Low-voltage vacuum cleaners are widely used in homes and commercial settings. They use high-speed brushless motors to drive fans and generate powerful suction, with suction performance closely linked to motor speed. Offering long service life, low noise, and precise speed control, brushless motors have become the industry standard.

To meet industry demands for high power, low noise, and reliable operation, Geehy combines highly integrated hardware with proprietary motor-control algorithms. This provides an efficient, quiet, and stable motor-control solution for low-voltage vacuum cleaners.

Overview of the Geehy G32M3114 Low-Voltage Vacuum Cleaner Controller Solution

Geehy developed this solution to support smarter low-voltage vacuum cleaners. It features high-speed sensorless field-oriented control (FOC), dual closed-loop speed and power control, and comprehensive fault protection. Supporting motor speeds of up to 220,000 RPM, the solution delivers the powerful suction, high-speed operation, and fast dynamic response required by vacuum cleaners.

Geehy G32M3114 Low-Voltage Vacuum Cleaner Controller Block Diagram

Key Advantages of the Solution

• Compact Design Saves Hardware Space

The G32M3114 integrates an LDO, operational amplifier, comparator, and dedicated pre-driver module, simplifying the motor-current sampling circuit and enabling compact vacuum cleaner designs.

• High Integration Reduces Cost

The integrated 6N 200V gate driver and 5V LDO reduce the number of external components, lowering system cost and simplifying development.

• Adaptive Startup with a 100% Success Rate

Single-shunt sensorless FOC, Geehy’s proprietary observer, and a self-converging closed-loop startup algorithm support smooth, fast startup under various load conditions.

• Optimized Algorithms Enable Quiet, Stable Operation

A smooth-compensation algorithm reduces torque fluctuations, vibration, and noise during high-speed operation for a quieter user experience.

• Comprehensive Protection Improves Reliability

Built-in overvoltage, overcurrent, locked-rotor, and phase-loss protection detects abnormal conditions and responds quickly, helping extend product life.

Key Specifications

Geehy G32M3114 Vacuum Cleaner Controller Solution Board

Operating Waveforms

Overview of the Geehy G32M3114 Motor-Control MCU

The G32M3114 features a 64MHz Arm^® Cortex^®-M0+ core with DIV, MULT, and CRC hardware accelerators. It supports low-latency, high-efficiency sensored and sensorless FOC. The integrated 6N 200V gate driver and 5V LDO combine with Geehy's motor-control software to simplify product development. This helps manufacturers reduce costs, improve efficiency, and accelerate mass production.

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