Automatic transmission

Products and reference designs

Automatic transmission

Block diagram

Overview

Our integrated circuits and reference designs will help you create automatic transmission designs that improve vehicle handling, fuel efficiency and torque control through precise control of gear shifts and axles.

Design requirements

Automatic transmission designs require:

  • Robust and safe solenoid and BLDC gate drivers that enable reliable and high performance operation.
  • High-accuracy position sensing for motor and solenoid position sensors.
  • Following state-of-the-art architecture regarding system redundancy in order to allow implementation of the system at the highest safety level.

Block diagram

Find products and reference designs for your system.

Dual clutch transmission (DCT)

Input shaft speed Input shaft speed Output shaft speed Output shaft speed ATF sensor ATF sensor Vehicle speed sensor Vehicle speed sensor Hydraulic pressure sensor Hydraulic pressure sensor Brake pedal position sensor Brake pedal position sensor Clutch pressure sensor Clutch pressure sensor 12V / 48V battery 12V / 48V battery Input protection Input protection Reverse polarity & overvoltage protection Reverse polarity & overvoltage protection PRDNL switches PRDNL switches Hall sensor Hall sensor 1st Clutch 1st Clutch 2nd Clutch 2nd Clutch Even gear Even gear Odd gear Odd gear Digital processing Digital processing MCU MCU MUX MUX MUX MUX Temperature sensor Temperature sensor Sense element Sense element AMP AMP Wired interface Wired interface CAN CAN LIN LIN SBC SBC Protection Protection DC/DC DC/DC Safety logic Safety logic LDOs LDOs Linear regulator Linear regulator Tracking LDO Tracking LDO Power stage Power stage FETs FETs BLDC gate driver BLDC gate driver Current sense Current sense ADC ADC REF REF Motor position sensor Motor position sensor Hall / inductive sensors Hall / inductive sensors MCU diagnostics/monitoring MCU diagnostics/monitoring Voltage supervisor Voltage supervisor Voltage reference Voltage reference Watchdog Watchdog

Technical documentation

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Type Title Date
White paper 半導體如何提升汽車燃燒引擎效率 31 Jan 2020
White paper Bridging 12 V and 48 V in dual-battery automotive systems 21 Nov 2018
Technical article What are the advantages of an automotive temperature sensor IC compared to an NTC? PDF | HTML 15 Jun 2023
White paper Driving the green revolution in transportation 03 Oct 2016

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