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Refrigerator Compressor Digital Inverter

Renesas’ MCUs and op amp are adaptable to different compressors improving system efficiency and energy usage

Image of Renesas/IDT's Refrigerator Compressor Digital InverterA compressor driven by a digitally controlled inverter has the power to adapt itself to the usage habit of the consumer throughout the day, and it can operate at various speeds, making digital inverters for refrigerators more and more popular. This design uses a combination of Renesas’ 16-bit MCU (RL78/G14) and op amp (READ2302) to ensure an adaptable and robust solution for this type of application. Supporting a power rating up to 350 W, this design uses the MCU to control the BLDC compressor motor (180° sine wave control), and the op amp is used for motor current sensing using the three-shunt control methodology.

Features
  • Adaptable to different compressors
  • Improved system efficiency and energy usage
  • 180° sensorless FOC control

MCUs

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC MCU 16BIT 256KB FLASH 100LQFPR5F104PJAFB#V0IC MCU 16BIT 256KB FLASH 100LQFP315 - ImmediateView Details
IC MCU 16BIT 64KB FLASH 32LQFPR5F104BEAFP#V0IC MCU 16BIT 64KB FLASH 32LQFP24 - ImmediateView Details

Regulator

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC REG LINEAR POS ADJ 50MA 8SOICISL80136IBEAJZ-T7AIC REG LINEAR POS ADJ 50MA 8SOIC154 - ImmediateView Details

Op Amp

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
MSIG CMOS DUAL OPAMP HI-SPEED TSREAD2302GSP#GC3MSIG CMOS DUAL OPAMP HI-SPEED TS0View Details
Published: 2019-08-20