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電池管理 IC
電池監控器和平衡器

BQ76942

現行

3 串聯至 10 串聯多芯電池監控器和保護器

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產品規格表
使用指南

BQ76942

現行
產品規格表 立即訂購

產品詳細資料

Number of series cells (min) 3 Vin (max) (V) 55 Features Digital output, High-side driver, I2C support, Integrated ADC, LDO output, Multi-cell support, One-time-programmable (OTP) memory, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Scratchpad memory, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection 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) 1 Battery overvoltage protection (max) (V) 5.5 Communication interface HDQ, I2C, SPI Operating current (typ) (µA) 250
Number of series cells (min) 3 Vin (max) (V) 55 Features Digital output, High-side driver, I2C support, Integrated ADC, LDO output, Multi-cell support, One-time-programmable (OTP) memory, Open-wire detection, Overcurrent in charging protection, Overcurrent in discharging protection, Overtemperature protection, Overvoltage protection, Scratchpad memory, Short-current detection, Temperature sensing, Undertemperature protection, Undervoltage protection 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) 1 Battery overvoltage protection (max) (V) 5.5 Communication interface HDQ, I2C, SPI Operating current (typ) (µA) 250
TQFP (PFB) 48 81 mm² 9 x 9
  • Battery monitoring capability for 3-series to 10-series cells
  • 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)
  • Wide-range current applications (±200-mV measurement range across sense resistor)
  • Integrated secondary chemical fuse drive protection
  • Autonomous or host-controlled cell balancing
  • Multiple power modes (typical battery pack operating range conditions)
    • NORMAL mode: 286 µA
    • Multiple SLEEP mode options: 24 µA to 41 µA
    • Multiple DEEPSLEEP mode options: 9 µA to 10 µA
    • SHUTDOWN Mode: 1 µA
  • High-voltage tolerance of 85 V on cell connect and select additional pins
  • Tolerant of random cell attach sequence on production line
  • Support for temperature sensing using internal sensor and up to nine external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400-kHz I2C, SPI, and HDQ one-wire interface
  • Dual programmable LDOs for external system usage
  • 48-pin TQFP package (PFB)
  • Battery monitoring capability for 3-series to 10-series cells
  • 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)
  • Wide-range current applications (±200-mV measurement range across sense resistor)
  • Integrated secondary chemical fuse drive protection
  • Autonomous or host-controlled cell balancing
  • Multiple power modes (typical battery pack operating range conditions)
    • NORMAL mode: 286 µA
    • Multiple SLEEP mode options: 24 µA to 41 µA
    • Multiple DEEPSLEEP mode options: 9 µA to 10 µA
    • SHUTDOWN Mode: 1 µA
  • High-voltage tolerance of 85 V on cell connect and select additional pins
  • Tolerant of random cell attach sequence on production line
  • Support for temperature sensing using internal sensor and up to nine external thermistors
  • Integrated one-time-programmable (OTP) memory programmable by customers on production line
  • Communication options include 400-kHz I2C, SPI, and HDQ one-wire interface
  • Dual programmable LDOs for external system usage
  • 48-pin TQFP package (PFB)

The Texas Instruments BQ76942 is a highly integrated, high accuracy battery monitor and protector for 3-series to 10-series Li-ion, Li-polymer, and LiFePO‌‌‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍4 battery packs. The device includes a high-accuracy monitoring system, a highly configurable protection subsystem, and support for autonomous or host-controlled cell balancing. Integration includes high-side charge-pump NFET drivers, dual programmable LDOs for external system use, and a host communication peripheral supporting 400-kHz I2C, SPI, and HDQ one-wire standards. The BQ76942 is available in a 48-pin TQFP package.

The Texas Instruments BQ76942 is a highly integrated, high accuracy battery monitor and protector for 3-series to 10-series Li-ion, Li-polymer, and LiFePO‌‌‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍4 battery packs. The device includes a high-accuracy monitoring system, a highly configurable protection subsystem, and support for autonomous or host-controlled cell balancing. Integration includes high-side charge-pump NFET drivers, dual programmable LDOs for external system use, and a host communication peripheral supporting 400-kHz I2C, SPI, and HDQ one-wire standards. The BQ76942 is available in a 48-pin TQFP package.
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BQ76952 現行 適用於鋰離子、鋰聚合物和磷酸鐵鋰的 3-s 至 16-s 高準確度電池監控器和保護器 Same features as BQ76942, but optimized for up to 16s battery packs

