Automotive power seat reference design
TIDA-020008
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Key Document
Description
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
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Schematic/Block Diagram
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Design Guide
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TI Devices (7)
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| Sample & Buy |
Design Kits & Evaluation Modules |
| DRV8703-Q1 |
Automotive 45-V H-bridge smart gate driver with SPI control |
Motor drivers |
Sample & Buy |
View Design Kits & Evaluation Modules |
| DRV8873-Q1 |
Automotive 38-V, 10-A H-bridge motor driver with integrated current sensing & current sense feedback |
Motor drivers |
Sample & Buy |
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| SN74LV4051A-Q1 |
Automotive 5-V, 8:1, 1-channel general-purpose analog multiplexer |
Switches & multiplexers |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TLIN1029-Q1 |
Local interconnect network (LIN) transceiver with dominant state timeout |
Interface |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TPS22810-Q1 |
18-V, 3-A, 79-mΩ automotive load swich with adj. rise time and adj. output discharge |
Power switches |
Sample & Buy |
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| TPS2H160-Q1 |
40-V, 160-mΩ, 2-ch automotive smart high-side switch with adjustable current limit |
Power switches |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TPS7B82-Q1 |
Automotive 300-mA, off-battery (40-V), ultra-low-IQ, low-dropout voltage regulator with enable |
Power management |
Sample & Buy |
View Design Kits & Evaluation Modules |
CAD/CAE symbols
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Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at https://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
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Technical documentation
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User guide (1)
| Title | Type | Size (KB) | Date |
| | PDF | 5844 |
01 Nov 2018
|
Design files (6)
| | ZIP | 461 |
01 Nov 2018
|
| | ZIP | 2000 |
01 Nov 2018
|
| | PDF | 1188 |
01 Nov 2018
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| | PDF | 225 |
01 Nov 2018
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| | PDF | 62 |
01 Nov 2018
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| | PDF | 224 |
01 Nov 2018
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