As a popular multifunctional kitchen appliance, a high-speed blender uses rapidly rotating blades to break down ingredients and release their nutrients. Higher blade speeds produce finer, smoother results.

Performance Limitations of Conventional Series-Wound Motor Designs

Most blenders use series-wound universal motors. At high speeds, these motors generate substantial noise and vibration and offer a limited speed-control range, reducing the overall user experience.

As consumer expectations rise, users demand quieter operation, greater stability, and longer service life from kitchen appliances. Replacing series-wound motors with brushless motors has therefore become a key technology trend in the blender industry.

Geehy's G32F031 blender solution uses sensorless sinusoidal field-oriented control (FOC). Its optimized position observer and adaptive control algorithms address common industry challenges. Compared with conventional series-wound motor designs, the solution eliminates carbon brush friction noise, extends service life, improves speed-control accuracy, and enables quieter appliance operation.

Overview of the Geehy G32F031 Blender Solution

The solution integrates motor speed control, heating temperature control, and comprehensive fault protection. Geehy's in-house position observer enables stable sensorless FOC operation across a wide speed range. Combined with triac control and a mains zero-crossing detection circuit, the solution also provides precise closed-loop control of the heating element’s temperature.

With efficient computing performance and high-precision signal sampling, the G32F031 enables stable dynamic motor control. Its extensive on-chip resources also reduce the number of external components, improving system integration and reliability.

G32F031 Blender Solution Block Diagram

Key Advantages of the Solution

• Modular design for lower system costs: The G32F031 integrates op-amps, programmable analog comparators, and other resources. Combined with the supporting pre-driver module, these features simplify the motor current-sampling circuit, save PCB space, and reduce BOM costs.

• Strong startup under low-speed, heavy-load conditions: Working with the position observer, sensorless FOC quickly enters closed-loop operation and delivers high torque at low speeds, enabling reliable startup with hard ingredients.

• Adaptive control under changing conditions: The solution supports automatic recovery from blade jams, dynamic load adaptation, and motor parameter adjustment across high and low temperatures, maintaining stable operation under sudden load changes.

• Quiet, smooth operation: The sinusoidal FOC variable-frequency drive reduces torque ripple, vibration, and noise compared with conventional series-wound motor designs.

• Comprehensive safety protection: Overvoltage, undervoltage, overcurrent, stall, and phase-loss protection help prevent hardware damage under abnormal conditions and improve product durability.

Key Solution Specifications 

G32F031 Blender Solution Board

Operating Waveforms

Startup Current Waveform

High-Speed Operating Waveform

Core Chips in the Geehy G32F031 Blender Solution

G32F031 New-Generation Motor Control MCU

The G32F031 is designed for low- and medium-power motor control in small home appliances, offering high efficiency, comprehensive functionality, and excellent cost-performance. It provides the computing power, features, and resources required for high-speed operation while significantly shortening the product development cycle.

Click to learn more about the G32F031!

GHD1620T Motor Gate Driver

The GHD1620T is a 600V dual N-channel, single-phase high-voltage gate driver IC. It supports a 10–20V supply voltage, 3.3V/5V logic inputs, and a floating offset voltage of up to +600V. It also features a built-in 500ns dead time, low-forward-voltage bootstrap diode, and temperature sensor, making it suitable for a wide range of brushed and brushless DC motor applications.

Click to learn more about the GHD1620T!