BQ79718-Q1数据手册TI中文资料规格书

描述 Description

BQ79718-Q1 可对 xEV/EV 的高压电池管理系统中高达 18 节串联的电池模块提供高精度的电芯电压测量。该系列监测器在同一封装类型中提供不同的通道选项，同时提供引脚对引脚兼容性，并支持在任何平台上高度重复使用既有的软件和硬件。该器件具有非常先进的 ADC 架构/测量系统，可满足严格的汽车标准/安全要求。该器件通过变压器（或电容器）隔离菊花链，适用于 xEV 动力总成中的集中式或分布式架构。

特性 Features

• AEC-Q100 qualified with –40°C to +125°C ambient temperature range
• 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

• Measure 9-18 batteries in series per device, stackable up to 35 devices
• Dedicated ADC per cell with +/- 1mV accuracy
• Cell voltage and battery pack current measurement synchronized to 64us
• Support limp home mode with full redundancy
• Integrated post-ADC configurable digital low-pass filters
• Supports bus bar without affecting measurement accuracy
• 12 GPIOs for temp sensor/analog/digital/I2C Controller/SPI Controller
• Internal cell balancing
• Balancing at 300 mA
• user control PWM adjustment 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
• Shutdown current