Texas Instruments BMS034, User Manual, Page: 1 / 31

User’s Guide
BQ25792EVM, BQ25798EVM and BQ25798BKUPEVM
(BMS034) Evaluation Module
ABSTRACT
This user's guide describes the characteristics, operation, and functionality of the BQ25792 and BQ25798
Evaluation Module (EVM). It will also describe the equipment, test setup, and software required to operate the
EVM. A complete schematic diagram, printed-circuit board (PCB) layouts, and bill of materials (BOM) are also
included in this document.
Throughout this user's guide, the abbreviations and terms EVM, BQ2579XEVM, BMS034, and evaluation
module are synonymous with the BQ25792EVM, BQ25798BKUPEVM, and BQ25798EVM.
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WARNING
Hot surface! Contact may cause burns. Do not touch!
Some components may reach high temperatures >55°C when the board is powered on. The user must
not touch the board at any point during operation or immediately after operating, as high temperatures
may be present.
Table of Contents
1 Introduction ............................................................................................................................................................................. 3
1.1 EVM Features.................................................................................................................................................................... 3
1.2 I/O Descriptions.................................................................................................................................................................. 4
1.3 Recommended Operating Conditions................................................................................................................................ 6
2 Test Setup and Results .......................................................................................................................................................... 6
2.1 Equipment.......................................................................................................................................................................... 6
2.2 Equipment Setup................................................................................................................................................................ 6
2.3 Software Setup................................................................................................................................................................... 7
2.4 Test Procedure................................................................................................................................................................... 9
3 PCB Layout Guidelines ........................................................................................................................................................ 14
4 Board Layout, Schematic and Bill of Materials .................................................................................................................. 15
4.1 BMS034 Board Layout..................................................................................................................................................... 15
4.2 BQ2579XEVM (BMS034) Schematics............................................................................................................................. 19
4.3 Bill of Materials................................................................................................................................................................. 22
5 Revision History ................................................................................................................................................................... 25
List of Figures
Figure 2-1. Equipment Test Setup for Testing Battery Charging.................................................................................................. 7
Figure 2-2. Single-Bit Registers Section...................................................................................................................................... 9
Figure 2-3. Multi-Bit Register Section........................................................................................................................................ 10
Figure 2-4. 16-Bit Register Section............................................................................................................................................ 10
Figure 2-5. Icon Guide............................................................................................................................................................... 10
Figure 2-6. Chip Configuration................................................................................................................................................... 11
Figure 2-7. Charger Configuration............................................................................................................................................. 11
Figure 2-8. Single-Bit Register Section...................................................................................................................................... 12
Figure 2-9. Multi-Bit Register Section........................................................................................................................................ 13
www.ti.com Table of Contents
SLUUCB5E – JUNE 2020 – REVISED JULY 2022
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BQ25792EVM, BQ25798EVM and BQ25798BKUPEVM (BMS034) Evaluation
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