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Heating, Ventilation & Air Conditioning

Heating, Ventilation and Air Conditioners have steadily become more common in the household as they become smaller, yet more powerful, quieter, smarter, and more energy-efficient.  With Allegro's lines in current sensors, regulators and QuietMotion Motor Driver devices, a design solution is easily at hand.

Select a subsystem below to view related products. 

HVAC Diagram
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    DC-DC Regulators

    A81800 – 1A Sync Buck Regulator

    A8586 – 3.5A Buck Regulator

    A8587 – 2A Non-Sync Buck Regulator


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    Lighting

    A6217 – 3A Buck Reg LED Driver

    ALT80802 – 2A Buck-Buck/Boost LED Driver

    APS13568 – LED Driver with Hall-effect Switch

     

    Close
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    AC/DC Power Management and Monitoring

    ACS37800 - Power Monitoring and Fault Sensor

    ACS730 – High Bandwidth Current Sensor

    ACS724 – 0A-50A Current Sensor

    Close
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    Heat Exchanger Fan Control

    ACS71240 – Phase Current Sensor IC

    A5931 / A5932 – Three-Phase Sensorless Sinusoidal Fan Controller

    AMT49400 – Integrated Sensorless FOC BLDC Driver

    A89301 – Code-Free FOC Sensorless BLDC Motor Controller

    A89306 – Code-Free FOC Sensorless BLDC Motor Driver

    Close
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    Compressor Motor Control

    APS13290 – High ESD Hall-effect Latch
    A1250 – High Sensitivity Commutation Sensor
    ACS71240 – Isolated Current and Fault Sensor
    ACS37002 – Robust Non-Ratiometric Current Sensor
     
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    Gas and Water Valve Control

    A3211 – Low Power Hall-effect Switch

    APS13295 – High ESD Hall-effect Switch

     
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    Isolation and Over-Current Protection

    ACS71240 – 0A-50A Current + Fault Sensor
    ACS37002 – 0-80A Current + Fault Sensor

     

     
    Close
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    DC-DC Regulators

    ARG81800 – 1A Sync Buck Regulator
    A8586 –  3.5A Buck Regulator
    A8587 – 2A Non-Sync Buck Regulator
    Close
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    Lighting

    A6217 – 3A Buck Reg LED Driver

    ALT80802 – 2A Buck-Buck/Boost LED Driver

    APS13568 – LED Driver with Hall-effect Switch

     

    Close
  • More

    AC/DC Power Management and Monitoring

    ACS71240 – 0A-50A Current + Fault Sensor
    ACS730 – High Bandwidth Current Sensor
    ACS37002 – 0A-80A Current + Fault Sensor
     Close
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    AC and DC Fan Control

    APS13290 – High ESD Hall-effect Latch
    A1250 – High Sensitivity Commutation Sensor
    ACS71240 – Phase Current Sensor IC
    AMT49400 – Integrated Sensorless FOC BLDC Driver
    AMT49406– Code-Free FOC Sensorless BLDC Motor Controller
    A89301 – Code-Free FOC Sensorless BLDC Motor Controller
    A89306 – Code-Free FOC Sensorless BLDC Motor Driver
    Close
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    Drain Pump

    APS13290 – High ESD Hall-effect Latch
    A1250 – High Sensitivity Commutation Sensor
    ACS71240 – Phase Current Sensor IC
    ACS37002 – Robust Non-Ratiometric Current Sensor
    A5932 – Three-Phase Sensorless Sinusoidal Fan Controller
    A5947 – Three-Phase Sensorless Fan Driver
    AMT49406 – Code-Free FOC Sensorless BLDC Motor Controller
    A89301 – Code-Free FOC Sensorless BLDC Motor Controller
    A89306 – Code-Free FOC Sensorless BLDC Motor Driver
     
    Close
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    Motorized Dampers and Louver Control

    ALS31000 – 5V Linear Position Sensor
    A31004 – 3.3V Linear Position Sensor
    A1330 – Programmable Angle Position Sensor
    A3909 – Dual Full-Bridge Motor Driver
    AMT49701 – Quad Full-Bridge PWM Motor Driver
    Close
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    Rotary Control Knobs

    A1391 – Linear Hall-effect Sensor with Sleep Mode
    A1330 – Programmable Angle Position Sensor
    ALS31300 – 3D Linear Position Sensor

     

    Close
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    Proximity Sensors

    A3211 – Low Duty Cycle Hall-effect Switch
    APS13295 – High ESD Hall-effect Switch
    A1266 – 3D Hall-effect Switch
    Close

Documentation & Resources

Inductorless Buck/Boost Power Supply for Low-Power Automotive Sensor Applications

Application Note

Inductorless Buck/Boost Power Supply for Low-Power Automotive Sensor Applications

AN296247 - This article discusses the features and applications of Allegro MicroSystems’ A4480 regulator IC in automotive low-power systems ...

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Convenient and Isolated Power Measurements via SPI or I2C using ACS71020 or ACS37800 Power Monitoring ICs

Application Note

Convenient and Isolated Power Measurements via SPI or I2C using ACS71020 or ACS37800 Power Monitoring ICs

AN296180 - This application note describes the I2C and SPI interfaces on the ACS71020/ACS37800 Power Monitoring ICs from Allegro MicroSystems.

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Brochure: Integrated Power Monitoring with the ACS37800

Brochure

Brochure: Integrated Power Monitoring with the ACS37800

Allegro’s ACS37800 offers its customers the capability to easily monitor and optimize the energy efficiency of power supplies, lighting, and motor ...

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Allegro Current Sensor ICs: Unique Packaging Options for Every Thermal Budget

Application Note

Allegro Current Sensor ICs: Unique Packaging Options for Every Thermal Budget

AN296190 - The data contained within this application note allows the user to effectively choose an Allegro current sensor package based on their ...

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Position and Level Sensing Using Hall-Effect Sensing Technology

Application Note

Position and Level Sensing Using Hall-Effect Sensing Technology

This paper introduces Hall-effect technology, then explores how it has been applied, in particular, differentiating between the primary types of Hall ...

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Improved Performance and Features of Allegro’s Next Generation, High Power Density CB Package Current Sensors

Application Note

Improved Performance and Features of Allegro’s Next Generation, High Power Density CB Package Current Sensors

This application note will describe the use of the new high current ACS772 Hall-effect current sensor integrated circuit (IC) from Allegro ...

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