Texas Instruments TPS3840EVM User Manual

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User's Guide
TPS3840EVM Voltage Supervisor User Guide
This user's guide describes the TPS3840EVM evaluation module (EVM). This guide contains the EVM
schematic, bill of materials (BOM), assembly drawing, and top and bottom board layouts.
1 Trademarks..............................................................................................................................................................................1
2 Introduction.............................................................................................................................................................................2
2.1 Related Documentation......................................................................................................................................................3
2.2 TPS3840 Applications........................................................................................................................................................3
3 Schematic, Bill of Materials, and Layout..............................................................................................................................
3.1 TPS3840EVM Schematic...................................................................................................................................................5
3.2 TPS3840EVM Bill of Materials...........................................................................................................................................
3.3 Layout and Component
4 EVM Connectors.....................................................................................................................................................................
4.1 EVM Test Points.................................................................................................................................................................9
4.2 EVM Jumpers.....................................................................................................................................................................9
5 EVM Setup and Operation....................................................................................................................................................10
5.1 Input Power (V )............................................................................................................................................................
DD
5.2 Monitoring Voltage on
5.3 Reset Output ( RESET )...................................................................................................................................................
5.4 Reset Time Delay Programming (program t
6 Revision History...................................................................................................................................................................
Figure 2-1. TPS3840EVM Board Top..........................................................................................................................................
Figure 2-2. TPS3840EVM Board
Figure 3-1. TPS3840EVM Schematic..........................................................................................................................................5
Figure 3-2. Component Placement-Top
Figure 3-3. Component Placement-Bottom Assembly..............................................................................................................
Figure 3-4. Layout-Top..............................................................................................................................................................
Figure 3-5. Layout-Bottom.........................................................................................................................................................7
Figure 3-6. Top Layer...................................................................................................................................................................8
Figure 3-7. Bottom Layer.............................................................................................................................................................
Figure 3-8. Top Solder Mask........................................................................................................................................................8
Figure 5-1. TPS3840EVM RESET Asserted Due to MR Pulled
Figure 5-2. TPS3840EVM RESET Deasserted Due to MR Pulled High, With Delay t
Figure 5-3. TPS3840EVM Startup Delay Time (t
Figure 5-4. TPS3840EVM Glitch Immunity................................................................................................................................
Figure 5-5. TPS3840EVM RESET Delay Time (t
Figure 5-6. TPS3840EVM RESET Delay Time (t
Figure 5-7. TPS3840EVM RESET Delay Time (t
Table 3-1. BOM............................................................................................................................................................................6
Table 4-1. Test Points..................................................................................................................................................................
Table 4-2. List of Onboard Jumpers.............................................................................................................................................9
Table 5-1. Nominal Supply and Typical Threshold

1 Trademarks

All trademarks are the property of their respective owners.
SNVU611A - DECEMBER 2018 - REVISED MAY 2021
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ABSTRACT

Table of Contents

Placement....................................................................................................................................7
VDD..............................................................................................................................................10
via CT)......................................................................................................
D
List of Figures
Bottom.....................................................................................................................................3
Assembly....................................................................................................................7
) with VDD = 1.6 V and C
STRT
) with C
D
) with C
D
) with C
D
List of Tables
Voltages......................................................................................................10
Copyright © 2021 Texas Instruments Incorporated
Low.........................................................................................10
, C
D
Floating........................................................
T
Tied to GND Through 1-µF Capacitor..........................................
T
Tied to GND Through 0.01-µF Capacitor.....................................
T
Floating.........................................................................................12
T
TPS3840EVM Voltage Supervisor User Guide
Table of Contents
Floating........................................
T
4
6
9
10
11
11
12
2
7
7
8
10
11
11
12
12
9
1