The MOSFET solution for refrigerators is designed for three major scenarios: home, car, and commercial. It focuses on the core requirements of ultimate energy efficiency, silent operation, and 7 × 24-hour long life, covering the entire chain of variable frequency compressor drive, power conversion, and intelligent load management. It is compatible with a full range of products from ordinary fixed frequency refrigerators to high-end AI intelligent refrigerators.

Core Device Solution for Home Smart Refrigerator
1. Drive link of variable frequency compressor
As the "power heart" of the refrigerator, the core requirements are low switching losses and low torque pulsation, achieving precise temperature control and silent operation:
High voltage mainstream solution: VBE17R20S, 700V/20A, super junction SJ-Multi-EPI process, compatible with 220V AC bus, supports 50kHz high-frequency PWM, and works with FOC algorithm to achieve precise temperature control of ± 0.1 ℃, increasing overall efficiency by 15%
Low voltage DC solution: VBL1402, 40V/150A, groove process Rds (on) as low as 2m Ω, TO-263 package with excellent heat dissipation, suitable for low-voltage DC variable frequency compressors, significantly reducing conduction loss and operating noise

2. Efficient DC-DC power conversion process
To provide stable power supply for control boards, display modules, and sensor arrays, the core requirements are low loss and small packaging:

Synchronous rectification preferred: VBGQF1405, 40V/60A, DFN8 (3x3) package, Rds (on) under SGT process is only 4.2m Ω, synchronous Buck conversion efficiency on 12V/24V bus side exceeds 97%, significantly reducing standby power consumption
High voltage PFC solution: VBE165R15S, 650V/15A, TO-252 package, super junction multi epitaxial technology, suitable for global 85-265V wide voltage input, power factor improved to above 0.99 under active PFC topology

3. Intelligent load management process
Independently controlling multiple loads such as sterilization modules, circulating fans, lighting strips, etc., the core requirements are simplified driving and high integration:
Multi channel high side switch: VBC7P3017, -30V/-9A, TSSOP8 package, P-channel MOSFET can be directly driven by MCU GPIO without bootstrap circuit, realizing fan PWM speed regulation and on-demand start stop of sterilization module, reducing BOM cost by 20%
Sensor power control: VBK4223N, dual channel -20V/-1.8A integrated in SC70-6 ultra small package, -0.6V low threshold voltage can be directly driven by 3.3V MCU, completely cutting off sensor power during inactive periods, meeting the strict energy efficiency requirements of the new national standard

Special solution for car refrigerator
Optimization for scenarios with 9-36V wide voltage input, enclosed space, and severe vibration and impact in vehicles:
Front stage wide voltage adaptation: VBFB165R08SE, 650V/8A, deep trench super junction technology, 460m Ω low on resistance, capable of handling transient high voltage of vehicle load, TO-251 compact package suitable for narrow installation space
Semiconductor refrigeration chip driver: VBL1402, 40V/150A, 2m Ω extremely low on/off resistance, high current on/off capability with sufficient redundancy, significantly reducing TEC module driving losses and extending refrigerator endurance after vehicle shutdown
Auxiliary load control: VBE1154N, 150V/40A, TO-252 package, 32m Ω low on resistance, used for intelligent switching of circulating fans and defrosting modules, gate threshold 3V can be directly driven by MCU

Strengthening scheme for commercial kitchen refrigerators
Suitable for harsh working conditions such as high temperature and humidity in the kitchen, and continuous operation 24/7:
Compressor inverter bridge core: VBM1107S, 100V/80A, TO-220 package, 6.8m Ω ultra-low Rds (on), as the lower tube of the three-phase inverter bridge, supports continuous operation under high loads, and the overall energy efficiency is improved by more than 10% compared to COP
High load dedicated switch: VBMB1607V1.6, 60V/120A, TO-220F fully insulated package, 5m Ω extremely low on resistance, directly controls high-power condensing fan and refrigerant circulating water pump, simplifies radiator installation structure