750W Sensorless FOC Lawn Mower Motor Drive Board

Fast and smooth startup with quick acceleration and high carrier frequency
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750W Sensorless FOC Lawn Mower Motor Drive Board

Overview

The 750W Sensorless FOC Lawn Mower Motor Drive Board is a high-performance motor control solution designed for lawn mowers, low-voltage fans, and electric bicycles.
It employs sensorless FOC vector control with weak-field operation, delivering smooth and fast startup, responsive torque output, and precise speed control.
With support for external stepless control, regenerative braking, and advanced protection mechanisms, this drive board ensures reliable and efficient operation in outdoor and portable applications.

Product Applications
– Lawn mowers and garden power tools
– Low-voltage portable fans
– Electric bicycles and light electric vehicles
– OEM/ODM embedded motor control solutions

Solution Features
•   Rated power: 750W, peak power up to 1.2kW for 3s for overload cutting
•   Input voltage: DC24–45V, compatible with lithium battery packs
•   Sensorless FOC + Weak-field control, extending torque performance at high speeds
•   External 0–5V / PWM stepless speed control, rapid and smooth startup
•   Fast torque response: <100ms, auto torque boost under load
•   Multiple protections: over-current, over/under-voltage, phase loss, over-temperature, stall, reverse battery
•   Regenerative braking, extending battery runtime by ~10%
•   High ingress protection: IPX7 / IP68, rain and dust resistant
•   CAN 2.0B communication interface, suitable for electric bicycle and smart control integration
•   Compact and lightweight: Easy for embedded installation

Why Choose Our 750W Lawn Mower Motor Drive Board
✅   Outdoor Reliability: Designed to withstand vibration, rain, and temperature extremes in portable tools.
✅   High-Demand Performance: Smooth startup, fast acceleration, and responsive torque for efficient grass cutting.
✅   Battery & Energy Optimization: Compatible with lithium battery packs and supports regenerative braking for longer runtime.
✅   Global Integration: Compact, lightweight, and supports CAN 2.0B for smart control and system integration.
✅   OEM/ODM Friendly: Flexible for embedded applications in lawn mowers, portable fans, and small EVs, backed by 20+ years of motor drive expertise.
✅   Choosing this drive board ensures a robust, efficient, and intelligent motor control solution for outdoor power tools — not just a motor driver.

Get a Quote or OEM Service
Looking for a custom BLDC motor drive solution for lawn mowers, low-voltage fans, or electric bicycles?
We offer full OEM/ODM services, including hardware design, firmware customization, and communication interface integration to meet your precise application requirements.
📩 Contact our engineering team today to discuss your project and get a tailored drive solution.

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Parameters

Category Parameter Typical Value Notes
Input Voltage Range DC24–45V Compatible with lithium battery packs
Rated Current 31.3A (@36V) Cable sizing reference
Peak Power 1.2kW (≤3s) Typical overload capability
Efficiency >92% (rated load) Energy efficiency
Output Output Voltage 0–36VAC (three-phase RMS) Corresponding to DC24–45V input
Rated Current 20.8A Continuous output capability
Speed Range 3600–6200RPM ±2% Adaptive for grass height
Control Mode Sensorless FOC + Weak-field Torque boost in high-speed range
Carrier Frequency 16–24kHz EMI and acoustic noise reduction
Torque Response <100ms Auto torque boost under load
Protection Under/Over Voltage 20V / 50V Battery protection
Phase Loss 100ms detection Motor winding protection
Over Current 130% for 2s Blade jam protection
Over Temperature MOSFET 110℃ shutdown Power device protection
Stall Protection Torque surge >20% reduces speed Mechanical safety
Reverse Battery Hardware MOS isolation Prevent misconnection
Ingress Protection IPX7 Outdoor operation safety
Environment Operating Temp -20~60°C Outdoor all-weather use
Humidity 10–100% RH Compatible with rain operation + IPX7
Vibration 10–200Hz, 3G Rugged terrain resistance
Others Topology Three-phase inverter + pre-driver High reliability architecture
Control Algorithm Sensorless FOC + Weak-field High-speed torque extension
Communication CAN 2.0B Vehicle-grade reliability
Speed Control Interface 0–5V analog / PWM Stepless handle control
Energy Recovery Regenerative braking Extends battery runtime ~10%
Protection Level IPX7 / IP68 Dustproof & waterproof

Resources

Pdf
750W Sensorless FOC Lawn Mower Motor Drive Board

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