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電池管理 IC
電池監控器和平衡器

BQ76930

現行

6 至 10 串聯芯鋰電池和磷酸鐵鋰電池監控器 (bq76940 系列)

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產品規格表

BQ76930

現行
產品規格表 立即訂購

產品詳細資料

Number of series cells (min) 6 Vin (max) (V) 50 Features Digital output, LDO output, Low-side driver, Overcurrent in discharging protection, Short-current detection Device type Cell monitor and balancer Number of series cells (max) 10 Operating temperature range (°C) -40 to 85 Rating Catalog Battery overvoltage protection (min) (V) 3.15 Battery overvoltage protection (max) (V) 4.7 Communication interface I2C Operating current (typ) (µA) 40
Number of series cells (min) 6 Vin (max) (V) 50 Features Digital output, LDO output, Low-side driver, Overcurrent in discharging protection, Short-current detection Device type Cell monitor and balancer Number of series cells (max) 10 Operating temperature range (°C) -40 to 85 Rating Catalog Battery overvoltage protection (min) (V) 3.15 Battery overvoltage protection (max) (V) 4.7 Communication interface I2C Operating current (typ) (µA) 40
TSSOP (DBT) 30 49.92 mm² 7.8 x 6.4
  • AFE monitoring features
    • Pure digital interface
    • Internal ADC measures cell voltage, die temperature, and external thermistor
    • A separate, internal ADC measures pack current (coulomb counter)
    • Directly supports up to three thermistors (103AT)
  • Hardware protection features
    • Overcurrent in Discharge (OCD)
    • Short Circuit in Discharge (SCD)
    • Overvoltage (OV)
    • Undervoltage (UV)
    • Secondary protector fault detection
  • Additional features
    • Integrated cell balancing FETs
    • Charge, discharge low-side NCH FET drivers
    • Alert interrupt to host microcontroller
    • 2.5-V or 3.3-V output voltage regulator
    • No EEPROM programming necessary
    • High supply voltage absolute maximum (up to 108 V)
    • Simple I2C compatible interface (CRC option)
    • Random cell connection tolerant
  • AFE monitoring features
    • Pure digital interface
    • Internal ADC measures cell voltage, die temperature, and external thermistor
    • A separate, internal ADC measures pack current (coulomb counter)
    • Directly supports up to three thermistors (103AT)
  • Hardware protection features
    • Overcurrent in Discharge (OCD)
    • Short Circuit in Discharge (SCD)
    • Overvoltage (OV)
    • Undervoltage (UV)
    • Secondary protector fault detection
  • Additional features
    • Integrated cell balancing FETs
    • Charge, discharge low-side NCH FET drivers
    • Alert interrupt to host microcontroller
    • 2.5-V or 3.3-V output voltage regulator
    • No EEPROM programming necessary
    • High supply voltage absolute maximum (up to 108 V)
    • Simple I2C compatible interface (CRC option)
    • Random cell connection tolerant

The BQ769x0 family of robust analog front-end (AFE) devices serves as part of a complete pack monitoring and protection solution for next-generation, high-power systems, such as light electric vehicles, power tools, and uninterruptible power supplies. The BQ769x0 is designed with low power in mind: Sub-blocks within the IC may be enabled or disabled to control the overall chip current consumption, and a SHIP mode provides a simple way to put the pack into an ultra-low power state.

The BQ76920 device supports up to 5-series cells or typical 18-V packs, the BQ76930 handles up to 10-series cells or typical 36-V packs, and the BQ76940 works for up to 15-series cells or typical 48-V packs. A variety of battery chemistries may be managed with these AFEs, including Li-ion, Li-iron phosphate, and more. Through I2C, a host controller can use the BQ769x0 to implement many battery pack management functions, such as monitoring (cell voltages, pack current, pack temperatures), protection (controlling charge/discharge FETs), and balancing. Integrated A/D converters enable a purely digital readout of critical system parameters, with calibration handled in TI’s manufacturing process.

The BQ769x0 family of robust analog front-end (AFE) devices serves as part of a complete pack monitoring and protection solution for next-generation, high-power systems, such as light electric vehicles, power tools, and uninterruptible power supplies. The BQ769x0 is designed with low power in mind: Sub-blocks within the IC may be enabled or disabled to control the overall chip current consumption, and a SHIP mode provides a simple way to put the pack into an ultra-low power state.

