Texas Instruments LM76005QEVM User Manual Download Page 6 | Manualshive

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Figure 4-2. Top Layer Routing

Board Layout

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LM76005QEVM User’s Guide

SNVU694A – FEBRUARY 2020 – REVISED JULY 2020

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Copyright © 2020 Texas Instruments Incorporated

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Summary of Contents for LM76005QEVM

Page 1: ...utdown The LM76005QEVM is configured for an output voltage of 3 3 V and a switching frequency of 400 kHz Refer to the LM76005 Q1 3 5 V to 60 V 5 A Synchronous Step Down Voltage Regulator Data Sheet for additional features detailed description and available options The EVM contains one DC DC converter see Table 1 1 Table 1 1 Device and Package Configurations CONVERTER IC PACKAGE U1 LM76005 Q1 RNP W...

Page 2: ...r conducted EMI EMC measurement The L1 and CBULK component pads are located on the bottom side of the EVM Refer to Figure 3 1 for initial suggestion of component values J6 and LC filter are not populated on this EVM GND Terminal on J1 J2 and J6 The ground reference for the converter EN Testpoint Used to enable the converter by supplying a voltage greater than 1 2 V typ or just to monitor the volta...

Page 3: ...m load current of 5 A for LM76005 Q1 Note Please remove R3 and tie BIAS pin to ground if output voltage is set higher than 24 V 2 3 Operation For proper operation of the LM76005 Q1 VIN GND and VOUT must be properly configured as stated above In this configuration the device starts up when power is applied and the output voltage of the regulator VOUT comes up to the proper value The default setting...

Page 4: ... Schematic Figure 3 1 LM76005QEVM Schematic Schematic www ti com 4 LM76005QEVM User s Guide SNVU694A FEBRUARY 2020 REVISED JULY 2020 Submit Document Feedback Copyright 2020 Texas Instruments Incorporated ...

Page 5: ...optimal thermal performance The PCB consists of a 4 layer design There are 2 oz copper planes on the top and bottom and 1 oz copper mid layer planes to dissipate heat with an array of thermal vias under the thermal pad to connect to all four layers Test points have been provided for ease of use to connect the power supply and required load and monitor critical signals Figure 4 1 Top Silkscreen Lay...

Page 6: ...Figure 4 2 Top Layer Routing Board Layout www ti com 6 LM76005QEVM User s Guide SNVU694A FEBRUARY 2020 REVISED JULY 2020 Submit Document Feedback Copyright 2020 Texas Instruments Incorporated ...

Page 7: ...Figure 4 3 Mid Layer 1 Ground Plane www ti com Board Layout SNVU694A FEBRUARY 2020 REVISED JULY 2020 Submit Document Feedback LM76005QEVM User s Guide 7 Copyright 2020 Texas Instruments Incorporated ...

Page 8: ...Figure 4 4 Mid Layer 2 Routing Board Layout www ti com 8 LM76005QEVM User s Guide SNVU694A FEBRUARY 2020 REVISED JULY 2020 Submit Document Feedback Copyright 2020 Texas Instruments Incorporated ...

Page 9: ...Figure 4 5 Bottom Layer Routing www ti com Board Layout SNVU694A FEBRUARY 2020 REVISED JULY 2020 Submit Document Feedback LM76005QEVM User s Guide 9 Copyright 2020 Texas Instruments Incorporated ...

Page 10: ...Figure 4 6 Bottom Layer Routing Board Layout www ti com 10 LM76005QEVM User s Guide SNVU694A FEBRUARY 2020 REVISED JULY 2020 Submit Document Feedback Copyright 2020 Texas Instruments Incorporated ...

Page 11: ...9 RES 59 0 k 1 0 1 W AEC Q200 Grade 0 0603 Vishay Dale CRCW060359K0FKEA 1 R10 RES 232 k 1 0 125 W AEC Q200 Grade 0 0805 Vishay Dale CRCW0805232KFKEA 1 R11 RES 121 k 1 0 125 W AEC Q200 Grade 0 0805 Vishay Dale CRCW0805121KFKEA 1 SH J1 SH J2 Shunt Shunt 100 mil Gold plated Black Samtec SNT 100 BK G 2 TP1 VIN Test Point Multipurpose Red TH Keystone 5010 1 TP2 TP10 VOUT PG_PU Test Point Multipurpose O...

Page 12: ...2 V VIN 24 V VIN 36 V VOUT 3 3 V fSW 400 kHz Auto Mode Figure 6 3 LM76005 Q1 Load and Line Regulation Load Current A O u tp u t V o lta g e V 0 0 5 1 1 5 2 2 5 3 3 5 4 4 5 5 3 3 3 32 3 34 3 36 3 38 3 4 3 42 3 44 3 46 3 48 3 5 VIN 8 V VIN 12 V VIN 24 V VIN 36 V VOUT 3 3 V fSW 400 kHz FPWM Mode Figure 6 4 LM76005 Q1 Load and Line Regulation VIN 12 V VOUT 3 3 V fSW 400 kHz 5 A Load Figure 6 5 LM76005...

Page 13: ...to Revision A July 2020 Page Updated Figure 2 1 2 Updated Section 2 2 3 Updated Section 4 5 Updated Table 5 1 11 www ti com Revision History SNVU694A FEBRUARY 2020 REVISED JULY 2020 Submit Document Feedback LM76005QEVM User s Guide 13 Copyright 2020 Texas Instruments Incorporated ...

Page 14: ...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...

Page 15: ... 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...

Page 16: ...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...

Page 17: ... 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...

Page 18: ...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...

Page 19: ...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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