BQ78702B
- Device qualified with the following results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD classification level 2
- Device CDM ESD classification level C1
- Functional Safety-Compliant
- Documentation to aid ISO 26262 and IEC 61508 system design
- Systematic capability up to ASIL B and SIL2
- Hardware intergity up to ASIL B and SIL 2
- Measure 9 to 18 batteries in series per device, stackable up to 64 devices
- Dedicated ADC with ±3.0mV accuracy for 1-5V input (-40°C to +125°C)
- Cell voltage and battery pack current measurement synchronized to 64µs
- Support limp mode with full redundancy
- Integrated post-ADC configurable digital low-pass filters
- Supports busbar without affecting measurement accuracy
- 12 GPIOs for temp sensor/analog/digital/I2C controller/SPI controller
- Internal cell balancing
- Balancing at 300mA
- User controlled PWM adjustment cell balancing current
- Built-in balancing thermal management with automatic pause and resume control
- Robust daisy chain communication and support Ring Architecture
- Hardware reset by host simulates POR-like event without battery removal
- Support transformer and capacitive isolation
- On chip memory for one time custom programming
- Low power mode current <6µA
- Compatible with BQ79600-Q1 with SPI/UART interface
The BQ78702B provides high-accuracy cell voltage measurements for up to 18S battery modules in high-voltage battery management systems in energy storage systems. This device has a state-of-the-art ADC architecture/measurement system meeting stringent safety requirements. With the daisy-chain isolated by transformer (or capacitor), the device is designed for centralized or distributed system architectures.
技術文件
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檢視所有 1 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | BQ78702B Functional Safety-Compliant Automotive 18S Battery Monitor datasheet | PDF | HTML | 2025年 6月 23日 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTQFP (PAP) | 64 | Ultra Librarian |
訂購與品質
內含資訊：
- 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
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊：
- 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。