Automotive Brushed-Motor Ripple Counter Reference Design for Sensorless Position Measurement

(ACTIVE) TIDA-01421

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Key Document

Description

The demand to retain memory on the position of the seat, window, sliding door, mirror, lift-gate, and others driven by that motor has increased as small motors within the modern automotive vehicle continue to evolve. Existing solutions utilize multiple magnetic sensors attached to the body of a motor to provide a feedback loop to the motor control module. A sensorless approach provides redundancy for existing solutions and, in some cases, removes the requirement for motors with sensors attached. The sensorless approach has become increasingly popular through the implementation of an in-line, current-sense signal-conditioning circuit. This reference design provides a solution that is easily modifiable for many automotive motor systems that control position measurement.

Features
  • Configurable for many DC motor solutions
  • -14V to 80V wide common mode input range for in-line motor current sensing
  • Operational for typical 9V to 18V battery supply
  • Simple interfacing with MSP430™ LaunchPad™ Development Kit for digital capture

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TI Devices (4)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA282-Q1  Automotive, 80V, Bi-Directional, High Accuracy, Low-/High-Side, Voltage Out Current Shunt Monitor  Current Sense Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LMV7275-Q1  Automotive, Single 1.8V Low Power Comparators with Rail-to-Rail Input  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TLV2316-Q1  10-MHz, Rail-to-Rail Input/Output, Low-Voltage, 1.8-V CMOS Operational Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS7B69-Q1  Automotive High-Voltage Ultralow-IQ Low-Dropout Regulator  Linear Regulator (LDO)  Sample & Buy Not Available

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 5862 13 Jun 2017 915
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 356 30 Jun 2017 30
ZIP 623 30 Jun 2017 99
PDF 624 30 Jun 2017 104
PDF 113 30 Jun 2017 92
PDF 65 30 Jun 2017 118
PDF 237 30 Jun 2017 538
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
Automotive 2-Axis Power Seat Brushed DC Motor Drive Reference Design  TIDA-01330  TI Designs

Design Kits & Evaluation Modules (1)

Name Part Number Tool Type
MSP430FR6989 LaunchPad Development Kit  MSP-EXP430FR6989  Evaluation Modules & Boards 


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