I2C controlled, 5-A, 1-4 cell buck-boost charger with dual-input selector and USB PD 3.0 OTG output
Product details
Parameters
Package | Pins | Size
Features
- High power density, high integration buck-boost charger for 1-4 cell batteries supporting any USB PD 3.0 profile
- Integrates four switching MOSFETs, BATFET
- Integrates input and charging current sensing
- Highly efficient
- 750-kHz and 1.5-MHz switching frequencies
- 5 A charging current with 10-mA resolution
- 96.5% efficient: 16V battery at 3A from 20V
- Supports a wide range of input sources
- 3.6-V to 24-V wide input operating voltage range with 30-V absolute maximum rating
- Maximum power tracking with VINDPM up to 22 V and IINDPM up to 3.3 A
- Detects USB BC1.2, SDP, CDP, DCP, HVDCP and non-standard adapters
- Dual-input power mux controller for source selection
- Narrow-VDC (NVDC) power path management
- Powers USB port from battery (USB OTG)
- 2.8-V to 22-V OTG output voltage with 10-mV resolution to support USB-PD Programmable Power Supply
- OTG output current regulation up to 3.32 A with 40-mA resolution
- Flexible autonomous and I2C mode for optimal system performance
- Integrated 16-bit ADC for voltage, current and temperature monitoring
- Low battery quiescent current
- Typical 21-µA for battery only operation
- Typical 600 nA in charger shutdown mode
- High accuracy
- +0.65% to -0.85% charge voltage regulation for 2s-4s batteries
- ±5% charge current regulation
- ±5% input current regulation
- Safety
- Thermal regulation and thermal shutdown
- Input/battery OVP and OCP
- Converter MOSFETs OCP
- Charging safety timer
- Package
- 29-Pin 4mm × 4mm QFN
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Description
The BQ25792 is a fully integrated switch-mode buck-boost charger for 1-4 cell Li-ion batteries and Li-polymer batteries. The integration includes 4 switching MOSFETs (Q1, Q2, Q3, Q4), input and charging current sensing circuits, the battery FET (QBAT) and all the loop compensation of the buck-boost converter. It uses narrow VDC power path management, regulating the system slightly above the battery voltage without dropping below a configurable minimum system voltage. When system power exceeds the input source rating, battery supplement mode supports the system without overloading the input source. BQ25792supports the full input and output (OTG) voltage ranges for USB Type-C™ and USB power delivery (USB-PD) applications.
More information
- If you would like to consider a universal standards compliant, up to 20V USB Type-C PD Port to power the charger, please consider TPS25750
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Technical documentation
= Top documentation for this product selected by TI
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | BQ25792 I2C Controlled, 1-4 Cell, 5-A Buck-Boost Battery Charger datasheet (Rev. A) | Nov. 23, 2020 |
| User guide | BQ25792EVM, BQ25796EVM, and BQ25798EVM (BMS034) Evaluation Module (Rev. B) | Dec. 04, 2020 | |
| Technical articles | Adding USB Type-C® with USB Power Delivery to battery-powered applications | Nov. 11, 2020 | |
| White paper | Combining buck-boost battery chargers and USB Type-C™ Power Delivery for maximum | Jul. 24, 2020 | |
| Technical articles | Maximize power density with buck-boost charging and USB Type C™ Power Delivery | Jun. 28, 2020 | |
| Technical articles | Universal and fast charging – a future trend for battery-powered applications | Jun. 26, 2020 | |
| Technical articles | When to use rechargeable batteries in small battery applications | Oct. 01, 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
BQ25792EVM
Description
The BQ25792 evaluation module (EVM) is used to evaluate the BQ25792 device. The BQ25792 is an integrated switched-mode buck-boost battery charge management device in HOTROD (QFN) package, intended for 1- to 4-series cell li-ion and li-polymer batteries from 3.6-V to 24-V input with programmable (...)
Features
- Easily evaluate the high-efficiency 5-A switch-mode buck-boost charger in the HOTROD (QFN) package
- Use of EV2400 interface to switch between charge and USB on-the-go (OTG) as well as monitor charger status and faults as well as voltages and current with an integrated analog-to-digital converter (ADC (...)
Software development
BQSTUDIO — Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)
Features
- Real-time Gauge Dashboard for monitoring basic registers
- Full register access and logging
- Full data memory access and logging
- Product configuration and monitoring tools
- Import and export of product configurations
- Calibration and test automation
- Export of FS files for the target production environment
TI-CHARGER-GUI — The TI-CHARGER-GUI offers a web-based or standalone graphical user interface to assist in the process of evaluating, designing with, configuring or testing battery charger products. The software provides full access to registers and an easy interface to send and sequence commands.
Features
- Web-based or standalone GUI with easy to follow graphic instructions
- Configures supported battery charger evaluation modules (EVMs) through USB2ANY interface adaptor
- Easy to navigate pages organized by functional groupings
- Supports sequenced I2C or SMBus commands
Reference designs
TIDA-050047 — This reference design features charging up to 20 V at 5 A without the need for any external FETs, enabling a much smaller solution size and reducing total BOM cost. A microprocessor is also not necessary as the TPS25750 power delivery (PD) controller will handle the I2C communication to the BQ25792 (...)
Design files
-
download TIDA-050047 BOM.pdf (70KB) -
download TIDA-050047 Assembly Drawing.pdf (260KB) -
download TIDA-050047 PCB.pdf (1704KB) -
download TIDA-050047 CAD Files.zip (35192KB) -
download TIDA-050047 Gerber.zip (696KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| VQFN-HR (RQM) | 29 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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