HVAC motor control

Products and reference designs

HVAC motor control

Block diagram

Overview

Heating, ventilation and air conditioning (HVAC) motor control solutions enable intelligent monitoring of HVAC motors for increased efficiency and predictive maintenance. Our reference designs and integrated circuits help you create HVAC motor control designs to meet standard energy conservation requirements.

Design requirements

HVAC motor control designs require:

  • Accurate current and voltage measurement through current transformers.
  • Battery-powered wireless motor diagnostics.
  • Energy efficient power-tree designs.

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Block diagram

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AC input HVAC motor control

AC-Mains (100-400VAC) AC-Mains (100-400VAC) DC Link DC Link Status LEDs Status LEDs Segment display Segment display Point of load power supply Point of load power supply DC/DC DC/DC Supervisor sequencer Supervisor sequencer PMIC PMIC LDO LDO Amp Amp Multiple supply rails Multiple supply rails Motor Motor Digital IO Digital IO Analog IO Analog IO Fieldbus/configuration interface Fieldbus/configuration interface Multiple supply rails Multiple supply rails DC link DC link SPI SPI Switch/button Switch/button STO STO Input rectifier & filter Input rectifier & filter AC/DC rectifier AC/DC rectifier Inrush current control Inrush current control EMI filter EMI filter PFC stage PFC stage PFC controller PFC controller Gate driver Gate driver Temp sensor Temp sensor Non-isolated DC/DC power supply Non-isolated DC/DC power supply PWM controller PWM controller REF REF DC-link current & voltage sense DC-link current & voltage sense Ref Ref Comp Comp Hall sensor Hallsensor Diagnostics/monitoring Diagnostics/monitoring Isolation Isolation Power switches Power switches Logic Logic Digital IO interface Digital IO interface Input serializer Input serializer Low side driver Low side driver Comparator Comparator Schmitt trigger Schmitt trigger Protection Protection Analog IO interface Analog IO interface Reference Reference Mux Mux Amp Amp ADC ADC DAC DAC Amp Amp Protection Protection 3-phase power stage 3-phase power stage IGBTs IGBTs Half-bridge gate drivers Half-bridge gate drivers Application controller Application controller MCU MCU Isolation Isolation Isolation Isolation Temperature monitoring Temperature monitoring Temp sensor Temp sensor Amp Amp Motor current & voltage sense Motor current & voltage sense Ref Ref Amp Amp Comp Comp ADC ADC Logic gate Logic gate Wireless interface Wireless interface Wi-Fi, BLE Wi-Fi,BLE Input user interface Input user interface Schmitt trigger Schmitt trigger Output user interface Output user interface Buffer/driver Buffer/driver GPIO expander GPIO expander Fieldbus/configuration interface Fieldbus/configuration interface Protection Protection RS485 RS485 CAN CAN Isolation Isolation Motor controller Motor controller MCU MCU Logic Logic Buffer Buffer

Technical documentation

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Type Title Date
More literature Engineering A Smarter Building 28 Jan 2016
Application note Using MSP on KNX Systems Application Report 15 Apr 2021
White paper Connected microcontrollers essential to automation in buildings (Rev. A) 15 Apr 2021
Application note Sensorless Trapezoidal Control of BLDC Motors (Rev. A) 14 Sep 2015
Application note Trapezoidal Control of BLDC Motors Using Hall Effect Sensors 01 Jul 2013

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