BQ76PL536APAPR

3至6节锂离子电池监控器和二级保护IC的应用 3 to 6 Series Cell Lithium-Ion Battery Monitor and Secondary Protection IC for Applications

Description

The bq76PL536A device is a stackable battery monitor and protector for three-to-six lithium-ion cells in series. The bq76PL536A integrates an analog front end AFE along with a precision analog-to-digital converter ADC, used to precisely measure battery cell voltages. A separate ADC is used to measure temperature.

In addition to temperature measurement, overvoltage and undervoltage are monitored per channel for protection. Non-volatile memory stores the user programmable protection thresholds and delay times. A FAULT output signals whenever one of these thresholds is exceeded.

Cell stacks of 192 cells can be supported by stacked bq76PL536A devices. A high-speed SPI interface connects all devices.

Features

• 3-to-6 Series Cell Support, All Chemistries

• Hot-Pluggable

• High-Speed Serial Peripheral Interface SPI for Data Communications

• Stackable Vertical Interface

• Isolation Components not Required Between Devices

• Industrial Temperature Range –40°C to 85°C

• 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 Error Check/Correct ECC-One-Time-Programmable OTP Registers

• Built-In Comparators Secondary Protector for:

   – Overvoltage 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

• Supply Voltage Range from 6 V to 30 V Continuous and 36-V Peak

• Low Power:

   – Typical 12-µA Sleep, 45-µA Idle

• Integrated Precision 5-V, 3-mA LDO

Applications

• Uninterruptible Power Systems UPS

• E-Bike and E-Scooter

• Large-Format Battery Systems