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Battery Management 16-Cell Battery Monitor With Passive Cell Balancing 80-TQFP -40 to 105 IC BATT MFUNC 6-16CELL 80TQFP
1 Features
• Monitors and Balances 6-to-16 Cells per Device
• Highly Accurate Monitoring
– High Performance 14-bit Analog-to-Digital Converter (ADC) With Internal Reference
– All Cells Converted in 2.4 ms (Nominal)
– Eight AUX Inputs for Temperature and Other Sensors with Input Voltage of 0 V to 5 V – Internal Precision Reference
• Integrated Protector With Separate Vref for Overvoltage (OV) and Undervoltage (UV) Comparators and Programmable VCELL Set Points
• Engineered for High System Robustness
– Up to 1-Mb/s Stackable Isolated DifferentialUART
– Up to 16 ICs in Daisy-Chain With Twisted Pair
– Passes Bulk Current Injection (BCI) Test
– Designed for Robust Hot-Plug Performance
• Passive Balancing with External n-FETs and Active Balancing with EMB1428Q/EMB1499Q
• Can Help Customers Meet Functional Safety Standard Requirements (For Example, ISO26262)
– Built-in Self-Tests to Validate Defined Internal Functions
– Support for Open Wire Detection
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 2: –40°C to 105°C Ambient Operating Temperature Range
– Device HBM ESD Classification Level 2 – Device CDM ESD Classification Level C3
2 Applications
• Electric and Hybrid Electric Vehicles (EV, HEV, PHEV, Mild Hybrid)
• 48-V Systems (Single-Chip Solution)
• Energy Storage (ESS) and UPS
• E-Bikes, E-Scooters
3 Description
The bq76PL455A-Q1 device is an integrated 16-cell battery monitoring and protection device, designed for
high-reliability automotive applications. The integrated high-speed, differential, capacitor-isolated communications interface allows up to sixteen bq76PL455A-Q1 devices to communicate with a host via a single high-speed Universal Asynchronous Receiver/Transmitter (UART) interface.
The bq76PL455A-Q1 monitors and detects several different fault conditions, including: overvoltage, undervoltage, overtemperature, and communication faults. Six GPIO ports as well as eight analog AUX ADC inputs are included for additional monitoring and programmable functionality. A secondary thermal shutdown is included for further protection.
The bq76PL455A-Q1 has features that customers may find useful to help them meet functional safety standard requirements (for example, ISO26262). See Safety Manual for bq76PL455A-Q1 (SLUUB67).
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