Battery Junction Box Monitor IC

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Block Diagram

MC33777

MC33777A Block Diagram

Features

Current Measurement

  • Four current measurement channels (supporting two ASIL D current measurements)
  • Per channel, one precise measurement branch and one fast measurement branch
  • Shunt temperature drift compensation based on external temperature sensor
  • Overcurrent detection (threshold, di/dt calculation, melting fuse emulation)

Voltage and General-Purpose Measurements

  • 16 analog inputs supporting redundant measurements

Decision Engine Event Manager

  • Configurable decision engine to assess measurement inputs and trigger reactions
  • Set of event signals (ex: high di/dt, overcurrent, overvoltage, overtemperature...)
  • Triggering reactions (ex: Pyrotechnic Switch controller, MCU wake-up, GPIOs...)

Pyrotechnic Switch Controller

  • Two independent controllers including driver stage
  • AK-LV 16 (2012-07) compliant
  • Triggering by the decision engine event manager without MCU processing
  • Extensive set of diagnostics (diagnostic current, capacitor measurement, ESR measurement...)

Communication

  • SPI interface and I²C interface
  • MCU interface supporting SPI or TPL3

Buy/Parametrics










































































































Documentation

Quick reference to our documentation types.

1 documents

Design Files

Hardware

Quick reference to our board types.

1 hardware offering

Software

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1 software file

Note: For better experience, software downloads are recommended on desktop.

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