BQ76PL455APFCT

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1. Describe

The BQ76PL455APFCT device is an integrated 16-cell battery monitoring and protection device designed for high reliability, high voltage industrial applications. The integrated high-speed, differential, capacitively isolated communication interface allows up to 16 BQ76PL455APFCT devices to communicate with a host through a single high-speed Universal Asynchronous Receiver/Transmitter (UART) interface. The BQ76PL455APFCT monitors and detects a number of different fault conditions, including: overvoltage, undervoltage, overtemperature, and communication failure. Includes six GPIO ports and eight analog AUX ADC inputs for additional monitoring and programmable functions. Secondary thermal shutdown includes further protection. The bq76PL455A has features that customers can use to help them meet functional safety standards. Refer to Safety Manual BQ76PL455APFCT (SLUUB67).

2. Feature

    1. Monitor and balance 6 to 16 cells per device

    2. High precision monitoring

        – High-performance 14-bit analog-to-digital converter (ADC) with internal reference

        – All cells are converted in 2.4ms (nominal)

        – 8 AUX inputs for temperature and other sensors with input voltage from 0 V to 5 V

        – Internal accuracy reference

    3. Integrated protector with independent Vref and programmable VCELL set points for overvoltage (OV) and undervoltage (UV) comparators

    4. Designed for high system robustness

        – Stackable isolated differential UART up to 1-Mb/s

        – Up to 16 daisy-chained ICs with twisted pairs

        – Passes the bulk current injection (BCI) test

        – Designed for robust hot-swap performance

    5. Passive balancing with external n-FETs, active balancing with EMB1428Q/EMB1499Q

3. Application

    1. Energy Storage (ESS) and UPS

    2. Electric bicycles, electric scooters

4. Pin configuration