Overview
The Texas Instruments (TI) BQ76952PFBR is a highly integrated, high-accuracy battery monitor and protector designed for lithium-ion, lithium-polymer, and lithium iron phosphate (LiFePO4) battery packs. This device is particularly suited for applications in electric vehicles, energy storage systems, and portable electronics. It features advanced power management strategies, precise temperature sensing, and robust system redundancy, ensuring efficient and reliable battery operation. The BQ76952PFBR supports cell balancing, voltage monitoring, and temperature sensing, making it an ideal solution for battery management systems (BMS) that require precise monitoring and control of battery cells.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments (TI) | |
| Part Number | BQ76952PFBR | |
| Package Type | TQFP-48 | |
| Number of Channels | 16 | |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Range | 4.7 to 80 | V |
| Input Voltage Range (VIN) | VSS-0.3 to VSS+85 | V |
| Peak Reflow Temperature | 260 | °C |
| Moisture Sensitivity Level | 2 | |
| Terminal Finish | NICKEL PALLADIUM GOLD | |
| Communication Interfaces | 400-kHz I²C, SPI, HDQ one-wire |
Key Features
- Innovative power management strategies
- Precise temperature sensing technology
- Robust system redundancy design
- Advanced power optimization
- Safe power management control
- Rapid error detection
- Faultless cell balancing
- Rapid power recharge
- Accurate voltage regulation
- Efficient thermal monitoring
- Integrated charge pump for high-side NFET protection with optional autonomous recovery
- Extensive protection suite including voltage, temperature, current, and internal diagnostics
- Two independent ADCs
- Support for simultaneous current and voltage sampling
- High-accuracy coulomb counter with input offset error < 1 µV (typical)
- High accuracy cell voltage measurement < 10 mV (typical)
- Integrated secondary chemical fuse drive protection
- Autonomous or host-controlled cell balancing
- Multiple power modes (NORMAL, SLEEP, DEEPSLEEP, SHUTDOWN)
- Integrated one-time-programmable (OTP) memory programmable by customers on production line
- Dual-programmable LDOs for external system usage
Applications
The BQ76952PFBR is commonly used in battery management systems (BMS) for various applications, including:
- Electric vehicles (EVs)
- Energy storage systems (ESS)
- Portable electronics
- Other industrial battery packs (≥10S)
- Non-military drones
Q & A
- What is the BQ76952PFBR used for?
The BQ76952PFBR is used for battery monitoring and protection in lithium-ion, lithium-polymer, and LiFePO4 battery packs, particularly in electric vehicles, energy storage systems, and portable electronics.
- What are the key features of the BQ76952PFBR?
The key features include innovative power management strategies, precise temperature sensing, robust system redundancy, advanced power optimization, safe power management control, and rapid error detection, among others.
- What is the package type of the BQ76952PFBR?
The package type is TQFP-48.
- What is the operating temperature range of the BQ76952PFBR?
The operating temperature range is -40°C to 85°C.
- What communication interfaces does the BQ76952PFBR support?
The device supports 400-kHz I²C, SPI, and HDQ one-wire interfaces.
- Does the BQ76952PFBR support cell balancing?
- What is the typical input offset error of the coulomb counter in the BQ76952PFBR?
- Can the BQ76952PFBR measure cell voltage accurately?
- Does the BQ76952PFBR have integrated protection features?
- What are the power modes available in the BQ76952PFBR?
