Valve Control

In EV thermal management and heat pump systems, managing the flow of coolant or refrigerant is required for optimal performance, and this is achieved with the help of precise valve control. These valves, including on/off, 2 way, or multi-way types, operate through both rotary and linear motions. They ensure appropriate temperature conditions across key components like the cabin, compressor, power electronics, and battery, directing the coolant or refrigerant, thus enabling efficient thermal regulation and energy conservation. 

Allegro offers precision control with our half-bridge DC and stepper motor controls. These are highly integrated into a compact, thermally efficient package, designed to simplify applications in limited PCB areas. We also provide 2D and 3D sensors that accurately determine the valve position, effectively supporting both smart and standard actuators for an optimized thermal management system.

Valve Control Application Diagram featuring DC/DC Regulators, Stepper Motor Drivers and Position Sensors
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    DC/DC Regulator ICs

    ARG81800 – 1A, Synchronous Rectified Buck DC/DC
    APM81803 – 3A, Synchronous Buck Regulator Module
    APM81911 – 3A, Synchronous Buck Regulator Module
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    DC/Stepper Motor Driver

    A5950 – Integrated H-Bridge DC Motor Driver
    A4980 – Integrated Micro Stepping Motor Driver
    AMT49700 – Integrated Micro Stepping Motor Driver
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    Position Sensor

    A31315 – 3D Magnetic Hall-Effect Sensor IC
    A31316 – 3D Magnetic Hall-Effect Sensor IC
    A33230 – 3D Sine/Cosine Sensor
    A1330 – 360 Degree High Resolution Angle Sensor IC

    A position sensor may not be required when a stepper motor is used.