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SLUUC58 – November 2019

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TPS62842EVM-103 User's Guide

User's Guide

SLUUC58 – November 2019

TPS62842EVM-103 User's Guide

The TPS62842EVM-103 facilitates the evaluation of the TPS62842DGR of 750-mA, step-down converter
with 60-nA I

Q

in a DGR package. The EVM has output voltages between 1.8 V and 3.6 V from higher input

voltages between 1.8 V and 6.5 V. Due to its extremely low I

Q

, the TPS6284x provides a long battery

lifetime for systems which have very low current consumption states such as building automation,
metering, and the Internet of Things (IoT).

Contents

1

Introduction

...................................................................................................................

2

2

Setup

..........................................................................................................................

4

3

TPS62842EVM-103 Test Results

.........................................................................................

5

4

Board Layout

.................................................................................................................

6

5

Schematic and List of Materials

.........................................................................................

10

List of Figures

1

Loop Response Measurement Modification

..............................................................................

3

2

TPS62842 Thermal Performance (V

IN

= 6.5 V, V

OUT

= 3.6 V, I

OUT

= 750 mA)

........................................

5

3

Top Assembly

................................................................................................................

6

4

Top Layer

.....................................................................................................................

6

5

Internal Layer 1

..............................................................................................................

7

6

Internal Layer 2

..............................................................................................................

7

7

Bottom Layer

.................................................................................................................

8

8

TPS62842EVM-103 Angled View

.........................................................................................

8

9

TPS62842EVM-103 Top View

.............................................................................................

9

10

TPS62842EVM-103 Schematic

..........................................................................................

10

List of Tables

1

Performance Specification Summary

.....................................................................................

2

2

TPS62842EVM-103 List of Materials

....................................................................................

10

Trademarks

Summary of Contents for TPS62842DGR

Page 1: ...battery lifetime for systems which have very low current consumption states such as building automation metering and the Internet of Things IoT Contents 1 Introduction 2 2 Setup 4 3 TPS62842EVM 103 T...

Page 2: ...rated circuit IC Additional input and output capacitors can also be added Finally the loop response of the IC can be measured 1 2 1 Adjusting the Output Voltage The output voltage is adjusted though t...

Page 3: ...he output capacitor on the top layer This change is shown in Figure 1 Second install a 10 resistor across the resistor pads on the back of the PCB at R13 The pads are spaced to allow installation of a...

Page 4: ...and 2 VOUT Output voltage connection J12 Pin 3 and 4 S S Output voltage sense connections Measure the output voltage at this point J12 Pin 5 and 6 GND Output return connection JP11 EN EN pin input jum...

Page 5: ...842EVM 103 User s Guide 3 TPS62842EVM 103 Test Results The TPS62842EVM 103 was used to take all the data in the 1 8V 6 5V 750mA 60nA IQ Step Down Converter data sheet See the device data sheet for the...

Page 6: ...Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS62842EVM 103 User s Guide 4 Board Layout This section provides the TPS62842EVM 103 board layout and illustrations in Figure 3 th...

Page 7: ...w ti com Board Layout 7 SLUUC58 November 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS62842EVM 103 User s Guide Figure 5 Internal Layer 1 Figure 6 Internal Layer...

Page 8: ...Layout www ti com 8 SLUUC58 November 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS62842EVM 103 User s Guide Figure 7 Bottom Layer Figure 8 TPS62842EVM 103 Angled...

Page 9: ...www ti com Board Layout 9 SLUUC58 November 2019 Submit Documentation Feedback Copyright 2019 Texas Instruments Incorporated TPS62842EVM 103 User s Guide Figure 9 TPS62842EVM 103 Top View...

Page 10: ...62842EVM 103 schematic and List of Materials 5 1 Schematic Figure 10 illustrates the TPS62842EVM 103 schematic Figure 10 TPS62842EVM 103 Schematic 5 2 List of Materials Table 2 lists the TPS62842EVM 1...

Page 11: ...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 12: ...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 13: ...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 14: ...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 15: ...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 16: ...e 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 reprod...

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