The JY03B is a highly integrated 3 phase BLDC motor controller IC designed for reliable and efficient sensorless brushless DC motor applications.
By integrating the motor control core, MOSFET gate driver, and internal LDO regulators into a single chip, JY03B helps simplify hardware design, reduce PCB size, and lower overall development cost.

Designed for engineers seeking a compact and stable motor control solution, the JY03B supports a wide range of low- to medium-voltage BLDC applications.

JY03B supports a wide range of low- to medium-voltage BLDC applications.

• 3 Phase BLDC Motor Controller Architecture
• Sensorless Drive Technology
• 9V–36V Wide Operating Voltage
• Built-in MOSFET Gate Driver
• Integrated 12V & 5V LDO Regulators
• Minimal External Components Required
• 16kHz Low-Noise PWM Control
• Forward / Reverse Rotation Control
• Adjustable Startup Torque
• Analog Speed Regulation (0–5V)

The JY03B includes multiple hardware protection mechanisms for improved system reliability:

• Over-current protection
• Current limiting control
• Over-voltage protection
• Under-voltage protection
• Locked-rotor protection
• Thermal protection
• Automatic restart function

The JY03B sensorless controller is suitable for:

• BLDC cooling fans
• DC water pumps
• Air circulation systems
• Smart home appliances
• Automotive auxiliary motors
• Industrial automation equipment
• AGV / AMR drive systems
• Portable outdoor tools

Compared with conventional BLDC control solutions, the JY03B provides:

• Simplified hardware development
• Reduced BOM cost
• Compact PCB design
• Stable low-speed operation
• High load startup capability
• Fast implementation without complex programming

Its hardware-based control architecture makes it ideal for cost-sensitive and rapid-development motor control projects.

Application circuit references and technical assistance are available for customer projects.

JUYI Tech

www.bldcmotor-driver.com
Sales@juyitech.com
WhatsApp: +86 185 3822 2869