BQ76PL455ATPFCTQ1

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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