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4 EVM Board Assembly Drawings and Layout Guidelines

4.1 PCB Drawings

through

show component placement and layout of this EVM.

Figure 4-1. LM74700DDFEVM Top Side Placement

Figure 4-2. LM74700DDFEVM Bottom Side Placement

EVM Board Assembly Drawings and Layout Guidelines

SNOU177 – DECEMBER 2020

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LM74700DDFEVM: Evaluation Module for LM74700-Q1

7

Copyright © 2020 Texas Instruments Incorporated

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Содержание LM74700- Q1

Страница 1: ...gs 7 4 2 Bill of Materials 9 List of Figures Figure 2 1 LM74700DDFEVM Typical Application Circuit 2 Figure 2 2 LM74700DDFEVM 3 Figure 2 3 LM74700DDFEVM Schematic 4 Figure 3 1 Reverse Polarity 12 V to 12 V 5 Figure 3 2 Startup Reverse Polarity 12 V 5 Figure 3 3 ORing Application Higher Supply Switchover 6 Figure 3 4 ORing Application 12 V Lower Supply Test 6 Figure 4 1 LM74700DDFEVM Top Side Placem...

Страница 2: ...1 Low IQ reverse battery protection ideal diode controller 2 Setup This section describes the jumpers and connectors on the EVM and how to properly connect setup and use the LM74700DDFEVM Ensure the power supply is turned off while making connections on the board 2 1 I O Connector Description VIN J1 Power input connector to the positive rail of the input power supply GND1 J3 Ground connection for ...

Страница 3: ...ducted with 3 A constant current as the load and 12 V at the input Make sure that the external power supply source for the input voltage is capable of providing enough current to the output load so that the output voltage can be obtained When all connections to the LM74700DDFEVM are verified apply power to VIN Figure 2 2 captures EVM board setup Figure 2 2 LM74700DDFEVM www ti com Setup SNOU177 DE...

Страница 4: ...3 illustrates the EVM schematic Figure 2 3 LM74700DDFEVM Schematic Setup www ti com 4 LM74700DDFEVM Evaluation Module for LM74700 Q1 SNOU177 DECEMBER 2020 Submit Document Feedback Copyright 2020 Texas Instruments Incorporated ...

Страница 5: ...down The output slowly decays due to the large output capacitors and increased time constant Figure 3 1 Reverse Polarity 12 V to 12 V A 12 V source is connected to the VIN input of the LM74700DDFEVM Figure 3 2 shows that the output voltage remains at a constant 0 V in this situation This test simulates the event of connecting a 12 V battery in the reverse direction therefore protecting the load fr...

Страница 6: ...ws the 15 V source at EVM1 is turned off for a period of time and the output CH2 drops to 12 V source from EVM2 When the 15 V source is turned on again the output rises to 15 V from EVM1 CH1 shows the input to EVM1 CH2 shows the output and CH3 shows input of EVM2 Figure 3 3 ORing Application Higher Supply Switchover Next the 12 V source at EVM2 is turned off for a period of time and turned on agai...

Страница 7: ...ment and layout of this EVM Figure 4 1 LM74700DDFEVM Top Side Placement Figure 4 2 LM74700DDFEVM Bottom Side Placement www ti com EVM Board Assembly Drawings and Layout Guidelines SNOU177 DECEMBER 2020 Submit Document Feedback LM74700DDFEVM Evaluation Module for LM74700 Q1 7 Copyright 2020 Texas Instruments Incorporated ...

Страница 8: ...gure 4 4 LM74700DDFEVM Bottom Layer Routing EVM Board Assembly Drawings and Layout Guidelines www ti com 8 LM74700DDFEVM Evaluation Module for LM74700 Q1 SNOU177 DECEMBER 2020 Submit Document Feedback Copyright 2020 Texas Instruments Incorporated ...

Страница 9: ...PMS 440 0025 PH 4 B F Fastener Supply Screw Fitted Standoff Hex 0 5 L 4 40 Nylon H5 H6 H7 H8 1902C 4 Keystone Standoff Fitted Standard Banana Jack Uninsulated 8 9mm J1 J2 J3 J4 575 8 4 Keystone Keystone575 8 Fitted MOSFET N CH 60 V 15 A AEC Q101 8 PowerVDFN Q1 DMT6007LFG 13 1 Diodes Inc 8 PowerVDFN 60 V Fitted RES 0 5 0 1 W AEC Q200 Grade 0 0603 R1 CRCW06030000Z0EA 1 Vishay Dale 0603 0 Fitted IC I...

Страница 10: ...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 11: ... 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 12: ...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 13: ... 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 14: ...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 15: ...se 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...

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