16-Cell Battery Monitor With Passive Cell Balancing - BQ76PL455A-Q1

BQ76PL455A-Q1 (ACTIVE)

16-Cell Battery Monitor With Passive Cell Balancing

 

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. See Safety Manual for bq76PL455A-Q1 (SLUUB67).

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 Differential-UART
    • 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

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Parametrics Compare all products in Battery Monitor, Protection & Authentication Solutions

 
Function
Number of Series Cells (Min)
Number of Series Cells (Max)
Communication Interface
Features
Typical Operating Current (Typ) (uA)
Rating
Vin (Max) (V)
Pin/Package
BQ76PL455A-Q1 BQ76PL455A BQ76PL536A BQ76PL536A-Q1
Monitoring (Analog Front-End)    Monitoring (Analog Front-End)    Monitoring (Analog Front-End)    Monitoring (Analog Front-End)   
6    6    3    3   
16    16    6    6   
Differential Daisy Chain    Differential Daisy Chain    SPI    SPI   
Cell Balancing
Integrated ADC
Programmable EEPROM or EPROM
Requires separate MCU
Stackable (built-in interface)
Over-temperature (OT)
Over-voltage (OV)
Under-voltage (UV)   
Cell Balancing
Integrated ADC
Programmable EEPROM or EPROM
Requires separate MCU
Stackable (built-in interface)
Over-temperature (OT)
Over-voltage (OV)
Under-voltage (UV)   
Cell Balancing
Integrated ADC
Programmable EEPROM or EPROM
Requires separate MCU
Stackable (built-in interface)
Over-temperature (OT)
Over-voltage (OV)
Under-voltage (UV)   
Cell Balancing
Integrated ADC
Programmable EEPROM or EPROM
Requires separate MCU
Stackable (built-in interface)
Over-temperature (OT)
Over-voltage (OV)
Under-voltage (UV)   
5000    5000    45    45   
Automotive    Catalog    Catalog    Automotive   
79.2    79.2    27    27   
80TQFP    80TQFP    64HTQFP    64HTQFP   

Other qualified versions of BQ76PL455A-Q1

Version Part Number Definition
Catalog BQ76PL455A TI's standard catalog product