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.
Feature
- 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
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.
