Texas Instruments BQ25720, User Manual, Page: 1 / 24

User’s Guide
BQ25720, BQ25723 Evaluation Module
ABSTRACT
The BQ25720EVM and BQ25723EVM evaluation modules (EVM) are SMBus or I
2
C-controlled NVDC-1 buck
boost charger. The input voltage range is from 3.5 V to 26 V, with a programmable output of 1–4 cells and a
charge output current range of 64 mA to 8.128 A. This EVM does not include the EV2400 interface device; the
EV2400 must be ordered separately to evaluate the BQ2572x EVM.
Table of Contents
1 Introduction ............................................................................................................................................................................. 2
1.1 EVM Features.................................................................................................................................................................... 2
1.2 General Description........................................................................................................................................................... 2
2 Test Summary ......................................................................................................................................................................... 5
2.1 Definitions.......................................................................................................................................................................... 5
2.2 Equipment.......................................................................................................................................................................... 5
2.3 Equipment Setup................................................................................................................................................................ 6
2.4 Procedure........................................................................................................................................................................... 9
3 Bill of Materials, Board Layout, and Schematics ............................................................................................................... 10
3.1 Bill of Materials................................................................................................................................................................. 10
3.2 Board Assembly Layout................................................................................................................................................... 12
3.3 Schematic........................................................................................................................................................................ 18
List of Figures
Figure 2-2. Original Test Setup for BMS035 (BQ2572x EVM)..................................................................................................... 7
Figure 2-3. Main Window of the BQ2572x Evaluation Software.................................................................................................. 8
Figure 2-4. EN_OTG.................................................................................................................................................................... 9
Figure 3-1. Top Assembly.......................................................................................................................................................... 12
Figure 3-2. Bottom Assembly.................................................................................................................................................... 13
Figure 3-3. PCB Layer 1............................................................................................................................................................ 14
Figure 3-4. PCB Layer 2............................................................................................................................................................ 15
Figure 3-5. PCB Layer 3............................................................................................................................................................ 16
Figure 3-6. PCB Layer 4............................................................................................................................................................ 17
List of Tables
Table 1-1. I/O Description............................................................................................................................................................ 3
Table 1-2. Controls and Key Parameters Setting......................................................................................................................... 3
Table 1-3. Recommended Operating Conditions......................................................................................................................... 4
Table 3-1. BQ2572x EVM Bill of Materials................................................................................................................................. 10
Trademarks
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Intel ® is a registered trademark of Intel.
All trademarks are the property of their respective owners.
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SLUUC74 – MAY 2021
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