JUYI Tech JYQD-V9.3E 12V 24V 36V 3 Phase BLDC Motor Driver Board 20A Sensorless Brushless DC Controller with JY03B IC

High-performance bare-board sensorless 3-phase brushless DC motor controller featuring PWM / 0-5V analog speed control, direction switching, and real-time FG speed pulse signal output. Compact design engineered for reliability and efficient motor control in industrial and OEM applications.

• Wide Operating Voltage & High Current: Supports 10V to 36V DC supply with a continuous working current up to 20A, suitable for high-torque 3-phase BLDC motors.

• Dual Speed Control Modes: Compatible with both 0–5V Analog Voltage and 1–20kHz PWM Duty Cycle (0–100%) speed regulation.

• Integrated Signal Feedback: Features built-in FG speed pulse signal output (5V pulse, <5mA) for precise closed-loop rotation tracking.

• Compact Bare-Board Design: Small footprint (63.0mm × 42.5mm × 17mm) engineered for direct embedded integration into custom enclosures and equipment.

• Low Thermal Load: For applications under 100W, no forced heatsink is required under standard ambient ventilation conditions.

• GND: Internal control ground.

• VR: Speed control input port. Accepts 0–5V analog voltage or PWM signal (PWM ground must share common GND with driver board).

• Z/F: Direction control port. Connect to 5V / Floating for CW; connect to GND for CCW.

• M: Speed pulse feedback output port. Generates 5V pulse signal (<5mA) for speed monitoring.

• 5V: On-board 5V DC reference output. (Note: Exclusively for external speed control potentiometers and switches. Do NOT power external devices!)

• P+ / VCC: DC power supply positive (+).

• P- / GND: DC power supply negative (-).

• MA / U: Motor phase line U.

• MB / V: Motor phase line V.

• MC / W: Motor phase line W.

• Parameter Matching: Verify that the target motor’s working voltage and rated power strictly fall within the driver board’s rated specification (10–36V DC, ≤20A).

• Motor Tuning & Compatibility: While designed for 3-phase sensorless BLDC motors, variation in motor phase inductance or back-EMF may require adjusting driver board filter capacitors to eliminate startup jitter, reverse motion, or high phase current under load.

• Thermal Management: For motor loads under 100W, external heatsinks are not mandatory provided normal air convection is maintained. For high-power/continuous heavy load usage, ensure adequate heat dissipation and electrical insulation on the back-side power MOSFETs.

• Wiring & Interference Prevention: Keep motor phase lines (U, V, W) as short as possible to prevent signal interference and electromagnetic noise.

Q1: Is the JYQD-V9.3E driver suitable for BLDC motors with Hall sensors?

A: The JYQD-V9.3E is optimized for sensorless (Hall-less) 3-phase BLDC motors. For Hall-sensor motor driver options, please check JUYI Tech’s sensor-based product series.

Q2: Can I power external sensors or microcontrollers using the 5V output pin?

A: No. The onboard 5V output pin is specifically designed to provide reference voltage for external speed potentiometers or directional switches. External power draw may cause control instability or damage the internal voltage regulator.

Q3: How do I change the rotation direction of the motor on JYQD-V9.3E?

A: Rotation direction is controlled via the Z/F pin. Connecting Z/F to 5V (or leaving it floating) sets one direction, while connecting it to GND reverses the rotation direction.