220V 250W FOC BLDC Motor Controller Drive Board – Sensorless
220V 250W FOC BLDC Motor Controller Drive Board – Sensorless
220V 250W Three-Phase FOC BLDC Motor Controller Drive Board – Sensorless (No Hall)
This high-performance FOC (Field-Oriented Control) sine wave motor drive board is built around the powerful SNR8652M 32-bit MCU, delivering smooth, efficient, and precise control of three-phase DC brushless permanent magnet synchronous motors (BLDC/PMSM) — all without the need for Hall sensors. Compact, feature-rich, and easy to integrate, it's the ideal solution for engineers and makers working on high-voltage motor-driven applications.
Key Features
- FOC Sine Wave Drive – Smooth torque delivery and quiet motor operation via field-oriented control
- Zero-Speed Closed-Loop Start – Reliable startup performance from standstill
- Sensorless (No Hall) Observer – Eliminates Hall sensor wiring complexity
- Phase Compensation Algorithm – Improves motor efficiency and stability
- Velocity Closed-Loop PID Control – Accurate and stable speed regulation
- Limited Power PID Algorithm – Prevents motor and drive overload
- Downwind (Freewheel) Start Algorithm – Safely starts motors already spinning
- Motor Start/Stop, Forward/Reverse Switching – Onboard ship-type switch and CW/CCW steering interface
- Potentiometer & PWM Speed Control – 0–5V onboard pot or external PWM (1–20 kHz, 0–100% duty cycle)
- FG Speed Feedback – RPM = FG Frequency (Hz) × 60 ÷ Pole Pairs
- Onboard LED Status Indicators – Standby, running, and error states at a glance
- 433 MHz Wireless Remote Control Receiver – Reserved wireless control interface included
- UART Serial Port – Reserved for custom serial control development
- Onboard Programming Interface – Easily update firmware via burn interface
Built-In Motor Protection
- IGBT over-temperature protection
- Phase-loss protection
- Locked-rotor protection
- Over-current protection
- Over-voltage & under-voltage protection
Specifications
| Working Voltage | 220V AC |
| Maximum Drive Power | 250W |
| Motor Type | Three-Phase BLDC / PMSM (Sensorless) |
| Core MCU | SNR8652M (32-bit) |
| Board Dimensions | 118 × 72 mm |
| PCB Thickness | 1.6 mm |
| PWM Frequency Range | 1–20 kHz |
| Speed Control Input | 0–5V Potentiometer or PWM Signal |
| Wireless Interface | 433 MHz (reserved) |
| Heat Sink | Included (supports up to 250W); forced cooling required above 50W |
| Country of Origin | Made in Mainland China |
Typical Applications
This drive board is well-suited for a wide range of 220V brushless motor applications, including:
- High-pressure water pumps
- High-pressure gear motors
- Industrial fans and ventilation systems
- Air conditioning units
- Ceiling fans
- Smoke/fog machines
- High-pressure blenders and food processing equipment
Thermal Management Notes
The board ships with a heat sink pre-installed. For motor drive applications under 50W, natural convection with adequate ventilation is sufficient. For applications exceeding 50W, active (forced-air) cooling is required. The included heat sink is rated to handle continuous operation at 250W with proper airflow.
Package Contents
- 1× FOC BLDC Motor Controller Drive Board (with heat sink)
For more information on electrical safety standards and best practices when working with motor drive systems, refer to OSHA Electrical Safety Guidelines.
Frequently Asked Questions
Q: Does this FOC BLDC motor controller work without Hall sensors?
A: Yes. This drive board uses a sensorless (no Hall) FOC algorithm with an onboard noninductive observer. It does not require Hall-effect position sensors, simplifying wiring and making it compatible with standard three-phase brushless permanent magnet synchronous motors (PMSM/BLDC) without Hall wiring harnesses.
Q: What is the maximum motor power this controller can handle?
A: The board is rated for up to 250W at 220V AC. The included heat sink supports this full power level provided forced-air (active) cooling is applied. For motors below 50W, passive ventilation is adequate.
Q: How do I control the motor speed with this drive board?
A: Speed can be set in two ways: (1) using the onboard potentiometer (0–5V analog input), or (2) via an external PWM signal on the dedicated PWM speed control interface (frequency range 1–20 kHz, duty cycle 0–100%). The optional 433 MHz wireless remote receiver is also reserved for future wireless speed control development.
Q: Can I change the motor's rotation direction?
A: Yes. The board includes a CW/CCW steering interface. Leave the interface pin floating (suspended) for clockwise (CW) rotation, or connect it to GND for counterclockwise (CCW) rotation. Direction switching is straightforward during both startup and operation.
Q: Is programming or firmware development required to use this controller?
A: The core FOC algorithm, closed-loop control, and protection logic are pre-loaded on the SNR8652M MCU. The board can be used out of the box for standard BLDC motor driving. An onboard UART serial port and programming interface are included for users who wish to perform secondary development or customize functionality.