Texas Instruments LM7480-Q1 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 LM7480-Q1

Страница 1: ...th power path ON OFF control and overvoltage protection This evaluation module demonstrates how LM74800 Q1 along with two back to back N Channel MOSFETs configured in common source topology can provide 200 V unsuppressed load dump protection with reverse battery protection to the downstream circuit The first gate drive HGATE controls an external N channel MOSFET to turn off or clamp output voltage...

Страница 2: ... Q1 Q3 and Q2 Q1 and Q2 are 200 V and 60 V rated N Channel MOSFETs respectively which are capable of supporting 2 A load current for automotive applications Since the MOSFETs are connected back to back in common source topology they can support 200 V unsuppressed load dump protection reverse battery protection reverse current blocking and can provide power path cut off when disabled or during over...

Страница 3: ...m the EVM VA Common source point of Q1 and Q2 MOSFETs and A pin of LM7480x Q1 DGATE Output of Ideal Diode MOSFET Gate Control HGATE Output of Hot Swap MOSFET Gate Control GND1 GND 2 GND3 and GND4 Test Point for EVM Ground Table 2 3 Jumpers and LED Description Jumpers Description J5 EN UVLO Control 1 2 Enables by connecting to VIN 2 3 Disables by connecting to GND J6 OVP Setting 1 2 OVP set to Outp...

Страница 4: ...1 2 D5 12k R5 1 2 3 J6 VIN VOUT GND4 TP10 5 4 1 2 3 Q2 1 3 2 200V Q1 33V D1 150V D2 1µF C2 47k R8 56k R3 GND1 TP7 0 015uF C10 D6 VIN TP1 100 R2 10nF C4 GND2 TP8 47uF C8 DGATE TP4 HGATE TP3 VS TP5 VA TP6 NT1 Unsuppressed Load Dump 200V 56V D4 10k R7 DNP VIN VOUT 1 3 2 Q3 DNP 10k R1 0 R9 1µF 50V C1 70V D3 DNP Figure 3 1 LM74800EVM CS Schematic Schematic www ti com 4 LM7480 Q1 Evaluation Module for U...

Страница 5: ...ve load or equivalent which can tolerate up to 10 A DC load at 12 V 5 Test Setup and Results This sections describes the test procedure for LM74800 Q1 device Similar procedure applies for LM74801 Q1 device also Default jumper setting for LM74800EVM CS board is shown in Figure 5 1 Table 5 1 Default Jumper Setting for LM74800EVM CS J5 J6 J7 1 2 or connect 2 to external enable control 2 3 OVP to Inpu...

Страница 6: ...wer Up To verify the startup behavior connect the oscilloscope to the evaluation module Channel 1 Input Voltage Test Point Label VIN Channel 2 A pin Voltage Test Point Label VA Channel 3 DGATE Voltage Test Point Label DGATE Channel 4 HGATE Voltage Test Point Label HGATE Set the load to 200 mA trigger to Channel 1 rising and turn ON the power supply Start up behavior of LM74800EVM CS is captured in...

Страница 7: ...TE 5 3 200 V Unsuppressed Load Dump Protection Figure 5 6 Unsuppressed Load Dump 200 V Output Clamp Figure 5 7 Unsuppressed Load Dump 200 V Output Cut off www ti com Test Setup and Results SLVUBU4 MARCH 2021 Submit Document Feedback LM7480 Q1 Evaluation Module for Unsuppressed Load Dump Protection LM74800EVM CS 7 Copyright 2021 Texas Instruments Incorporated ...

Страница 8: ...e 5 8 ISO 7637 2 Pulse 1 600 V 50 Ω Test Setup and Results www ti com 8 LM7480 Q1 Evaluation Module for Unsuppressed Load Dump Protection LM74800EVM CS SLVUBU4 MARCH 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 9: ...OP Figure 6 2 Component Placement BOTTOM Figure 6 3 TOP Layer Routing www ti com Board Layout and Bill of Materials SLVUBU4 MARCH 2021 Submit Document Feedback LM7480 Q1 Evaluation Module for Unsuppressed Load Dump Protection LM74800EVM CS 9 Copyright 2021 Texas Instruments Incorporated ...

Страница 10: ...Routing Board Layout and Bill of Materials www ti com 10 LM7480 Q1 Evaluation Module for Unsuppressed Load Dump Protection LM74800EVM CS SLVUBU4 MARCH 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 11: ...1 60AA TDK C8 1 47 uF CAP AL 47 uF 63 V 20 0 65 ohm AEC Q200 Grade 2 SMD SMT Radial F EEE FK1J470P Panasonic C10 1 0 015 uF CAP CERM 0 015 uF 100 V 10 X7R AEC Q200 Grade 1 0603 0603 CGA3E2X7R2A153K0 80AA TDK D1 1 33 V Diode TVS Bi 33 V SMB SMB SMBJ33CA 13 F Diodes Inc D2 1 150 V Diode TVS Uni 150 V 243 Vc SMB SMB SMBJ150A 13 F Diodes Inc D4 1 56 V Diode Zener 56 V 500 mW AEC Q101 SOD 123 SOD 123 M...

Страница 12: ... SOT669 BUK7Y4R8 60EX Nexperia None R1 1 10 k RES 10 k 5 0 25 W AEC Q200 Grade 0 1206 1206 CRCW120610K0JNE A Vishay Dale R2 1 100 RES 100 5 0 1 W AEC Q200 Grade 0 0603 0603 CRCW0603100RJNE A Vishay Dale R3 1 56 k RES 56 k 5 0 1 W AEC Q200 Grade 0 0603 0603 CRCW060356K0JNE A Vishay Dale R4 1 3 48 k RES 3 48 k 1 0 1 W AEC Q200 Grade 0 0603 0603 CRCW06033K48FKE A Vishay Dale R5 1 12 k RES 12 k 5 0 1 ...

Страница 13: ...ystone U1 1 Ideal Diode Controller with Load Dump Protection DRR0012E WSON 12 DRR0012E PLM74800DRRRQ1 Texas Instruments Texas Instruments D3 0 70 V Diode Schottky 70 V 1 A SMA SMA B170 13 F Diodes Inc FID1 FID2 FID3 FID4 FID5 FID6 0 Fiducial mark There is nothing to buy or mount N A N A N A Q3 0 150 V MOSFET N CH 150 V 33 A AEC Q101 DPAK DPAK AUIRFR4615TRL International Rectifier None R7 0 10 k RE...

Страница 14: ... numbers in the current version DATE REVISION NOTES March 2021 Initial release Revision History www ti com 14 LM7480 Q1 Evaluation Module for Unsuppressed Load Dump Protection LM74800EVM CS SLVUBU4 MARCH 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 15: ...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 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 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 17: ...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 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 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 19: ...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 20: ...s 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 wi...

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