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
