Overview The NXP ® S12G automotive HVAC platform reference solution uses the scalable S12G 16-bit MCU family with MC33905, MC33932 and MC33937 analog devices to drive stepper, DC and BLDC motors and provide a feature-rich solution for automotive HVAC applications. Consists of a central control board with (HMI, a motor control board, flap and blower motors Enables basic functions of an auto HVAC using temperature, light, humidity and air quality sensing interfaces with configurable automatic climate control software algorithm to efficiently control vehicle climate Reduces overall design effort, shortens time to market and can be tailored for both 12V and 24V systems Features Three types of motor control sensorless BLDC DC stepper motor Automatic climate control Supports multiple temperature zones Ultra low power mode, can be woken up by HMI or LIN CAN bus CAN and LIN communication interfaces 3x3 matrix keypad and two encoder knob inputs 4x37 segment LCD and adjustable backlighting Sensor interfaces for temperature, light, humidity and air quality available Two logic relay interfaces to compressor defrost module Real-time clock and date display, adjustment for calendar Extensible with touch keyboard or touchscreen board Suitable for both 12 volt and 24 volt HVAC systems Block Diagram Design Resources
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