The advanced sensorless FOC control strategy is employed to achieve compressor FOC speed control, fan torque control, electronic expansion valve control, NTC detection, serial port monitoring, and various safety protection measures—all on a single chip. This solution is suitable for multi-motor applications in household refrigerators, household air conditioners, commercial air conditioners, and automotive air conditioning.

Features:

• Supports FOC compressor control

• Supports three-resistor and single-resistor current sampling techniques

• Supports torque compensation at low speeds

• Supports BLDC or FOC control of fans

• Supports electronic expansion threshold adjustment

• Provides an interactive debugging tool based on serial communication

• Overvoltage, undervoltage, overtemperature, and overcurrent protection features

Application Advantages of the N32G455 Chip:

• High integration: Single MCU achieves FOC control for both fans and compressors

• Efficient FOC execution performance: One-time FOC execution time is less than 16μs

• Good robustness: Provides multiple sensorless algorithms, including MRAS

Recommended Models:

• N32G455