Texas Instruments TPS7A74EVM-068 User Manual Download Page 9 | Manualshive

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Figure 3-5. Layer 4

Figure 3-6. Layer 5

Figure 3-7. Bottom Layer Routing

Figure 3-8. Bottom Assembly Layer and Silk

Screen

Board Layout

SBVU076 – APRIL 2022

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TPS7A74EVM-068 Evaluation Module

9

Copyright © 2022 Texas Instruments Incorporated

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Summary of Contents for TPS7A74EVM-068

Page 1: ...7A74 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 bill of materials BOM Throughout this document the terms evaluation board evaluation module and EVM are synonymous with the TPS7A74EVM 068 www ti com SBVU076 APRIL 2022 Submit Document Feedback TPS7A74EVM...

Page 2: ...oad Transient Results 50 μA to 1 42 A Load Step 7 Figure 2 4 TPS7A74EVM 068 Load Transient Results 1 42 A to 50 μA Load Step 7 Figure 3 1 Top Assembly Layer and Silk Screen 8 Figure 3 2 Top Layer Routing 8 Figure 3 3 Layer 2 8 Figure 3 4 Layer 3 8 Figure 3 5 Layer 4 9 Figure 3 6 Layer 5 9 Figure 3 7 Bottom Layer Routing 9 Figure 3 8 Bottom Assembly Layer and Silk Screen 9 Figure 4 1 Schematic 10 T...

Page 3: ...onnection terminals for the input supply The VIN terminal is the positive connection and the GND terminal is the negative that is ground connection 2 1 2 BIAS and GND BIAS and GND are the connection terminals for the bias supply The BIAS terminal is the positive connection and the GND terminal is the negative that is ground connection 2 1 3 VOUT and GND VOUT and GND are the connection terminals fo...

Page 4: ...s provide an implementation example as illustrated by the white boxes in Figure 2 2 The prepopulated capacitors are sized to ensure the minimum capacitance requirements are maintained under all normal operating conditions Optional pads are available to test the LDO with additional setpoint options as well as input bias and output capacitors beyond what is already installed on the EVM Setpoint resi...

Page 5: ... the input and output current The slots were sized to fit most current probes such as the LeCroy AP015 or CP031 current probes Figure 2 2 TPS7A74EVM 068 With Current Probes Attached www ti com Setup SBVU076 APRIL 2022 Submit Document Feedback TPS7A74EVM 068 Evaluation Module 5 Copyright 2022 Texas Instruments Incorporated ...

Page 6: ...ent probe Optional kelvin sense points are provided using the SMA connectors J1 VIN and J2 VOUT 2 4 Optional Load Transient Circuit Operation The TPS7A74EVM 068 evaluation module contains an optional high performance load transient circuit to allow efficient testing of the TPS7A74 LDO load transient performance To use the optional load transient circuit install the correct components in accordance...

Page 7: ...nd R2 provide 50 μA of DC load current A 20 kΩ resistor is installed on the EVM at R18 and a 20 kΩ resistor is installed on the EVM at R20 These resistors provide approximately 0 75 A μs slew rate from 0 mA to 1 5 A and 0 5 A μs slew rate from 1 5 A to 0 mA Figure 2 3 and Figure 2 4 provide example test data with R18 20 kΩ and R20 20 kΩ The orange trace is the input voltage the green trace is the ...

Page 8: ... R16 are 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 TPS7A74 data sheet Figure 3 1 Top Assembly Layer and Silk Screen Figure 3 2 Top Layer Routing Figure 3 3 Layer 2 Figure 3 4 Layer 3 Board Layout www ti com 8 TPS7A74EVM 068 Evaluation Module SBVU076 APRIL 2022 Subm...

Page 9: ...er 5 Figure 3 7 Bottom Layer Routing Figure 3 8 Bottom Assembly Layer and Silk Screen www ti com Board Layout SBVU076 APRIL 2022 Submit Document Feedback TPS7A74EVM 068 Evaluation Module 9 Copyright 2022 Texas Instruments Incorporated ...

Page 10: ...0uF C12 10V 10uF C2 25V 1000pF C1 10µF 10V C3 47µF 6 3V C8 63V 10uF C4 J6 1 2 3 4 5 6 7 8 J19 BIAS SS FB BIAS SS FB J5 J15 BIAS Recommended Max 5 5V VDD Recommended Max 5 4V 10V 10uF C13 10V 4 7uF C7 VDD 47µF 6 3V C14 63V 10uF C11 47µF 6 3V C15 47µF 6 3V C9 7 15k R1 7 15k R10 8 45k R3 5 49k R4 13 3k R2 1 74k R6 4 02k R5 1 2 3 4 5 6 7 8 9 10 J16 25V 10uF C6 1 00 R9 25V 10uF C5 1 00 R8 25V 10uF C18 ...

Page 11: ...old TH Header 2 54mm 3x1 TH 61300311121 Wurth Elektronik J10 J12 2 Terminal Block 5 mm 2x1 Tin TH Terminal Block 5 mm 2x1 TH 691 101 710 002 Wurth Elektronik J13 J14 J22 J23 J27 J29 6 Jumper SMT shorting jumper SMT JMP 36 30X40SMT Any J15 J17 J18 J30 4 Standard Banana Jack insulated 10A black 571 0100 571 0100 DEM Manufacturing J16 1 Header 2 54mm 5x2 Gold SMT Header 2 54mm 5x2 SMT TSM 105 01 L DV...

Page 12: ...CERM 1000 pF 25 V 5 X7R 0402 402 C0402C102J3RAC TU Kemet C2 C12 C13 0 10uF CAP CERM 10 uF 10 V 20 X5R 0603 603 GRM188R61A106M AALD MuRata C3 0 10uF CAP CERM 10 uF 10 V 20 X7R 0805 805 C2012X7R1A106M 125AC TDK C4 C11 0 10uF CAP CERM 10 uF 63 V 10 X7R 1210 1210 GRM32ER71J106K A12L MuRata C5 C6 C10 C18 0 10uF CAP TA 10 uF 25 V 20 0 5 ohm SMD 6032 28 TPSC106M025R05 00 AVX C9 C14 0 47µF 47 µF 20 6 3V C...

Page 13: ...Panasonic R10 0 7 15k 7 15 kOhms 1 0 1W 1 10W Chip Resistor 0402 1005 Metric Automotive AEC Q200 Thick Film 402 ERJ 2RKF7151X Panasonic R11 R19 0 1 00k RES 1 00 k 1 0 125 W AEC Q200 Grade 0 0805 805 ERJ 6ENF1001V Panasonic R12 R13 R14 R15 R16 0 154 RES 154 1 0 5 W 1210 1210 RC1210FR 07154R L Yageo R17 0 0 RES 0 5 0 125 W AEC Q200 Grade 0 0805 805 ERJ 6GEY0R00V Panasonic R21 R22 0 0 RES 0 1 0 1 W A...

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: ...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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