The MOSFET solution for air conditioning is designed for a full range of scenarios including household variable frequency hanging machines, cabinet machines, and commercial central air conditioning. It focuses on the core requirements of new energy efficiency, ultra quiet operation, and 7 × 24-hour long life, covering the entire chain of PFC boosting, variable frequency compressor drive, fan control, and intelligent peripheral management, helping the SEER energy efficiency level of the whole machine break through the industry benchmark.

Core Power Link Scenario Device Scheme
1. Front end PFC boost link
As the first level conversion of power grid input, the core requirements are high voltage tolerance margin, low switching loss, and support for titanium level energy efficiency performance:
High power flagship solution: VBPB18R47S, 800V/47A, TO-3P package, 90m Ω extremely low on resistance, suitable for high-power air conditioners with more than 3 horsepower, 800V ultra-high withstand voltage to cope with global wide voltage input and lightning surge, PFC level efficiency exceeds 99%
Mainstream household solution: VBM16R08600V/8A, TO220 package, 780m Ω low on resistance, compatible with 1-1.5 horsepower conventional models, mature package for easy installation of heat sink, supports high-frequency PWM control
High integration auxiliary power solution: Jingfeng Mingyuan BPA861X series, built-in 700V high-voltage MOSFET, integrated high-voltage startup and self bias circuit, no-load power consumption<50mw, significantly reducing the number of peripheral devices, suitable for air conditioning auxiliary power supply scenarios

2. Drive link of variable frequency compressor
As the "power heart" of air conditioning, the core requirements are low torque pulsation and high dynamic response, achieving precise temperature control and rapid cooling and heating:
High power cabinet machine solution: VBL1101N, 100V/100A, TO-263 package, 10m Ω extremely low Rds (on), significantly reduced three-phase inverter bridge conduction loss, supports FOC vector control, reduces compressor operating noise by more than 5dB
Mainstream AFK solution: VBQF1202, 20V/100A, DFN8 (3x3) package, 2.0m Ω ultra-low on resistance, extremely low parasitic inductance under groove process, suitable for high-frequency start stop working conditions of small and medium power compressors, stable temperature rise during long-term operation
Industrial grade strengthening solution: Ansenmei FDP036N10A, 100V/120A, TO-220 package, 3.2m Ω low on resistance, conduction loss of only 18W at 75A current, excellent anti avalanche ability, suitable for heavy-duty scenarios of commercial air conditioners with a power of over 5 horsepower

3. Indoor and outdoor DC fan control link
As the core carrier of the silent experience, the core requirements are stepless smooth speed regulation and extremely low operating noise:
High power fan solution: VBPB1101N, 100V/100A, TO3P package, 9m Ω low on resistance, ultra high current capability to easily drive high-power brushless DC fans, combined with FOC algorithm to achieve a "non inductive breeze" experience
Compact integration solution: VBGQA1606, 60V/60A, DFN8 5x6 package, Rds (on) of only 6m Ω under SGT process, efficient heat dissipation can be achieved by PCB copper plating, greatly reducing the volume of fan drive board and adapting to compact indoor unit installation space

4. Intelligent peripherals and load management process
The core requirements for controlling multiple loads such as electronic expansion valves, swing air motors, and sterilization modules are simplified driving and high integration
Universal load switch: VBA1102N, 100V/10.4A, SOP8 package, 20m Ω low on resistance, 1.8V low threshold voltage can be directly driven by MCU GPIO, used for independent power management of electronic expansion valves and Wi Fi modules
Low current solenoid valve drive: AO3401A, SOT-23 ultra small package, suitable for 24V solenoid valve on/off scenarios, with 1N4007 freewheeling diode to completely suppress inductive load off peak, long-term operation reliability is maximized