BQ79731-Q1
- AEC-Q100 qualified –40°C to +125°C
- Functional safety - compliant targeted
- Documentation to aid ISO 26262 system design
- Systematic capability up to ASIL D targeted
- Hardware capability up to ASIL D targeted
- 17 single-ended voltage channels
- High voltage pack, link, charge measurement accuracy <0.2%
- Pack and cell VI sync to 64uS
- 2 independent current sense ADCs (BQ79731-Q1)
- ±0.05% gain error drift
- Input range = ±275 mV
- 2 Over current detect comparators (BQ79731-Q1)
- ±1% accuracy
- Selectable bi-directional thresholds
- Programmable OC
- Integrated Coulomb counting (BQ79731-Q1)
- 15 GPIO inputs as IO, I2C, SPI, ADC and temp sense
- Dedicated MOSFET switch drive pins
- Intelligent SPI contoller HUB
- Support multiple SPI peripheral devices
- HW pin to trigger contactor drivers and Pyro Fuse drivers
- Stackable and register map compatible with with cell monitors like the 18S (BQ79718)
The device can be used to measure divided down high voltage nodes in a battery system. It can measure voltage across Fuse, Contactors and check isolation voltage in battery junction box (BJB) system. The device has two integrated current sense (BQ79731-Q1) paths supporting low side shunt resistor. Coulomb counting (BQ79731-Q1) function is available for accurate SOC calculation. There are 15 GPIOs/auxiliary inputs that can be used for HV measurements, thermistor measurements and driving relays. There are 4 SW outputs that can be used to drive MOSFET switches in the measurement path. The device can function as a SPI HUB and interface with upto 8 separate SPI devices/groups. Over current protection response can be achieved autonomously using HW Pins for fast protection in dangerous over current events. The isolated bi-directional daisy chain ports support both capacitor and transformer based isolation. The device can also communicate with MCU over SPI.
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技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ79731-Q1 UIR Sensor with Voltage, Current and Insulation Resistance Monitoring in EV/BMS HV Automotive Applications datasheet | PDF | HTML | 2022年 12月 19日 |
| White paper | 設計更安全、更智慧且更緊密相連的電池管理系統 | PDF | HTML | 2024年 1月 24日 | |
| Technical article | How solid-state relays simplify insulation monitoring designs in high-voltage applications | PDF | HTML | 2024年 1月 4日 | |
| Application brief | Scaling accurate battery management designs across energy storage systems | PDF | HTML | 2023年 10月 20日 | |
| Technical article | How to design an intelligent battery junction box for advanced EV battery manageme | PDF | HTML | 2023年 1月 4日 | |
| White paper | 電池管理系統創新如何提升 EV 採用率 | PDF | HTML | 2022年 12月 13日 | |
| Certificate | BQ79731Q1EVM EU RoHS Declaration of Conformity (DoC) (Rev. A) | 2022年 11月 3日 | ||
| Technical article | Intelligent junction box with voltage and current synchronization in EVs | PDF | HTML | 2022年 4月 8日 |
設計與開發
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BQ79731Q1EVM-060 — 適用於堆疊式電壓、電流和絕緣電阻監控器的 BQ79731-Q1 評估模組
BQ79731Q1EVM 評估模組 (EVM) 也稱為 BMS060，說明 BQ7973x-Q1 的一般功能、操作理論、硬體設定與使用。這些高度整合的電壓、電流和絕緣電阻監控裝置主要應用在具備進階診斷功能和多種通訊協定的電池接線盒 (BJB) 汽車應用。
BMS060 評估板可在含大型鋰離子電池組應用的系統中判斷潛在裝置使用，以提供監控、系統保護和菊輪鍊通訊。
| 封裝 | 引腳 | 下載 |
|---|---|---|
| HTQFP (PHP) | 48 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。