Today’s automotive climate systems are no longer mechanically controlled. The need for improved energy efficiency, comfort, and performance has pushed Heating, Ventilation, and Air Control (HVAC) systems to adopt more sophisticated technologies and electronics components. Multiple inputs from a variety of sensors and passenger desires require the control of different types of motors, such as stepper motors for flaps, and DC/BLDC blower fan motors. We offer a wide variety of products with the exact specifications and functions required to make HVAC control modules an integrated part of the cabin environment.

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Evaluation/Development Kits


SEC-PTC400-EVB is a complete system solution for PTC HEV/EV vehicles applications, incorporating the power train, gate drivers and auxiliary subsystems to facilitate the adoption in custom designs.

LIN ST Driver Stall SS Demonstration Evaluation Board

A single-chip micro-stepping motor driver with position controller and control/diagnostic interface.

Reference Designs

PTC IGBT Driver Reference Design

An entry point to the reference documentation of PTC heater discrete IGBT driver board evaluation platform, version 1.0.1.

Technical Documents

Automatic HVAC Air Recirculation Made Easy with Stepper Motors

A technical note highlighting system requirements and operating conditions of automatic air recirculation valves and reviewing compatibility of existing actuator types with these requirements.