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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.

Photocoupler Power MOSFETs Intelligent Power Device (IPD) Driver MCU Photocoupler MCU Motor Driver Motor Driver MCU

Recommended Products

Applications Semiconductor Recommended Device Features
PFC Circuit IGBTs GT30J122A
Low loss
General-purpose switches Small-signal transistors 2SA1162(PNP) / 2SC2712(NPN) SOT-346(S-Mini)2in1
2SA1586(PNP) / 2SC4116(NPN) SOT-323(USM)2in1
RN24xx(PNP) / RN14xx(NPN) SOT-346(S-Mini) ;bias resistor built-in transistors
RN23xx(PNP) / RN13xx(NPN) SOT-323(USM) ;bias resistor built-in transistors
Applications Semiconductor Recommended Device Features
General-Purpose Surge Absorption
and Circuit Protection
Zener Diodes CRYxx / CRZxx Series 0.7 W
CMZBxx Series 1.0 W
ESD Protection Diodes DF2SxxFS Series SOD-923/150 mW (1 in 1)
DF3AxxFU Series SOT-323/100 mW (2 in 1)
DF5AxxJE Series SOT-553/200 mW (4 in 1)
Switching Diodes 1SS352 SOD-323(USC)1in1
1SS181 / 1SS184 / 1SS226 SOT-346(S-Mini)2in1
1SS300 / 1SS301 / 1SS302 SOT-323(USM)2in1
Schottky Barrier Diodes CES520 / CES521 SOD-523(ESC)1in1
1SS392 / 1SS396 SOT-346(S-Mini)2in1
1SS393 SOT-323(USM)2in1
HN2S02FU SOT-363(US6)3in1
Applications Semiconductor Recommended Device Features
Defrosting Heater Photocouplers TLP560J / TLP267J Phototriac coupler
IGBT/MOSFET driver TLP155E: 0.6A Output
TLP5701: 0.6A Output
TLP5751: 1A Output, Rail to Rail Output
Direct IGBT/MOSFET drive
Applications Semiconductor Recommended Device Features
Compressor Control IPDs TPD4135K / AK Single-chip inverter
C,R,F Interior Fan Motor Controllers/Drivers TB6588FG
Brushless DC motor driver; sensorless
TC78B002FTG / FNG** Single-Phase BLDC Motor Driver
Motor Damper Motor Controllers/Drivers TB6674PG / FG / FAG
Stepping motor driver
Ice Maker TC78H600FNG / FTG
2 ch H-SW
PFC Control PFC (IC) TB6818FG Reduced PFC transformer humming
Various IC power supplies LDO TCR2EFxx Series SOT-25(SMV)/200-mA output
TCR3DFxx Series SOT-25(SMV)/300-mA output

**:Under development

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


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