TI 公司的bq76PL536-Q1是 3-6組鋰離子電池" title="鋰離子電池">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