03

Solution Configuration

04

Motor Driver

This IC receives signals from the MCU (Micro Control Unit)
and controls the motor.
We supply various package products including Stepper / BDC / BLDC Motors depending on functionality.
Our motor drive ICs minimize power loss through precise speed control and high-efficiency characteristics,
maximizing system reliability.

• Features

  High-Efficiency Power Control: Energy savings through motor speed and torque optimization via PWM control

  Low Noise, Low Vibration: Minimizes noise during refrigerator operation through motor rotation control

  Enhanced System Safety: Built-in overcurrent, overvoltage, and overheat protection functions

  Smart Function Support: Optimal control according to load through sensor and IoT integration

• Application Examples
  Compressor Motor Drive / Dispenser Motor Drive / Fan Motor Control

05

MOSFET for Power Inverter Applications

This is a power switching device that is critical for inverter circuits,
power supply, and motor drives.
We supply various package products
including High Voltage MOSFET,
Super Junction MOSFET, and Low Voltage Trench MOSFET.

Through low on-resistance (Rds(on))
and high-speed switching characteristics,
it reduces power loss and supports high-efficiency operation.

• Features

  High-Speed Switching: Low Rds(on) and high-speed switching

  Low Heat,
  High Efficiency: Minimizes energy loss

  Precise Control: High-efficiency power device optimized for inverter drives

  System Stability: Overcurrent/overheat protection

• Application
  Examples
  Inverter Power Drive Section / Power Conversion Section / Motor Drive Switch

06

Bipolar Transistor

This is a bipolar transistor that increases efficiency by minimizing
low power and loss.
We supply ultra-small package products.
Our bipolar transistors are devices responsible for current amplification and switching,
used in control board relays and low-power switching circuits.

• Features

  Motor Drive Optimization: Precisely performs power control of major motors such as
  fan motors and compressors using BJT

  Precise Speed/
  Position Control: Finely adjusts the position of louvers and damper motors
  to implement comfortable airflow

  High Reliability Design: Minimizes power switching loss and enhances thermal stability
  for stable operation even during long-term operation

• Application Examples
  Indoor Unit Fan Motor Control / Louver Automatic Angle Adjustment / Cooling/Heating Damper Motor Control

07

Schottky Barrier Diode

This is a diode using the Schottky barrier generated through
metal-semiconductor junction.
We supply ultra-small package products.
Our Schottky barrier diodes minimize power loss with low forward voltage
and fast switching characteristics, applied to power rectification,
reverse current blocking, and SMPS circuits.

• Features

  Low Power Loss: Low forward voltage drop reduces energy loss and provides electricity cost savings

  High-Speed
  Switching: Stable operation in sections requiring fast signal transition such as PWM control and inverter circuits

  Enhanced System Stability: Protects electronic components by minimizing overvoltage during reverse current and switching

  Miniaturization
  and Weight Reduction: Low heat simplifies thermal design, enabling overall circuit miniaturization

• Application Examples
  Inverter Motor Drive / Fan and Compressor Drive Circuits / Power Rectification and Protection Circuits

08

Switching Diode

This is a switching diode for rectification and switching.
We supply various package products with short reverse recovery time (trr).

Our switching diodes are used in circuits requiring fast ON/OFF switching,
applied to control signals and small switching circuits.

• Features

  High-Speed
  Switching Stability: Accurate signal transmission in PWM inverter and motor control
  circuits with fast reverse recovery in nS units

  System Efficiency
  Improvement: Reduces heat generation by minimizing power loss, improving overall system efficiency

  Miniaturization
  and Weight Reduction: Low heat simplifies thermal design, enabling overall circuit miniaturization

• Application Examples
  Inverter Motor Drive Circuits / Fan, Compressor PWM Drive Circuits
  / Power Switching and Protection Circuits

09

Zener Diode

This is a Zener diode used in constant voltage circuits.
We supply ultra-small package products for protecting
ICs from surges or static electricity.
Our Zener diodes safely conduct current above a specific voltage,
maintaining constant voltage and protecting circuits from overvoltage.

• Features

  Voltage
  Stabilization: Supplies constant voltage to key circuits despite input voltage fluctuations

  Circuit Protection: Protects major components such as motors and inverters by distributing current during overvoltage

  Enhanced System
  Reliability: Ensures stable operation despite power fluctuations or external abnormal voltages

  Versatile Design
  Application: Customizable application to various circuit conditions according to Zener voltage selection

• Application Examples
  Inverter Motor Drive Circuits / Fan, Compressor PWM Drive Circuits
  / Voltage Stabilization of Sensor and Control Circuits

10

Regulator

This is a regulator used to regulate and maintain
input voltage or pressure at a stable level.
We supply various package products to ensure stable operation
of connected devices. Our regulators are used to provide stable
power supply to control boards, sensors, and microcontrollers.

• Features

  Voltage Stabilization: Improves circuit operation reliability

  Noise Suppression: Minimizes sensor signal errors

  System Protection: Includes overvoltage/overheat protection functions

  PCB Design Simplification: Small package application possible

• Application
  Examples
  Main Control Board / Sensor and MCU Power Supply

11

OP Amp

This is an OP AMP that amplifies and outputs the voltage difference
between two input terminals.
We supply various package products for amplification, operation, and filtering.
Our OP AMP is used to ensure stability in sensor interfaces and control.
It enables accurate measurement, protection, and control,
used in solutions that simultaneously improve energy efficiency and product reliability.

• Features

  High Input Impedance
  / Low Output Impedance: Can amplify sensor signals without distortion

  Low Offset Voltage
  & Drift: Stable operation during long-term use

  Low Noise
  Characteristics: Improves sensor measurement reliability

  Rail-to-Rail
  Input/Output Support: Advantageous even in low voltage drive circuits

• Application Examples Indoor/outdoor heat exchanger, indoor air temperature detection signal amplification
  Refrigerant pressure monitoring, system protection
  Compressor motor and fan motor current sensing → Overcurrent protection
  Minute signal amplification → Indoor air quality control