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Air conditioner indoor unit

Products and reference designs
Block diagram

Air conditioner indoor unit

Block diagram

Overview

Our integrated circuits and reference designs help you create highly efficient air conditioner indoor unit systems with advanced motor fan control, accurate environmental sensing and secure wireless connectivity features that meet energy label requirements.

Design requirements

    Modern air conditioner indoor unit systems require:

  • Variable speed, high-efficiency brushless direct current (BLDC) motor control.
  • Highly-efficient power supply with low standby power.
  • Secure, robust and reliable wireless connectivity.
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Block diagram

Find products and reference designs for your system.

Air conditioner indoor unit

AC input AC input DC DC Digital processing Digital processing MCU MCU Sensors Sensors Air quality sensors Air quality sensors Temperature sensors Temperature sensors Humidity Sensors Humidity Sensors Sun light sensors Sun light sensors Infrared sensors Infrared sensors Human activity sensors Human activity sensors Proximity sensors Proximity sensors 3D ToF 3D ToF Monitoring Monitoring Watchdog Watchdog Temperature Temperature Reset Reset Horizontal louver motor Horizontal louver motor Vertical louver motor Vertical louver motor 4 speed AC fan motor 4 speed AC fan motor BLDC fan motor BLDC fan motor M M M M M M M M Buzzer Buzzer Heater Heater Wired interface Wired interface Protection Protection UART UART Isolation Isolation Protection Protection RS485 RS485 Protection Protection CAN CAN Protection Protection PLC PLC Protection Protection LIN LIN Protection Protection Homebus Homebus Output user interface Output user interface LED / TFT LCD display LED / TFT LCD display LED driver LED driver Backlight LED driver Backlight LED driver Level shifter Level shifter Touch screen controller Touch screen controller TFT LCD driver TFT LCD driver Audio output Audio output Power stage Power stage Relay driver Relay driver Relays Relays Gate driver Gate driver Triacs Triacs MOSFETs MOSFETs IGBTs IGBTs Wireless interface Wireless interface Wifi Wifi Bluetooth Bluetooth 2.4G RF transceiver 2.4G RF transceiver Input user interface Input user interface Inductive /capacitive sensing Inductive /capacitive sensing Dial Dial Touch keys Touch keys Transmitter & receiver Transmitter & receiver Gesture recognition Gesture recognition Haptics driver Haptics driver Audio input Audio input EEROM memory EEROMmemory Current sense Currentsense Voltage sense Voltagesense Current & voltage sense Current & voltagesense REF REF Comp Comp Amp Amp Amp Amp Input power protection Input power protection Fuse Fuse X capacitor discharge X capacitordischarge Inrush current protection Inrush currentprotection Varistor Varistor EMI protection EMI protection Arc-fault circuit interrupter Arc-fault circuit interrupter Non-isolated AC/DC power supply Non-isolated AC/DC power supply PWM controller PWM controller Diode bridge rectifier Diode bridge rectifier Isolated AC/DC power supply Isolated AC/DC power supply PWM controller PWM controller Diode bridge rectifier Diode bridge rectifier Power protection & gating Power protection & gating E-fuse & protection E-fuse & protection Load switch Load switch Non-isolated DC/DC power supply Non-isolated DC/DC power supply DC-DC DC-DC LDO LDO Motor drive Motor drive Gate driver Gate driver BDC motor Ddriver BDC motor Ddriver BLDC motor driver BLDC motor driver Hall sensor Hall sensor Step motor driver Step motor driver MOSFET/IGBT MOSFET/IGBT Analog front-end Analog front-end MUX MUX REF REF ADC ADC AMP AMP

Wireless interface

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Robust, power efficient and highly secure solutions enabling easy addition of Wi-Fi connectivity.

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Wireless connectivity (11)
Wi-Fi products
  • CC3551E—SimpleLink™ wireless MCU with dual-band (2.4 and 5 GHz) Wi-Fi 6 and Bluetooth® Low Energy 5.4
    Data sheet: PDF | HTML
  • CC3501E—SimpleLink™ wireless MCU with 2.4 GHz Wi-Fi 6 and Bluetooth® Low Energy 5.4
    Data sheet: PDF | HTML
  • CC3200—SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® wireless MCU with 2 TLS/SSL and 256kB RAM
    Data sheet: PDF | HTML
  • CC3200MOD—SimpleLink™ 32-bit Arm Cortex-M4 Wi-Fi® and Internet-of-Things wireless module
    Data sheet: PDF | HTML
  • CC3301MOD—SimpleLink™ Wi-Fi 6 and Bluetooth® Low Energy companion module
    Data sheet: PDF | HTML
Other wireless products
  • CC2530-RF4CE—Zigbee, IEEE 802.15.4 and RF4CE wireless MCU with 256kB Flash and 8kB RAM
    Data sheet: PDF | HTML
  • CC2620—SimpleLink™ 32-bit Arm Cortex-M3 Zigbee® RF4CE wireless MCU with 128kB Flash
    Data sheet: PDF | HTML
Low-power 2.4-GHz products
  • CC2651R3—SimpleLink™ 32-bit Arm® Cortex®-M4 single-protocol 2.4-GHz wireless MCU with 352-kB flash
    Data sheet: PDF | HTML
  • CC2640—SimpleLink™ 32-bit Arm Cortex-M3 Bluetooth® Low Energy wireless MCU with 128kB Flash
    Data sheet: PDF | HTML
  • CC2630—SimpleLink™ 32-bit Arm Cortex-M3 Zigbee and 6LoWPAN wireless MCU with 128kB Flash
    Data sheet: PDF | HTML
  • CC2650MODA—SimpleLink™ 32-bit Arm Cortex-M3 multiprotocol 2.4 GHz wireless module with 128kB Flash
    Data sheet: PDF | HTML

Technical documentation

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Type Title Date
White paper TI DLP® Pico™ Technology for smart home applications (Rev. B) 27 Feb 2019
Application note Design and Implementation of Stepper Motor Control Over I2C Communication 21 Dec 2018
Technical article Can your RS-485 communication survive the great outdoors? PDF | HTML 14 Sep 2023
Technical article Are you smarter than a fifth-generation appliance? PDF | HTML 13 Sep 2023
Application brief Increasing Power Density With Active Clamp Flyback (UCC28780) 10 May 2022
Technical article Get smarter about ‘zero’ standby power in your next appliance design PDF | HTML 06 Sep 2023

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