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Flight control unit

Products and reference designs
Block diagram

Flight control unit

Block diagram

Overview

The flight control unit operates independent of the core flight computers to serve a remote function, often one that is flight critical. Whether it is control surface actuation, sensor aggregation or ancillary system control, we offer a wide range of semiconductor solutions to improve system-level reliability in the harshest conditions.

Design requirements

Modern flight control unit systems require:

  • Robust, reliable operation.
  • Multiple communications interfaces to many avionic components.
  • Accurate analog conversion for remote sensors.

Block diagram

Find products and reference designs for your system.

Flight control unit

Analog front end Analog front end Amp Amp MUX MUX ADC ADC V Ref V Ref Temperature supervisor Temperature supervisor Temp sensor Tempsensor Comparator Comparator System power System power Processor complex Processor complex --AND / OR-- --AND / OR-- Input/output Input/output Interface Interface 28V input 28V input Sensors and actuators Sensorsandactuators Aircraft communication busses Aircraft communicationbusses Isolation Isolation Point of load (POL) power Point of load (POL) power DC/DC reg DC/DCreg LDO LDO System power rails System power rails DC/DC reg DC/DCreg Vref Vref Supply sequencing Supply sequencing Sequencer Sequencer Load switch Load switch Clocking Clocking ARINC-825 ARINC-825 CAN PHY CAN PHY RS-232 RS-232 RS-232 transceiver RS-232 transceiver LVDS LVDS LVDS driver LVDS driver Interface protection Interface protection ESD ESD TVS TVS ARINC-664 ARINC-664 Ethernet PHY/MUX Ethernet PHY/MUX RS-485 RS-485 RS-485/22 transceiver RS-485/22 transceiver I2C I2C I2C repeater I2C repeater USB USB USB controller USB controller Input power protection Input power protection TVS TVS EFuse EFuse I/O protection I/O protection ESD ESD TVS TVS Sensor front end Sensor front end Signal conditioning Signal conditioning MUX MUX Digital outputs Digital outputs Buffer Buffer Peripheral driver Peripheraldriver Amp Amp Digital processing Digital processing DSP/processor DSP/processor Memory Memory Memory termination Memory termination DDR memory DDR memory Logic Logic Redundant processing Redundant processing DSP/ processor DSP/processor

Technical documentation

View all 4
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Type Title Date
Application note AN-1057 Ten Ways to Bulletproof RS-485 Interfaces (Rev. B) 26 Apr 2013
Application note Powering Sensitive Noise ADC Designs with the TPS62913 Low-Noise Buck Converter PDF | HTML 11 May 2022
Application note Keystone Error Detection and Correction EDC ECC (Rev. A) 10 May 2022
White paper Demystifying surge protection 06 Dec 2018

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