The BQ76920 device supports up to 5-series cells or typical 18-V packs, the BQ76930 handles up to 10-series cells or typical 36-V packs, and the BQ76940 works for up to 15-series cells or typical 48-V packs. A variety of battery chemistries may be managed with these AFEs, including Li-ion, Li-iron phosphate, and more. Through I2C, a host controller can use the BQ769x0 to implement many battery pack management functions, such as monitoring (cell voltages, pack current, pack temperatures), protection (controlling charge/discharge FETs), and balancing. Integrated A/D converters enable a purely digital readout of critical system parameters, with calibration handled in TI’s manufacturing process.
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技術文件

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類型 標題 日期
* Data sheet BQ769x0 3-Series to 15-Series Cell Battery Monitor Family for Li-Ion and Phosphate Applications datasheet (Rev. I) PDF | HTML 2022年 3月 14日
User guide bq76920, bq76930, bq76940 AFE FAQ (Rev. A) PDF | HTML 2021年 10月 1日
Technical article Protector, monitor or gauge – selecting the correct battery electronics for your L PDF | HTML 2019年 6月 13日
Application note BQ769x0 Pin Equivalent Diagrams (Rev. A) 2019年 4月 3日
User guide bq76930 and bq76940 Evaluation Module (Rev. C) 2018年 12月 10日
Application note UART-Based Communication Protocol for Intermodule Communication of Light Vehicle 2017年 5月 17日
Application note bq769x0 BMS Configurations for Cordless Appliances 2017年 3月 23日
Application note Fault Monitoring for High-Availability Systems using the bq769x0 2017年 2月 3日
Application note Embedded Scheduler in Cell Battery Monitor of the bq769x0 2016年 8月 10日
Application note bq769x0 Family Top 10 Design Considerations (Rev. A) PDF | HTML 2016年 5月 2日
Application note bq769x0 boot switch alternatives 2015年 12月 21日
Application note I2C Communication Sample Code for the bq76940 with CRC Based on the MSP430 (Rev. B) 2014年 5月 14日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

BQ76930EVM — 具有 BQ78350 的 BQ76930 評估板

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 (...)

使用指南: PDF
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韌體

SLUC583 — bq769x0 I2C Sample Code With CRC

支援產品和硬體

支援產品和硬體

產品
電池監控器和平衡器
BQ76920 — 3 至 5 串聯芯鋰電池和磷酸鐵鋰電池監控器 (bq76940 系列) BQ76930 — 6 至 10 串聯芯鋰電池和磷酸鐵鋰電池監控器 (bq76940 系列) BQ76940 — 9 至 15 串聯芯鋰電池和磷酸鐵鋰電池監控器 (bq76940 系列)
下載
支援軟體

SLUC539 — bq76940/bq76930/bq76920 Evaluation Software

支援產品和硬體

支援產品和硬體

產品
電池監控器和平衡器
BQ76920 — 3 至 5 串聯芯鋰電池和磷酸鐵鋰電池監控器 (bq76940 系列) BQ76930 — 6 至 10 串聯芯鋰電池和磷酸鐵鋰電池監控器 (bq76940 系列) BQ76940 — 9 至 15 串聯芯鋰電池和磷酸鐵鋰電池監控器 (bq76940 系列)
硬體開發
開發板
BQ76920EVM — 具有 BQ78350 的 BQ76920 評估板 BQ76930EVM — 具有 BQ78350 的 BQ76930 評估板 BQ76940EVM — 具有 BQ78350 的 BQ76940 評估板
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參考設計

TIDA-01093 — 適用於 20 節串聯電池應用的工業電池管理模組參考設計

High serial cell count battery (>15s) systems are becoming more and more common for industrial applications. These applications are cost sensitive and require a simple solution that includes monitoring, protection, and control or even SOC (State of Charge) information rather than only basic (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00449 — 10s 電池組監控、平衡和全面保護。50A 放電參考設計

This reference design is ready tested for 10 cells in series battery pack monitoring, balancing and protection for power tools. Power tools increasingly use highly power-dense Li-Ion or Li-Iron phosphate cells based battery packs that need to be protected from explosion due to incorrect charging or (...)
Design guide: PDF
電路圖: PDF
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