TI bq76PL455A－Q1高可靠汽车电池监测和保护方案

TI公司的bq76PL455A-Q1是16路高可靠汽车电池监测和保护方案,集成了高速差分电容隔离通信接口,高性能14位ADC,用于温度和其它传感器的八路输入复接器,精密基准电压.本文介绍了bq76PL455A-Q1主要特性,框图,数字和模拟芯片部分功能框图,应用电路框图,以及bq76PL455EVM评估模块主要特性和电特性,电路图和材料清单.
The bq76PL455A-Q1 device is an integrated 16-cell battery monitoring and protection device, designed for high-reliability automotive applications. The integrated high-speed, differential, capacitor-isolated communications interface allows up to sixteen bq76PL455A-Q1 devices to communicate with a host via a single high-speed Universal Asynchronous Receiver/Transmitter (UART) interface.
The bq76PL455A-Q1 monitors and detects several different fault conditions, including: overvoltage, undervoltage, overtemperature, and communication faults. Six GPIO ports as well as eight analog AUX ADC inputs are included for additional monitoring and programmable functionality. A secondary thermal shutdown is included for further protection.
The bq76PL455A-Q1 has features that customers may find useful to help them meet functional safety standard requirements (for example, ISO26262).
bq76PL455A-Q1主要特性:
Monitors and Balances 6-to-16 Cells per Device
Highly Accurate Monitoring
High Performance 14-bit Analog-to-Digital Converter (ADC) With Internal Reference
All Cells Converted in 2.4 ms (Nominal)
Eight AUX Inputs for Temperature and Other Sensors with Input Voltage of 0 V to 5 V
Internal Precision Reference
Integrated Protector With Separate Vref for Overvoltage (OV) and Undervoltage (UV) Comparators and Programmable VCELL Set Points
Engineered for High System Robustness
Up to 1-Mb/s Stackable Isolated Differential- UART
Up to 16 ICs in Daisy-Chain With Twisted Pair
Passes Bulk Current Injection (BCI) Test
Designed for Robust Hot-Plug Performance
Passive Balancing with External n-FETs and Active Balancing with EMB1428Q/EMB1499Q<...