYBRQ1 U1 100V 1uF C2 DNP 100V 1 F C5 DNP 50V 1uF C9 DNP VO 1 FB NC 2 GND 4 GND 5 GND 6 GND 3 VI 8 EN 7 PAD 9 TPS7B8401QWDRBRQ1 U2 VIN TP2 GND 1 2 3 4 5 6 J14 8V 17 8k R6 30 0k R7 48 7k R8 5V 3 3V G...

Страница 5: ...e connection and the GND terminal is the negative that is ground connection 3 1 3 EN EN is a 3 pin header used to enable or disable the TPS7B84 Q1 which in turn enables the TPS7B4255 Q1 The center pin...

Страница 6: ...n example as illustrated by the white boxes in Figure 3 2 The prepopulated capacitors are sized to ensure the minimum capacitance requirements are maintained under all normal operating conditions Opti...

Страница 7: ...board layout is designed such that the Iin current probe slot does not detect any current that goes to the TPS7B84 Q1 circuit or its peripherals during start up or during any other operational mode T...

Страница 8: ...per in the current path can reduce this ringing 10 AWG wire can be used as needed If ringing persists install damping networks by adding a series resistor and capacitor in parallel with VIN Locations...

Страница 9: ...rated in Figure 3 3 and Figure 3 4 the TPS7B4255 Q1 transient response is very fast and the output voltage recovers in well under 1 ms after the initial load transient Use a pulse duration limit of 1...

Страница 10: ...most at risk of raising the junction temperature during normal operation The LDO may become hot to the touch during normal operation see the thermal impedance discussion in the TPS7B4255 Q1 data sheet...

Страница 11: ...rnal Layer 4 Figure 4 7 Bottom Layer Routing Figure 4 8 Bottom Assembly Layer and Silkscreen www ti com Board Layout SLVUCA5 JUNE 2022 Submit Document Feedback TPS7B4255EVM 062 Evaluation Module 11 Co...

Страница 12: ...J21 3 SMA Straight Jack Gold 50 Ohm TH SMA Straight Jack TH 901 144 8RFX Amphenol RF J3 J4 J20 3 Standard Banana Jack insulated 10A red 571 0500 571 0500 DEM Manufacturing J5 J11 2 Header 100mil 2x1...

Страница 13: ...omotive T R 0805 CGA4J1X7R1H475 K125AC TDK Corporation C2 C3 C6 0 1uF CAP CERM 1 uF 100 V 10 X7R 1206 1206 C3216X7R2A105K1 60AA TDK C5 0 1uF CAP CERM 1 F 100 V 10 X7R AEC Q200 Grade 1 0805 0805 08051C...

Страница 14: ...5 0805 RL1220S 1R0 F Susumu Co Ltd R5 R17 0 1 00k RES 1 00 k 1 0 125 W AEC Q200 Grade 0 0805 0805 ERJ 6ENF1001V Panasonic R9 R10 R11 R12 R13 0 154 RES 154 1 0 5 W 1210 1210 RC1210FR 07154R L Yageo R14...

Страница 15: ...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 16: ...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 17: ...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 18: ...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 19: ...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 20: ...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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