Automotive HVAC control reference design with HMI
TIDA-020010
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Key Document
Description
This reference design offers a cost-effective solution for a heating, ventilation, and air conditioning (HVAC) human-machine interface (HMI) application. This reference design incorporates a synchronous step-down converter, multiple channel half-bridge motor driver for brushed DC motors (BDC), multiple channel light-emitting diode (LED) driver, which sets LED light intensity according to the ambient light intensity, that is measured by the ambient light sensor, The high-side switch on this reference design drives various loads, multiple hall-sensors are used for contactless measurement of the rotary knobs, tracking voltage regulator supplies off board sensors and multiplexer is used to multiplex multiple analog sensor outputs to the microcontrollers analog to digital converter (ADC).
Features
- Withstands reverse battery protection
- Drives up to 6 BDC motors
- Automatic LED dimming based on ambient light intensity
- Contactless rotation detection for the rotary knobs
- Fully protected high-side power switch with accurate current sense
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Schematic/Block Diagram
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Design Guide
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TI Devices (8)
Order samples, get tools and find more information on the TI products in this reference design.
| Sample & Buy |
Design Kits & Evaluation Modules |
| DRV5055-Q1 |
Automotive, ratiometric linear hall effect sensor with analog output |
Magnetic sensors |
Sample & Buy |
View Design Kits & Evaluation Modules |
| DRV8912-Q1 |
Automotive, 40-V, 6-A, 12-channel half-bridge motor driver with advanced diagnostics |
Motor drivers |
Sample & Buy |
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| LMR36006-Q1 |
4.2-V to 60-V, 0.6-A ultra-small synchronous step-down converter |
Step-down (buck) regulators |
Sample & Buy |
View Design Kits & Evaluation Modules |
| OPT3001-Q1 |
Automotive digital ambient light sensor (ALS) with high-precision human-eye response |
Specialty sensors |
Sample & Buy |
View Design Kits & Evaluation Modules |
| SN74LV4051A-Q1 |
Automotive 5-V, 8:1, 1-channel general-purpose analog multiplexer |
Switches & multiplexers |
Sample & Buy |
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| TLC6C5716-Q1 |
Automotive 16 channel Full diagnostics constant current RGB LED driver |
LED drivers |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TPS1H100-Q1 |
40-V, 100-mΩ, 1-ch automotive smart high-side switch with adjustable current limit |
Power switches |
Not Available |
View Design Kits & Evaluation Modules |
| TPS7B4250-Q1 |
Automotive 50-mA, off-battery (40-V), adjustable voltage-tracking low-dropout voltage regulator |
Power management |
Sample & Buy |
View Design Kits & Evaluation Modules |
CAD/CAE symbols
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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.
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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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Data sheet (7)
| | PDF | 3369 |
11 Feb 2020
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| | PDF | 1468 |
17 Dec 2019
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20 Dec 2018
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20 Aug 2018
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23 Jul 2018
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28 Sep 2016
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| | PDF | 1970 |
28 Jan 2015
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User guide (1)
| Title | Type | Size (KB) | Date |
| | PDF | 5832 |
01 Feb 2019
|
Design files (6)
| | ZIP | 486 |
01 Feb 2019
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| | ZIP | 2300 |
01 Feb 2019
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| | PDF | 1284 |
01 Feb 2019
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| | PDF | 354 |
01 Feb 2019
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| | PDF | 56 |
01 Feb 2019
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| | PDF | 535 |
01 Feb 2019
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