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The MC33779ATA1AE chip is a battery management chip launched by NXP, mainly used in the automotive electronics field, supporting application scenarios such as hybrid electric vehicles (HEV), pure electric vehicles (EV), and industrial energy storage systems (ESS). It has the following key features:

Current measurement

4 current measurement inputs (supporting 2 ASIL D current measurements) :

Each input has one precision ADC (27-bit, 1kHz).

Each input has one fast ADC (16-bit, 125kHz).

Support Hall sensor measurement (5V range)

The shunt temperature drift compensation is carried out by using an external temperature sensor

One Coulomb counter per channel

Overcurrent detection (threshold, di/dt calculation, fuse blow simulation)

Supports switchable architecture (2 x 400V/800V), and can calculate the current between battery packs in real time

General measurement

16 measurement inputs, supporting up to 8 redundant measurements (16 bits, 1kHz)

Overvoltage and undervoltage detection

Multiplexing, with 2 x 8 GPIO

Event Manager

Input event sets from other modules (overcurrent detection, fuse simulation, overvoltage detection and digital input)

Configurable logical processing of events (such as debouncing, OR, and custom logic functions)

Trigger response (fireworks switch controller, MCU wake-up and GPIO)

Firework switch Controller (PSC)

Two independent controllers, including the drive stage

Conforms to the AK-LV 16 (2012-07) standard

The driving capability of each controller is 1.2A/2ms or 1.75A/0.5ms

The event manager triggers instantly without the need for MCU processing

Extensive diagnostic functions (capacitor measurement, ESR measurement and igniter measurement)

MCU interface, supporting isolated Daisy chain protocol TPL3:

TPL3 (2Mbit, 62 nodes, transformer or capacitor isolation)

Power management

The pyrotechnic switch power supply is directly powered by voltage

Redundant analog power supply

The SPI controller interface and the I2C controller interface are used to control peripheral devices

Wake-up support (via communication, GPIO or internal events)

Support ASIL D safety goals through redundant measurement, redundant signal processing and redundant pyrotechnic switch controllers

Heat dissipation enhanced LQFP64-EP package, pin pitch 0.5mm

Complies with the AEC-Q100 Level 1 standard

Application field

The MC33779ATA1AE is applicable to the following fields:

Automobile

Battery Management System (BMS

Hybrid electric Vehicle (HEV

Industry

Energy Storage System (ESS

Electric Vehicle power supply Equipment (EVSE

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