TIDA-020023

Automotive proportional solenoid drive with highly accurate current sensor reference design

TIDA-020023

Design files

Overview

This reference design demonstrates precise proportional solenoid drive using a simple push-pull output comparator and highly-accurate, integrated current shunt monitor. Precise and accurate control of proportional solenoids is especially necessary in the automatic transmission of a vehicle for smoother drivability. This design addresses two of the main factors that affect the precise position of a solenoid: drive and current-sense accuracy over temperature.

Features
  • Current sense accuracy of 0.5% (FSR)
  • Drive frequency and duty cycle: 1 kHz
  • Integrated shunt facilitates more accuracy over a larger dynamic range
  • Lower temperature drifts
  • Wide common mode: –4 V to 80 V
  • High-side drive, high-side solenoid monitor with enhanced PWM rejection

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUEO6A.PDF (4621 K)

Reference design overview and verified performance test data

TIDRZJ6.PDF (211 K)

Detailed schematic diagram for design layout and components

TIDRZJ7.PDF (93 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRZJ8.PDF (83 K)

Detailed overview of design layout for component placement

TIDRZK0.ZIP (2464 K)

Files used for 3D models or 2D drawings of IC components

TIDCFF5.ZIP (198 K)

Design file that contains information on physical board layer of design PCB

TIDRZJ9.PDF (345 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Comparators

TLV1805-Q1Automotive high volt comparator with push-pull output and shutdown

Data sheet: PDF | HTML
Current sense amplifiers analog output

INA25380V, bi-directional, precision current sense amp w/pwm rejection & int. shunt resistor

Data sheet: PDF | HTML
Current sense amplifiers analog output

INA253-Q1AEC-Q100, 80V, bi-directional, precision current sense amp w/pwm rejection & int. shunt resistor

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TPS709-Q1Automotive 150-mA, 30-V, ultra-low-IQ, low-dropout voltage regulator with reverse current protection

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Automotive Proportional Solenoid Drive W/ Highly-Accurate Current Sensor Ref. De (Rev. A) May 15, 2019

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