Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family
Similar functionality to the compared device.
Product details
Parameters
We are not able to display this information. Please refer to the product data sheet.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
- External NTC Thermistor Support from Companion AFE
- Full Array of Programmable Protection Features
- Voltage
- Current
- 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
Description
The Texas Instruments bq78350 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 controller and the bq769x0 AFE support from 3-series to 15-series cell applications. The bq78350 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 offers optional LED or LCD display configurations for the 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.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | bq78350 CEDV Li-Ion Gas Gauge and Battery Management Controller Companion to the bq769x0 Battery Monitoring AFE datasheet | Jun. 14, 2012 |
| User guide | bq76930 and bq76940 Evaluation Module (Rev. C) | Dec. 10, 2018 | |
| User guide | bq76920 Evaluation Module User's Guide (Rev. D) | Nov. 12, 2018 | |
| Technical article | When it comes to batteries, not even the sky’s the limit | Aug. 15, 2015 | |
| Technical article | It’s a dirty job, but nobody’s gotta do it: Rise of the (domestic) robots | Jul. 29, 2015 | |
| User guide | bq78350 Technical Reference Manual (Rev. B) | Jul. 22, 2015 | |
| Application note | bq78350 Data Memory Programming for Mass Production | Apr. 16, 2015 | |
| Application note | Using the bq78350 (Rev. A) | Aug. 04, 2014 | |
| Application note | Using the bq78350 | Jun. 25, 2014 |
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
- 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-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
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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