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類型 標題 日期
* Data sheet BQ76942 3-Series to 10-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li- Polymer, and LiFePO4 Battery Packs datasheet (Rev. B) PDF | HTML 2021年 12月 2日
* User guide BQ76942 Technical Reference Manual (Rev. B) PDF | HTML 2022年 5月 11日
Application note Design Considerations of Stacked BQ769x2 With High-Side N-MOSFET PDF | HTML 2023年 2月 9日
Application note Using Low-Side FETs with the BQ769x2 Battery Monitor Family (Rev. A) PDF | HTML 2022年 2月 24日
Application note Cell Balancing With BQ769x2 Battery Monitors (Rev. A) PDF | HTML 2022年 2月 15日
Application note Multiple FETs with the BQ76952, BQ76942 Battery Monitors (Rev. A) 2021年 12月 3日
Application note BQ769x2 Software Development Guide (Rev. B) PDF | HTML 2021年 8月 26日
Application note BQ769x2 Calibration and OTP Programming Guide (Rev. A) PDF | HTML 2021年 8月 6日
Application note Pin Equivalent Diagrams for the BQ76952, BQ76942, and BQ769142 2021年 5月 6日
Technical article How to stack battery monitors for high-cell-count industrial applications PDF | HTML 2021年 2月 11日
Application note BQ76942 IEC ESD 61000-4-2 ESD Test Report 2020年 11月 16日
Application note Easy Configuration of BQ76942/52 Battery Monitors (Rev. A) 2020年 10月 1日
Technical article CURRENTly questioning the accuracy of your battery monitor? Improve battery safety PDF | HTML 2020年 5月 28日
Technical article Improving voltage measurement accuracy in battery monitoring systems PDF | HTML 2020年 4月 1日
Technical article Improving temperature measurement accuracy in battery monitoring systems PDF | HTML 2020年 2月 20日
Application note Parallel Paths with the BQ769x2 Battery Monitor 2020年 1月 9日
Technical article Next-generation battery monitors: how to improve battery safety while improving ac PDF | HTML 2020年 1月 6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

BQ76942EVM — 3 系列至 10 系列鋰離子、鋰聚合物和 LiFePO4 電池監測器和保護器 EVM

The BQ76942EVM evaluation module (EVM) is a complete evaluation system for the BQ76942, a 3-cell to 10-cell Li-Ion battery monitor integrated circuit. The EVM consists of a BQ76942 circuit module which is used for simple evaluation of the BQ76942 monitor function. The circuit module includes one (...)

使用指南: PDF
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應用軟體及架構

BQ769X2-THERMISTOR-COEFF-CALCULATOR — BQ76952/42 thermistor temperature optimizer - calculate the thermistors coefficients for T range

The BQ769x2 family of battery monitors can support multiple external thermistors. The device includes an internal pullup resistor to bias the thermistor during measurement. The internal pullup resistor has two options which can set the pullup to 18 kΩ or 180 kΩ. The 18-kΩ option (...)
使用指南: PDF | HTML
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應用軟體及架構

BQSTUDIO-STABLE — Battery Management Studio (bqStudio) Software – stable version downloads for bq series of TI battery fuel gauges

Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)

