BQ25792EVM, BQ25798EVM and BQ25798BKUPEVM (BMS034) Evaluation Module
BQ25792EVM, BQ25798BKUPEVM and BQ25798EVM (BMS034) Evaluation Module
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.
 | 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. |
1 Introduction
The BQ25792 and BQ25798 (BQ25792/8) is an integrated switched-mode buck-boost battery charge management device in QFN package. It is intended to charge 1- to 4-series cell Li-ion and Li-polymer batteries. The charger features a narrow VDC architecture (NVDC) which allows the system to be regulated to a minimum value even if the battery is completely discharged. Additionally, the BQ25792/8 supports input source detection through D+ and D- which is compatible with USB2.0, USB3.0 power delivery, non-standard adapters, and high voltage adapters. With dual input source selection, USB OTG support, and an integrated 16-bit multi-channel analog-to-digital converter (ADC), the BQ25792/8 is a complete charging solution.
1.1 EVM Features
The BQ25792/8EVM is a complete module for evaluating the BQ25792/8 charger IC in the QFN package. Key features of this EVM include:
- Synchronous Switch Mode Buck-Boost Charger for 1s-4s Battery Configuration for 5-A Charging with 10-mA Resolution
- Support for 3.6-V to 24-V Wide Range of Input Sources USB Auto-Detect, USB PD and Wireless Input
- Dual Input Source Selector to Drive Bi-Directional Blocking NFETs
- Power up USB Port from Battery (USB OTG) with 2.8-V to 22-V OTG Output Voltage with 10-mV Resolution
- Low Battery Quiescent Current < 1 µA in Shutdown Mode
- BQ25798 has MPPT and backup mode features.
The device data sheet, listed in Table 1-1, provides detailed features and operation.
