TIDA-020008

Automotive power seat reference design

TIDA-020008

Design files

Overview

This reference design provides the drive and control circuits for motor-driven applications such as automotive power seats, using both bi-directional and unidirectional motor drives. It demonstrates how to drive brushed DC motors with a small board footprint, a high degree of robustness and full diagnostic features. The design illustrates solutions for adding motor-driven comfort and convenience options, as well as replacing relay-based circuits with smarter full-featured devices.

Features
  • Bi-directional drive for brushed DC motors - 30-A peak with external FETs and 10-A peak with integrated FETs
  • Unidirectional drive for lumbar pump and valve
  • Multiplexed current sense signals from all motors
  • Reverse battery and load dump protection
  • Small board footprint for each drive circuit

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.

TIDUED3.PDF (5844 K)

Reference design overview and verified performance test data

TIDRXF5.PDF (224 K)

Detailed schematic diagram for design layout and components

TIDRXF6.PDF (62 K)

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

TIDRXF7.PDF (225 K)

Detailed overview of design layout for component placement

TIDRXF9.ZIP (2000 K)

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

TIDCEY9.ZIP (461 K)

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

TIDRXF8.PDF (1188 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Analog switches & muxes

SN74LV4051A-Q1Automotive 5-V, 8:1, 1-channel general-purpose analog multiplexer

Data sheet document-pdfAcrobat PDF open-in-new HTML
Brushed DC (BDC) motor drivers

DRV8703-Q1Automotive 47-V H-bridge smart gate driver with SPI control

Data sheet document-pdfAcrobat PDF open-in-new HTML
Brushed DC (BDC) motor drivers

DRV8873-Q1Automotive 40-V, 10-A H-bridge motor driver with integrated current sensing & feedback

Data sheet document-pdfAcrobat PDF open-in-new HTML
CAN & LIN transceivers & SBCs

TLIN1029-Q1Local interconnect network (LIN) transceiver with dominant state timeout

Data sheet document-pdfAcrobat PDF open-in-new HTML
High-side switches

TPS2H160-Q140-V, 160-mΩ, 2-ch automotive smart high-side switch with adjustable current limit

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS7B82-Q1Automotive 300-mA, off-battery (40-V), ultra-low-IQ LDO with enable in AEC-Q100 Grade-0 and Grade-1

Data sheet document-pdfAcrobat PDF open-in-new HTML
Load switches

TPS22810-Q11-ch, 18-V, 3-A, 79-mΩ automotive load swich with adj. rise time and adj. output discharge<

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
* Design guide Automotive Power Seat Reference Design Nov. 01, 2018

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