Texas Instruments TPS3899EVM, Руководство пользователя

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User’s Guide
TPS3899EVM Voltage Supervisor User Guide
ABSTRACT
This user’s guide describes the TPS3899EVM evaluation module (EVM). This guide also contains the EVM
schematic, bill of materials (BOM), assembly drawing, and top and bottom board layouts.
Table of Contents
1 Introduction ............................................................................................................................................................................. 2
1.1 Related Documentation...................................................................................................................................................... 3
1.2 TPS3899 Applications........................................................................................................................................................ 3
2 Schematic, Bill of Materials, and Layout .............................................................................................................................. 3
2.1 TPS3899EVM Schematic................................................................................................................................................... 4
2.2 TPS3899EVM Bill of Materials........................................................................................................................................... 5
2.3 Layout and Component Placement.................................................................................................................................... 6
3 EVM Connectors ..................................................................................................................................................................... 8
3.1 EVM Test Points................................................................................................................................................................. 8
3.2 EVM Jumpers..................................................................................................................................................................... 8
4 EVM Setup and Operation ...................................................................................................................................................... 9
4.1 Input Power (VDD)............................................................................................................................................................. 9
4.2 Monitoring Voltage on SENSE Pin..................................................................................................................................... 9
4.3 Reset Output (RESET)....................................................................................................................................................... 9
4.4 Sense and Reset Time Delay Programming (Program t
D-SENSE
and t
D
).......................................................................... 10
4.5 Programmable Push-Button Functionality Using Jumper J5............................................................................................ 11
List of Figures
Figure 1-1. Board Top.................................................................................................................................................................. 2
Figure 1-2. Board Bottom............................................................................................................................................................ 3
Figure 2-1. TPS3899EVM Schematic.......................................................................................................................................... 4
Figure 2-2. Component Placement—Top Assembly.................................................................................................................... 6
Figure 2-3. Component Placement—Bottom Assembly.............................................................................................................. 6
Figure 2-4. Layout—Top.............................................................................................................................................................. 6
Figure 2-5. Layout—Bottom......................................................................................................................................................... 6
Figure 2-6. Top Layer................................................................................................................................................................... 7
Figure 2-7. Bottom Layer............................................................................................................................................................. 7
Figure 2-8. Top Solder Mask........................................................................................................................................................ 7
Figure 4-1. Sense Delay Oscilloscope Capture......................................................................................................................... 10
Figure 4-2. Reset Delay Oscilloscope Capture.......................................................................................................................... 10
Figure 4-3. Programmable Push-Button Circuit......................................................................................................................... 11
Figure 4-4. Programmable Push-Button Timing Diagram.......................................................................................................... 11
List of Tables
Table 2-1. TPS3899EVM Bill of Materials.................................................................................................................................... 5
Table 3-1. Test Points.................................................................................................................................................................. 8
Table 3-2. EVM Jumpers............................................................................................................................................................. 8
Table 4-1. Default EVM Nominal Input Threshold Voltage........................................................................................................... 9
Table 4-2. Sense and Reset Delay Programming with CTS and CTR Pins............................................................................... 10
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SLVUBZ3 – SEPTEMBER 2020
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