TI 公司的bq76PL536-Q1是 3-6组锂离子电池监视器和二级保护集成电路，器件集成了高精度ADC，精度达±1 mV，14位分辨率，6us转换时间，具有热插入和高速SPI数据通信，主要用于电动汽车和混合动力汽车，电动自行车，UPS和大容量电池系统。本文介绍了bq76PL536-Q1主要特性，方框图，参考应用电路以及bq76PL536-3评估模块特性，单电源和三个电源连接图与bq76PL536系统应用框图。
3 to 6 Series Cell Lithium-Ion Battery Monitor and Secondary Protection IC for EV and HEV Applications
The bq76PL536-Q1 is a stackable three to six series cell lithium-ion battery pack protector and analog front end (AFE) that incorporates a precision analog-to-digital converter (ADC); independent cell voltage and temperature protection; cell balancing, and a precision 5-V regulator to power user circuitry.
The bq76PL536-Q1 integrates a voltage translation and precision analog-to-digital converter system to measure battery cell voltages with high accuracy and speed.
The bq76PL536-Q1 provides full protection (secondary protection) for overvoltage, undervoltage, and overtemperature conditions. When safety thresholds are exceeded, the bq76PL536-Q1 sets the FAULT output. No external components are needed to configure or enable the protection features.

bq76PL536-Q1主要特性：
3 to 6 Series Cell Support, All Chemistries
Hot-Pluggable
High-Speed SPI for Data Communications
Stackable Vertical Interface
No Isolation Components Required Between ICs
Qualified for Automotive Applications
Temperature Range –40℃ to 105℃
High-Accuracy Analog-to-Digital Converter (ADC):
±1 mV Typical Accuracy
14-Bit Resolution, 6-µs Conversion Time
Nine ADC Inputs: 6 Cell Voltages, 1 Six-Cell Brick Voltage,
2 Temperatures, 1 General-Purpose Input
Dedicated Pins for Synchronizing Measurements
Configuration Data Stored in ECC-OTP Registers
Built-In Comparators (Secondary Protector) for:
Over- and Undervoltage Protection
Overtemperature Protection
Programmable Thresholds and Delay Times
Dedicated Fault Output Signals
Cell Balancing Control Outputs With Safety Timeout
Balance Current Set by External Components

bq76PL536-Q1应用：
Electric and Hybrid Electric Vehicles
E-Bike and E-Scooter
Uninterruptible Power Systems (UPS)
Large-Format Battery Systems

图1。bq76PL536-Q1 方框图

图2。bq76PL536-Q1 简化系统连接框图

图3。bq76PL536-Q1 参考应用电路（1）

图4。bq76PL536-Q1 参考应用电路（2）


图5。bq76PL536-Q1 参考应用电路（3）


图6。bq76PL536-Q1 参考应用电路（4）

bq76PL536-3评估模块
Evaluation Module for BQ76PL536 Lithium-Ion Battery Monitor and Secondary Protection IC
The User’s Guide for bq76PL536EVM-3 covers the initial connection and installation of the Texas Instruments bq76PL536 Evaluation Module (EVM), supplied in kit form including the EVM board, the USB-SPI adapter, and connectors to make cells-to-EVM connection. It is not meant as a comprehensive guide to using the ‘536 integrated circuit and its’ features.


图7。bq76PL536-3评估模块外形图

图8。bq76PL536-3评估模块三个~20V电源连接图

图9。bq76PL536-3评估模块单个54V电源连接图

图10。bq76PL536系统应用框图