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TI 公司的bq76PL536-Q1是 3-6組鋰離子電池監視器和二級保護集成電路，器件集成了高精度ADC，精度達±1 mV，14位分辨率，6us轉換時間，具有熱插入和高速SPI數據通信，主要用于電動汽車和混合動力汽車，電動自行車，UPS和大容量電池系統。本文介紹了bq76PL536-Q1主要特性，方框圖，參考應用電路以及bq76PL536-3評估模塊特性，單電源和三個電源連接圖與bq76PL536系統應用框圖。 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應用： Electric and Hybrid Electric Vehicles E-Bike and E-Scooter Uninterruptible Power Systems (UPS) Large-Format Battery Systems 
圖1。bq76PL536-Q1 方框圖
圖2。bq76PL536-Q1 簡化系統連接框圖
圖3。bq76PL536-Q1 參考應用電路（1）
圖4。bq76PL536-Q1 參考應用電路（2）
圖5。bq76PL536-Q1 參考應用電路（3）
圖6。bq76PL536-Q1 參考應用電路（4） bq76PL536-3評估模塊 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.
圖7。bq76PL536-3評估模塊外形圖
圖8。bq76PL536-3評估模塊三個~20V電源連接圖
圖9。bq76PL536-3評估模塊單個54V電源連接圖
圖10。bq76PL536系統應用框圖 詳情請見： http://focus.ti.com/lit/ds/symlink/bq76pl536-q1.pdf 和 http://focus.ti.com/lit/ug/sluu437a/sluu437a.pdf |
