CEDV li-ion gas gauge and battery management controller
Product details
Parameters
Package | Pins | Size
Features
- Compensated End-of-Discharge Voltage (CEDV) Gauging Algorithm
- Supports SMBus Host Communication
- Flexible Configuration for 3- to 5-Series (bq76920), 6- to 10-Series (bq76930), and 9- to 15-Series (bq76940) Li-Ion and LiFePO4 Batteries
- Supports Battery Configurations up to 320 Ahr
- Supports Charge and Discharge Current Reporting up to 320 A
- On-Chip Temperature Sensor Option
- External NTC Thermistor Support from Companion AFE
- Full Array of Programmable Protection Features
- Voltage, Current, and Temperature
- System Components
- Lifetime Data Logging
- Supports CC-CV Charging, Including Precharge, Charge Inhibit, and Charge Suspend
- Offers an Optional Resistor Programmable SMBus Slave Address for up to Eight Different Bus Addresses
- Drives up to a 5-Segment LED or LCD Display for State-Of-Charge Indication
- Provides SHA-1 Authentication
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Description
The Texas Instruments bq78350-R1 Li-Ion and LiFePO4 Battery Management Controller and companion to the bq769x0 family of Analog Front End (AFE) protection devices provides a comprehensive set of Battery Management System (BMS) subsystems, helping to accelerate product development for faster time-to-market.
The bq78350-R1 controller and the bq769x0 AFE support 3-series to 15-series cell applications. The bq78350-R1 device provides an accurate fuel gauge and state-of-health (SoH) monitor, as well as cell balancing and a full range of voltage-, current-, and temperature-based protection features.
The bq78350-R1 device offers optional LED or LCD display configurations for capacity reporting. It also makes data available over its SMBus 1.1 interface. Battery history and diagnostic data is also kept within the device in non-volatile memory and is available over the same interface.
More information
Device firmware is available (BQ78350-R2-DEVICE-FW). Request now
Exact equivalent in functionality and parametrics to the compared device:
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | bq78350-R1 CEDV Li-Ion Gas Gauge and Battery Management Controller Companion to the bq769x0 Battery Monitoring AFE datasheet (Rev. B) | Nov. 06, 2018 |
| User guides | BQ78350-R1 Technical Reference Manual (Rev. E) | Jan. 09, 2020 | |
| Technical articles | Protector, monitor or gauge – selecting the correct battery electronics for your Li-ion-powered system | Jun. 13, 2019 | |
| User guides | bq76930 and bq76940 Evaluation Module (Rev. C) | Dec. 10, 2018 | |
| User guides | bq76920 Evaluation Module User's Guide (Rev. D) | Nov. 12, 2018 | |
| Application notes | Using the bq78350-R1 | Nov. 05, 2018 | |
| Technical articles | How to choose a multicell gauge | Dec. 16, 2016 | |
| Application notes | SMBus Made Simple | Nov. 09, 2016 | |
| Technical articles | How active and passive cell balancing works | Oct. 05, 2016 | |
| Technical articles | A battery driver you can count on to keep you going | Feb. 04, 2016 | |
| Application notes | bq78350 Data Memory Programming for Mass Production | Apr. 16, 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The bq76920EVM is a populated circuit board for evaluation of the bq7692000 analog front-end (AFE) along with the bq78350 Battery Management Controller that serves as part of a complete pack monitoring and protection solution for 3 to 5-series Lithium Ion, Lithium iron phosphate, and more battery (...)
Features
- Populated circuit board with:
- Bq7692000 AFE IC
- Bq78350 Battery Management controller
- FETs for current control
- Test point patterns for easy evaluation
Description
The bq76930EVM is a populated circuit board for evaluation of the bq76930 analog front-end (AFE) along with the bq78350 Battery Management Controller that serves as part of a complete pack monitoring and protection solution for 6 to 10-series Lithium Ion, Lithium iron phosphate, and more battery (...)
Features
- Bq7693000 AFE IC
- Bq78350 Battery Management controller
- FETs for current control
- Test point patterns for easy evaluation
Description
The bq76940EVM is a populated circuit board for evaluation of the bq76940 analog front-end (AFE) along with the bq78350 Battery Management Controller that serves as part of a complete pack monitoring and protection solution for 9 to 15-series Lithium Ion, Lithium iron phosphate, and more battery (...)
Features
- Bq7694000 AFE IC
- Bq78350 Battery Management controller
- FETs for current control
- Test point patterns for easy evaluation
Software development
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
Features
- Compensated End-of-Discharge Voltage (CEDV) gauging algorithm
- Supports SMBus host communication
- Flexible configuration for 3- to 5-Series (bq76920), 6- to 10-Series (bq76930), and 9- to 15-Series (bq76940) li-ion and LiFePO4 batteries
- Supports battery configurations up to 320Ahr
- Supports charge and (...)
Design tools & simulation
- Simple guide to CEDV data collection for gauging parameter calculator (GPC)
- Simple guide to chemical ID selection tool (GPC)
- Golden GG maker and resistance temperature compensation optimizer
GPC variants based on gas gauge types and type of optimization
Reference designs
Design files
-
download TIDA-00792 BOM.pdf (70KB) -
download TIDA-00792 Assembly Drawing.pdf (441KB) -
download TIDA-00792 PCB.pdf (2197KB) -
download TIDA-00792 Gerber.zip (845KB) -
download TIDA-00792 CAD Files (Rev. A).zip (1909KB)
Design files
-
download TIDA-00255 BOM.pdf (114KB) -
download TIDA-00255 Assembly Drawing.pdf (1167KB) -
download TIDA-00255 Fabrication Drawing.pdf (579KB) -
download TIDA-00255 PCB.pdf (5251KB) -
download TIDA-00255 Altium.zip (1865KB) -
download TIDA-00255 Gerber.zip (1058KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| TSSOP (DBT) | 30 | View options |
Ordering & quality
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