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User’s Guide

TPS785EVM-033 Evaluation Module

ABSTRACT

This user’s guide describes the operational use of the TPS785EVM-033 evaluation module (EVM) as a
reference design for engineering demonstration and evaluation of the TPS785QDRBRQ1 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 

demonstration kit

evaluation board

, and 

evaluation module

 are

synonymous with the TPS785EVM-033.

Table 1-1

 lists the related documentation available through the Texas Instruments web site at 

www.ti.com

.

Table 1-1. Related Documentation

Device

Literature Number

TPS785-Q1

SBVS388

www.ti.com

SBVU069 – FEBRUARY 2021

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TPS785EVM-033 Evaluation Module

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Copyright © 2021 Texas Instruments Incorporated

Summary of Contents for TPS785EVM-033

Page 1: ...yout guidelines a printed circuit board PCB layout a schematic diagram and a bill of materials BOM Throughout this document the terms demonstration kit evaluation board and evaluation module are synon...

Page 2: ...6 Figure 6 2 Top Layer Routing 6 Figure 6 3 Signal Layer 1 Routing 6 Figure 6 4 Signal Layer 2 Routing 6 Figure 6 5 Bottom Layer Routing 6 Figure 7 1 TPS785EVM 033 Schematic 7 List of Tables Table 1...

Page 3: ...Do not touch CAUTION The circuit module may be damaged by overtemperature To avoid damage monitor the temperature during evaluation and provide cooling as needed for your system environment CAUTION S...

Page 4: ...Jack Input ground return connector 2 1 7 J7 GND Banana Jack Output ground return connector 2 1 8 J8 OUTPUT VOLTAGE SET For convenience the EVM is prepopulated with four resistor divider options Place...

Page 5: ...the input power supply to VIN at the J1 connector of the EVM 3 Connect the ground lead from the input power supply to GND at the J6 connector of the EVM 4 Connect a 0 A to 1 A load between VOUT J2 con...

Page 6: ...Composite View Figure 6 2 Top Layer Routing Figure 6 3 Signal Layer 1 Routing Figure 6 4 Signal Layer 2 Routing Figure 6 5 Bottom Layer Routing PCB Layout www ti com 6 TPS785EVM 033 Evaluation Module...

Page 7: ...J3 IN_S DNP J4 OUT_S DNP VIN EN VOUT FB GND 1 2 J9 DNP 1 2 J10 DNP 1 3 5 7 J11A DNP 2 4 6 8 J11B DNP GND 1 3 5 7 J8A 2 4 6 8 J8B Iout Up to 1 A J1 Vin J2 Vout J6 GND J7 GND VIN VOUT EN FB 0 R10 1 0M...

Page 8: ...sonic R2 1 21 5k RES 21 5 k 1 0 125 W AEC Q200 Grade 0 0805 0805 ERJ 6ENF2152V Panasonic R3 1 8 06k RES 8 06 k 1 0 125 W AEC Q200 Grade 0 0805 0805 ERJ 6ENF8061V Panasonic R4 1 6 19k RES 6 19 k 1 0 12...

Page 9: ...0 Nylon Standoff 1902C Keystone J3 J4 0 SMA Straight PCB Socket Die Cast 50 Ohm TH SMA Straight PCB Socket Die Cast TH 5 1814832 1 TE Connectivity J9 J10 0 Terminal Block 5 mm 2x1 Tin TH Terminal Bloc...

Page 10: ...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...

Page 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 in...

Page 12: ...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...

Page 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 electr...

Page 14: ...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...

Page 15: ...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...

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