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產品
電池監控器和平衡器
BQ76942 — 3 串聯至 10 串聯多芯電池監控器和保護器 BQ76952 — 適用於鋰離子、鋰聚合物和磷酸鐵鋰的 3-s 至 16-s 高準確度電池監控器和保護器
電池充電器 IC
BQ24800 — 支援混合動力升壓和電池升壓模式的 SMBus 1 至 4 節降壓電池充電控制器 BQ25720 — 具有電源路徑和 USB-C ® PD OTG 的 SMBus 1- 至 4- 芯 NVDC 降壓-升壓電池充電控制器 BQ25723 — 具有電源路徑和 USB-C ® PD OTG 的 I²C 1-4 芯 NVDC 降壓-升壓電池充電控制器 BQ25731 — 具有 USB type-C PD 支援的 I2C 1-5 芯 NVDC 升壓-降壓電池充電控制器 BQ25790 — 整合式 NVDC 5-A 1 至 4 芯切換模式降壓/升壓電池充電器 BQ25792 — 具備雙輸入選擇器與 USB PD 3.0 OTG 輸出的 I2C 控制、5-A、1-4 芯降壓-升壓充電器
電池電量指示
BQ27220 — 具預編程化學設定檔的單芯電池組/系統端 CEDV 電池電量 (氣量) 計 BQ27320 — 單芯電池組/系統側 CEDV 電池電量 (氣量) 計 BQ27425-G1 — 具直接電池連線的 System-side Impedance Track™; 電量計 | 電池電量計 BQ27425-G2A — LiCoO2 電池系統側 Impedance Track™; 電量計 BQ27425-G2B — 系統側 Impedance Track™; 電量計 LiMn2O4 電池 BQ27520-G4 — 具整合式 LDO 的系統側 Impedance Track™ 電量計。 BQ27530-G1 — 具直接電池連線的 System-side Impedance Track 電量 (氣量) 計 BQ27531-G1 — 適用 bq2419x 充電器控制器的電池管理單元 Impedance Track™ 電量 (氣量) 計 BQ27532-G1 — 適用於 bq2425x 充電器的電池管理裝置 Impedance Track™ 電量計 BQ27545-G1 — 單芯封裝側電量計 Impedance Track™ 電量計 BQ27546-G1 — 採用 DSBGA 封裝的單芯 Impedance Track™ 封裝側電量計 BQ27621-G1 — 具動態電壓關聯的系統側電池電量計，電池電量計 BQ27741-G1 — 含整合式保護器的電池組側 Impedance Track™(tm) 電量 (氣量) 計 BQ27742-G1 — 具整合式保護的單芯鋰離子電池電量計 | 電池氣量計 BQ27Z561 — 適用於 1 串聯的 Impedance Track™ 積體電路氣量計解決方案 BQ28Z610 — 具整合保護器且適用 1-2 系列電池組的電池電量計 BQ34110 — 具有整合式極少放電模組的多化學高芯數電池電量表 BQ34210-Q1 — 符合車用資格的單芯系統側 CEDV 電量計 BQ34Z100-G1 — 多化學 Impedance Track™ 獨立電池電量計 | 電池氣量計 BQ35100 — 非充電式電池 (鋰主電池) 和服務結束監視器的電池電量表 BQ4050 — 1-4 系列 CEDV 電池電量 (氣量) 計 BQ40Z50 — 1-4 系列鋰離子電池組管理器 | 電池燃料電量 (氣量) 計 BQ40Z50-R1 — 支援 Turbo 模式 1.0 的 1-4 系列鋰電池組管理器 BQ40Z50-R2 — 支援 Turbo 模式 2.0 的 1-4 系列鋰離子電池組管理器 BQ40Z60 — 完整多芯電池管理器 | 電池電量 (氣量) 計 BQ40Z80 — 具有 Impedance Track™ 氣量計量的 2-s 至 6-s 電池組管理器 BQ78350 — 適用 bq76940 監視器系列的配套 CEDV 電量計電池管理控制器 BQ78350-R1 — CEDV 鋰離子電量計和電池管理控制器 BQ78Z100 — 適用於 1 串聯至 2 串聯的 Impedance Track™ 電池電量 (氣量) 計
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應用軟體及架構

BQSTUDIO-TEST — Battery Management Studio (bqStudio) Software – Beta version downloads

Battery Management Studio (bqStudio) offers a full suite of robust tools to assist with the process of evaluating, designing with, configuring, testing, or otherwise utilizing TI Battery management products. This includes features that provide full access to registers and data memory including (...)

