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
Download View video with transcript Video

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 (5845 KB)

Reference design overview and verified performance test data

TIDRXF7.PDF (226 KB)

Detailed overview of design layout for component placement

TIDRXF6.PDF (62 KB)

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

TIDRXF9.ZIP (2000 KB)

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

TIDCEY9.ZIP (462 KB)

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

TIDRXF8.PDF (1188 KB)

PCB layer plot file used for generating PCB design layout

TIDRXF5.PDF (224 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

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: PDF | HTML
Analog switches & muxes

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

Data sheet: PDF | HTML
Brushed DC (BDC) motor drivers

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

Data sheet: PDF | HTML
Load switches

TPS22810-Q1Automotive 1-channel, 18-V, 2-A, 79-mΩ load switch with adj. rise time and adj. output discharge

Data sheet: PDF | HTML
Brushed DC (BDC) motor drivers

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

Data sheet: PDF | HTML
LIN transceivers

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

Data sheet: PDF | HTML
High-side switches

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

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Automotive Power Seat Reference Design Nov 1, 2018

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