Texas Instruments LP875761-Q1, User Manual

Page: 1 / 36

User’s Guide
The LP875761Q1EVM Evaluation Module
ABSTRACT
This user’s guide describes the operation of the BMC043 evaluation module for the LP875761-Q1 multi-phase 4-
core step-down converter from Texas Instruments (TI). The LP875761-Q1 is intended to be used in 4-phase
output configuration (see
Table 2-1 ). The user’s guide also provides design information including the schematic
and bill of materials (BOM).
Warning Warning Hot surface.
Contact may cause burns.
Do not touch!
Table of Contents
1 Trademarks .............................................................................................................................................................................. 2
2 Overview .................................................................................................................................................................................. 3
3 Quick Setup Guide .................................................................................................................................................................. 3
3.1 Installing/Opening the Software......................................................................................................................................... 4
3.2 Power Supply Setup........................................................................................................................................................... 7
3.3 Notes on Efficiency Measurement Procedure.................................................................................................................. 10
4 GUI Overview ........................................................................................................................................................................ 10
4.1 Main Tab........................................................................................................................................................................... 10
4.2 Other Tabs and Menus..................................................................................................................................................... 11
4.3 Console............................................................................................................................................................................ 17
5 Bill of Materials ..................................................................................................................................................................... 19
6 Board Layout ......................................................................................................................................................................... 21
7 LP875761Q1EVM Schematics .............................................................................................................................................. 29
8 Revision History ................................................................................................................................................................... 30
List of Figures
Figure 2-1. LP875761Q1EVM..................................................................................................................................................... 3
Figure 3-1. LP8757 Installer License Agreement........................................................................................................................ 4
Figure 3-2. Features of LP8757 Installation................................................................................................................................. 5
Figure 3-3. LP8757 Destination Folder........................................................................................................................................ 5
Figure 3-4. LP8757 Installation Complete................................................................................................................................... 6
Figure 3-5. Evaluation Software Graphical User Interface (GUI) When Board Connected......................................................... 6
Figure 3-6. Assert nRST.............................................................................................................................................................. 7
Figure 3-7. Read Registers Buttons............................................................................................................................................ 8
Figure 3-8. BUCK0 Enabled........................................................................................................................................................ 8
Figure 3-9. Assert EN1................................................................................................................................................................ 9
Figure 4-1. Accessing Direct Register Write.............................................................................................................................. 12
Figure 4-2. Direct Register Access View................................................................................................................................... 13
Figure 4-3. Selecting Register Values........................................................................................................................................ 14
Figure 4-4. Register Update Mode............................................................................................................................................ 15
Figure 4-5. Config Tab of the LP8757 GUI................................................................................................................................ 16
Figure 4-6. Advanced Tab of LP8757 GUI................................................................................................................................. 16
Figure 4-7. Opening Console..................................................................................................................................................... 17
Figure 4-8. Example of Command Use in Console................................................................................................................... 18
Figure 6-1. Board Stack-Up....................................................................................................................................................... 21
Figure 6-2. Top View of the LP875761-Q1EVM......................................................................................................................... 22
www.ti.com Table of Contents
SNVU751 – OCTOBER 2020
Submit Document Feedback
The LP875761Q1EVM Evaluation Module 1
Copyright © 2020 Texas Instruments Incorporated