HVAC controller

Products and reference designs

HVAC controller

Block diagram

Overview

Our integrated circuits and reference designs help you create a differentiated heating, ventilation and air conditioning (HVAC) controller design for building management systems with maximum efficiency and lower system power.

Design requirements

HVAC controller designs often require:

  • New environmental sensors on the same 4-20mA loop.
  • Support for multiple wired and wireless standards.
  • Noise-tolerant capacitive touch human machine interface (HMI) to replace traditional mechanical buttons.
  • Precise motor control of system actuators and valves to increase overall system efficiency.

Block diagram

Find products and reference designs for your system.

System controller

24Vac / Vdc 24Vac / Vdc Status LEDs Status LEDs 24Vac 24Vac Industrial Ethernet interface Industrial Ethernet interface Ethernet PHYs Ethernet PHYs 24V AC / DC digital output 24V AC / DCdigital output 0 -10v or 4-20mA 0 -10v or4-20mA Ethernet Ethernet Fieldbus Fieldbus Relay output Relay output Analog Inputs 0 -10v or 4-20mA Analog Inputs0 -10v or4-20mA Universal analog IO Universal analog IO Digital input Digital input Input power protection Input power protection Inrush and over current protection Inrush and over current protection OVP and reverse polarity protection OVP and reverse polarity protection Reverse current protection Reverse current protection Non-isolated DC/DC power supply Non-isolated DC/DC power supply LDO LDO DC/DC DC/DC PMIC PMIC Voltage Supervisor Voltage Supervisor Isolated DC/DC power supply Isolated DC/DC power supply PWM controller PWM controller LDO LDO `` `` AC input monitoring AC input monitoring Ref Ref Comp Comp Logic gate Logic gate Isolation Isolation Isolation Isolation AC switch AC switch FET FET Current sense Current sense Hall sensor Hall sensor Amp Amp Output user interface Output user interface Buffer/driver Buffer/driver GPIO expander GPIO expander AI protection AI protection Protection Protection Analog input Analog input Reference Reference Mux Mux Amp Amp ADC ADC FET FET Relay driver Relay driver Low-side driver Low-side driver Analog output Analog output Reference Reference Amp Amp DAC DAC GPIO expander GPIO expander V/I driver V/I driver AO protection AO protection Protection Protection IO protection IO protection Protection Protection Universal I/O Universal I/O Reference Reference Mux Mux Amp Amp ADC ADC DAC DAC Amp Amp V/I driver V/I driver DI protection DI protection Protection Protection Digital input interface Digital input interface Isolated input receiver Isolated input receiver Digital input Digital input Input serializer Input serializer Comparator Comparator Digital input isolation Digital input isolation Digital isolator Digital isolator Fieldbus interface Fieldbus interface RS485 RS485 CAN CAN Digital isolator Digital isolator Interface translator Interface translator IF protection IF protection Protection Protection Wireless interface Wireless interface WIFI / BLE WIFI / BLE Computing unit Computing unit MPU MPU Logic Logic Buffer Buffer Ethernet IF protection Ethernet IF protection Protection Protection Input rectifier Input rectifier AC/DC rectifier AC/DC rectifier EMI filter EMI filter

Wireless interface

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An integrated microcontroller and radio topology is intended for designs requiring additional resource management. Integrated topologies also allow the application layer, wireless stack and RF radio functionality to be on one chip. A dedicated RF radio is an option for designs requiring 2.4 GHz, Sub-1 GHz, or Wi-Fi wireless connectivity. The dedicated RF radio allows the existing host processor the handle the wireless stack and application.

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Wireless connectivity (19)
Other wireless products
  • CC2500Low Cost, Low-Power 2.4 GHz RF Transceiver Designed for Low-Power Wireless Apps in the 2.4 GHz ISM B
    Data sheet: PDF | HTML
  • CC2530-RF4CEZigbee, IEEE 802.15.4 and RF4CE wireless MCU with 256kB Flash and 8kB RAM
    Data sheet: PDF | HTML
  • CC25922.4 GHz range extender with up to +22 dBm output power
    Data sheet: PDF | HTML
Low-power 2.4-GHz products
  • CC2651R3SimpleLink™ 32-bit Arm® Cortex®-M4 single-protocol 2.4-GHz wireless MCU with 352-kB flash
    Data sheet: PDF | HTML
  • CC2540Bluetooth® Low Energy wireless MCU with USB
    Data sheet: PDF | HTML
  • CC2640R2FSimpleLink™ 32-bit Arm® Cortex®-M3 Bluetooth® 5.1 Low Energy wireless MCU with 128-kB flash
    Data sheet: PDF | HTML
Sub-1 GHz transceivers
  • CC1120High performance Sub-1 GHz wireless transceiver for narrowband systems
    Data sheet: PDF | HTML
  • CC1125Ultra-high performance Sub-1 GHz wireless transceiver for narrowband systems
    Data sheet: PDF | HTML
  • CC1101Low-power Sub-1 GHz wireless transceiver
    Data sheet: PDF | HTML
Wi-Fi products
  • CC3301MODSimpleLink™ Wi-Fi 6 and Bluetooth® Low Energy companion module
    Data sheet: PDF | HTML
  • CC3200SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® wireless MCU with 2 TLS/SSL and 256kB RAM
    Data sheet: PDF | HTML
  • CC3100SimpleLink™ 32-bit Arm Cortex-M3 Wi-Fi® wireless network processor
    Data sheet: PDF | HTML
  • CC3100MODSimpleLink™ Wi-Fi CERTIFIED™ network processor module for Internet-of-Things with 2 TLS/SSL
    Data sheet: PDF | HTML
  • CC3200MODSimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® and Internet-of-Things wireless module
    Data sheet: PDF | HTML
  • CC3220SSimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® wireless MCU with secure boot and 256kB RAM
    Data sheet: PDF | HTML
Sub-1 GHz wireless MCUs
  • CC1312RSimpleLink™ 32-bit Arm Cortex-M4F Sub-1 GHz wireless MCU with 352kB Flash
    Data sheet: PDF | HTML
  • CC1350SimpleLink™ 32-bit Arm Cortex-M3 multiprotocol Sub-1 GHz & 2.4 GHz wireless MCU with 128kB Flash
    Data sheet: PDF | HTML
  • CC1352RSimpleLink™ 32-bit Arm Cortex-M4F multiprotocol Sub-1 GHz & 2.4 GHz wireless MCU with 352kB Flash
    Data sheet: PDF | HTML
  • CC1314R10SimpleLink™ Arm® Cortex®-M33 Sub-1 GHz wireless MCU with 1-MB flash and up to 296 kB of SRAM
    Data sheet: PDF | HTML
  • TIDC-01002SimpleLink™ Sub-1 GHz Sensor to Cloud Gateway Reference Design for TI-RTOS Systems
    Design guide: PDF Schematic: PDF
  • TIDC-WL1837MODCOM8I2.4 & 5 GHz Dual Band Wi-Fi® + Bluetooth® Antenna Design on WiLink™ 1837 Module
    Schematic: PDF

Technical documentation

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Type Title Date
More literature Engineering A Smarter Building 28 Jan 2016
White paper Building automation for enhanced energy and operational efficiency (Rev. A) 27 Jul 2017
White paper Smart power opens door to more efficient electrical use 21 Mar 2016
Technical article How accurate sensing in HVAC systems improves efficiency and saves consumers money PDF | HTML 21 Aug 2023
White paper Overcurrent protection enables more efficient and reliable systems 16 May 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

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