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產品
Battery monitors & balancers
BQ769142 — 3-s to 14-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4 battery BQ76942 — 3-series to 10-series multicell battery monitor and protector BQ76952 — 3-s to 16-s high-accuracy battery monitor and protector for Li-ion, Li-polymer and LiFePO4
Battery charger ICs
BQ24800 — SMBus 1-4 cell Buck battery charge controller to support hybrid power boost and battery boost mode BQ25720 — SMBus 1- to 4-cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25723 — I²C 1-4 cell NVDC buck-boost battery charge controller with power path and USB-C® PD OTG BQ25731 — I2C 1-5 cell NVDC buck-boost battery charge controller with USB type-C PD support BQ25756 — Stand-alone or I²C controlled 70-V bidirectional buck-boost charge controller with MPPT BQ25790 — Integrated, NVDC, 5-A 1-cell to 4-cell switch-mode buck-boost battery charger BQ25792 — I2C controlled, 5-A, 1-4 cell buck-boost charger with dual-input selector and USB PD 3.0 OTG output
Battery fuel gauges
BQ27220 — Single cell pack/system-side CEDV battery fuel (gas) gauge w/pre-programmed chemistry profiles BQ27320 — Single cell pack/System-side CEDV battery fuel (gas) gauge BQ27425-G1 — System-side Impedance Track™; fuel gauge with direct battery connection | gas gauge battery BQ27425-G2A — System-side Impedance Track™; fuel gauge for LiCoO2 battery BQ27425-G2B — System-side Impedance Track™; fuel gauge LiMn2O4 battery BQ27427 — 具有預編程化學及整合感測器的單芯系統端電池電量 (氣量) 計 BQ27510-G3 — System-side Impedance-Track fuel gauge that provides 32 bytes of user-programmable data Flash memory BQ27520-G4 — System side Impedance Track™ fuel gauge with integrated LDO. BQ27530-G1 — System-side Impedance-Track fuel (gas) gauge with direct battery connection BQ27531-G1 — Battery management unit Impedance Track™ fuel (gas) gauge for bq2419x charger controller BQ27532-G1 — Battery management unit Impedance Track™ fuel gauge for bq2425x charger BQ27541-G1 — Pack-side Impedance Track™ battery fuel gauge with integrated LDO BQ27541-V200 — Single cell Li-ion battery fuel gauge for battery pack Integration; FW upgrade to BQ27541 BQ27542-G1 — Single cell Impedance Track™ pack side fuel gauge with SON package BQ27545-G1 — Single cell, pack side, Impedance Track™ fuel gauge BQ27546-G1 — Single cell Impedance Track™ pack side fuel gauge with DSBGA package BQ27621-G1 — System-side fuel gauge with Dynamic Voltage Correlation, battery gas gauge BQ27741-G1 — Pack-side Impedance Track™(tm) fuel (gas) gauge with integrated protector BQ27742-G1 — Single cell Li-ion battery fuel gauge with integrated protection | battery gas gauge BQ27Z561 — Impedance Track™ integrated circuit gas gauge solution for 1-series BQ27Z746 — 具有整合式保護器的電池組側、單芯 Impedance Track™ 技術電量計 BQ28Z610 — Battery fuel gauge with integrated protector for 1-2 series packs BQ34110 — Multi-chemistry high-cell Count battery fuel gauge with integrated rarely discharged module BQ34210-Q1 — Automotive Qualified Single cell system-side CEDV fuel gauge BQ34Z100-G1 — Multi-chemistry Impedance Track™ standalone fuel gauge | battery gas gauge BQ35100 — Battery fuel gauge for non-rechargeable batteries (lithium primary) and end-of-service monitor BQ4050 — 1-4 series CEDV battery fuel (gas) gauge BQ40Z50 — 1-4 series Li-ion battery pack manager | battery fuel (gas) gauge BQ40Z50-R1 — 1-4 series Li-ion battery pack manager supporting Turbo Mode 1.0 BQ40Z50-R2 — 1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0 BQ40Z60 — Complete multi-cell battery manager | battery fuel (gas) gauge BQ40Z80 — 2-s to 6-s battery pack manager with Impedance Track™ gas gauging BQ78350 — Companion CEDV Fuel Gauge Battery Management Controller for bq76940 Monitor Family BQ78350-R1 — CEDV li-ion gas gauge and battery management controller BQ78Z100 — Impedance Track™ battery fuel (gas) gauge for 1-series to 2-series
硬體開發
MKST-3P-ALT-EV2300 — 適用 EV2300 通訊收發器的 MKS 技術替代方案
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程式碼範例或展示

SLUC701 — Microcontroller Code Examples for BQ769x2 Battery Monitors

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MSP430 微控制器
MSP430FR2355 — 具有 32-KB FRAM、運算放大器/PGA、12 位元 DAC、12 位元 ADC 的 24-MHz 105-C 整合式類比微控制器
電池監控器和平衡器
BQ76942 — 3 串聯至 10 串聯多芯電池監控器和保護器 BQ76952 — 適用於鋰離子、鋰聚合物和磷酸鐵鋰的 3-s 至 16-s 高準確度電池監控器和保護器
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參考設計

TIDA-010247 — 具堆疊式電池監控器的高壓側 N-MOSFET 控制 (高達 32s) 電池組參考設計

此參考設計為高壓側 N 通道 MOSFET 控制 (高達 32s) 電池組，且使用堆疊式 BQ769x2 電池監控器系列。此設計可監控每個電池芯電壓、電池組電流、電池芯和 MOSFET 溫度，並保護電池組，以確保安全使用。高壓側 N 通道 MOSFET 架構與最佳化驅動電路，可提供簡易的開關控制。此參考設計可實現低待機與運送模式耗電量，並可將兩組之間的電流差距最佳化。此參考設計適用於高電池芯數、高電壓及電池組應用。
Design guide: PDF
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