Overview
The Texas Instruments BQ78350-R1A is a comprehensive Battery Management System (BMS) controller designed to support lithium-ion (Li-ion) and lithium iron phosphate (LiFePO4) battery packs. It is a companion device to the BQ769x0 family of analog front end (AFE) protection devices. This controller accelerates product development by providing a feature-rich BMS solution, enabling accurate fuel gauging, state-of-health (SoH) monitoring, cell balancing, and a full array of programmable protection features. The BQ78350-R1A supports battery configurations ranging from 3-series to 15-series cells and is suitable for large battery pack applications up to 320 Ahr and 320 A charge/discharge currents.
Key Specifications
| Specification | Value |
|---|---|
| Package | 30-Lead TSSOP (DBT) |
| Operating Temperature Range | -40°C to 85°C |
| Package Quantity | Carrier 2,000 (LARGE T&R) |
| Battery Type | Lithium-ion, Lithium Iron Phosphate (LiFePO4) |
| Output Voltage | 5.5 V |
| Communication Interface | SMBus v1.1 |
| Maximum Battery Capacity | Up to 320 Ahr |
| Maximum Charge/Discharge Current | Up to 320 A |
Key Features
- Compensated End-of-Discharge Voltage (CEDV) gauging algorithm for accurate fuel gauging and state-of-health monitoring.
- Supports SMBus host communication for data exchange.
- Flexible configuration for 3- to 15-series Li-ion and LiFePO4 batteries.
- Full array of programmable protection features including voltage, current, and temperature protection.
- Supports CC-CV charging with precharge, charge inhibit, and charge suspend capabilities.
- Optional LED or LCD display configurations for state-of-charge indication.
- SHA-1 authentication for secure communication.
- On-chip temperature sensor option and external NTC thermistor support.
- Lifetime data logging and diagnostic capabilities.
- Normal, sleep, and shutdown power modes for power management.
Applications
The BQ78350-R1A is designed for use in a variety of battery-powered applications, including but not limited to:
- Electric vehicles and hybrid electric vehicles.
- Energy storage systems (ESS) and grid-scale batteries.
- Industrial power tools and equipment.
- Renewable energy systems such as solar and wind power storage.
- High-capacity battery packs for consumer electronics and medical devices.
Q & A
- What is the primary function of the BQ78350-R1A?
The BQ78350-R1A is a Battery Management System (BMS) controller designed to manage and monitor lithium-ion and lithium iron phosphate battery packs.
- What types of batteries does the BQ78350-R1A support?
The BQ78350-R1A supports lithium-ion (Li-ion) and lithium iron phosphate (LiFePO4) batteries.
- What is the range of battery configurations supported by the BQ78350-R1A?
The BQ78350-R1A supports battery configurations ranging from 3-series to 15-series cells.
- What communication interface does the BQ78350-R1A use?
The BQ78350-R1A uses the SMBus v1.1 interface for communication.
- Does the BQ78350-R1A support temperature monitoring?
Yes, the BQ78350-R1A supports temperature monitoring using internal or external temperature sensors.
- What power modes are available on the BQ78350-R1A?
The BQ78350-R1A has normal, sleep, and shutdown power modes for power management.
- Can the BQ78350-R1A be used with different SMBus addresses?
Yes, the BQ78350-R1A supports up to eight different SMBus slave addresses using an optional resistor programmable configuration.
- Does the BQ78350-R1A provide any display options for state-of-charge indication?
Yes, the BQ78350-R1A can drive up to a 5-segment LED or LCD display for state-of-charge indication.
- What security feature does the BQ78350-R1A include?
The BQ78350-R1A includes SHA-1 authentication for secure communication.
- What is the operating temperature range of the BQ78350-R1A?
The operating temperature range of the BQ78350-R1A is -40°C to 85°C.
