The company is committed to launching a power seat solution based on the ST SPC560D40L3 Power Architecture technology, a leading electronic component distributor in the Asia-Pacific region.
ST's SPC560D family of products is designed for next-generation automotive microcontrollers and is designed for embedded applications based on Power Architecture technology. The advanced and cost-effective e200z0h host processor core family of automotive controllers is compliant with Power Architecture technology and implements an LVE (Variable Length Coding) APU (Auxiliary Processing Unit) that provides improved code density. At the same time, it runs at speeds up to 48MHz, providing high-performance, low-power processing optimization, leveraging Power Architecture development infrastructure and supporting software drivers to easily assist the user's operating system and code configuration.
At present, China's auto market is showing a rapid growth trend. According to the forecast of China Automotive Technology and Research Center, domestic sales in 2015 and 2020 will reach 25.5 million and 35 million respectively, with an average annual growth rate of around 7%. Converting differentiated automation technology into a competitive advantage has become one of the product strategies of major automakers.
During the driving process, the car seat can be adjusted at any time to allow the driver to obtain a more comfortable angle, reduce driving fatigue, improve safety and comfort. The electric seat adjustment can adjust the front and rear position, the upper and lower height and the backrest angle of the seat through the control of the motor. The more luxurious models can adjust the leg support and the lumbar support.
Figure 1 - Schematic
Figure 2 - Functional Block Diagram
Functional description
12-way adjustment of automotive power seats
Seat front and rear direction backrest forward tilting backrest seat up and down direction seat horizontal direction counterclockwise direction backrest waist up and down direction adjustment backrest waist has front and rear direction adjustmentSeat motor current detection
Car seat heating
Two sets of seat position memory function
Important feature
The controller uses a 32-bit Power Architecture-based car gauge ST L99DZ70; the seat adjustment is driven by an H-Bridge motor with an output current of 8A or 30A; the seat heating uses a high-side drive ST VN7007AH and VN7010AJ with current sensing. High-speed CAN bus transceiver with a data transmission rate of 1Mbps.
Figure 3 - Control Board
Figure 4 - Driver Board
Figure 5 - Heating Driver Board
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