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Refrigerators

Since refrigerators work continuously, it is important to reduce their power consumption. At the same time, the market demand for ample indoor space is driving the need for thinner heat insulators and smaller motors. Because refrigerators are used in homes, it is necessary to improve motor efficiency, even at low speeds, in order to reduce acoustic noise and vibration. An inverter controls a compressor. Various sensors and a microcontroller work in tandem to regulate indoor temperatures and humidity. The compressor driver consists of IGBTs or power MOSFETs (PWMOSFETs). Power factor correction (PFC) ICs or IGBTs are used in the power supply circuit to keep harmonics in the input current below the IEC limit.

Block Diagram

Block diagram of refrigerators. Power MOSFETs Intelligent Power Device(IPD) Moter Driver MCU Photocoupler MCU LED MCU Moter Driver Moter Driver Driver Driver LED Photocoupler Photocoupler Photocoupler Sensor Input

Product Introduction

Microcontrollers
  • MCUs for main control
  • MCUs for motor control
  • MCUs for operation panel control
General-Purpose Linear ICs
  • Moter Control
    • Motor controllers/Drivers
  • C,R,F Indoor Fan
    • Motor controllers/Drivers
  • Motor Damper
    • Motor controllers/Drivers
  • Ice Maker
    • Motor controller/Driver
  • PFC Control
    • PFC(IC)
  • Compressor Control
    • IPDs
Optical Semiconductor Devices
  • Defrosting Heater
    • Photocoupler
  • Indoor Lamp
    • Photocoupler
  • Heater
    • Photocoupler
  • IGBT/MOSFET Driver
    • Photocouplers
Sensors and Image Pickup Devices
  • Door open detection
    • Magnetic sensors
Transistors
  • Compressor Control
    • IPDs
  • PFC Circuit
    • IGBTs
Diodes
  • General-Purpose Surge Absorbers / Circuit Protection
    • Zener Diodes
    • ESD Protection Diodes
    • Switching Diodes
    • Schottky Barrier Diodes

* System and product names mentioned herein may be trademarks or registered trademarks of respective companies or organizations.

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