Discover the JY03B Sensorless BLDC Motor Control IC by JUYI Tech. A 9-36V highly integrated, no-programming, pure hardware controller chip in an SSOP-28 package. Featuring integrated MOSFET drivers and full safety protections for home appliances, automotive pumps, and industrial fans.

The JY03B is a high-performance, highly integrated sensorless Brushless DC (BLDC) motor control IC developed by JUYI Tech. Designed to drastically simplify motor drive system layout and minimize external components, the JY03B consolidates a motor control core, MOSFET gate drivers, a 12V regulator, and a 5V LDO regulator into a single, space-saving SSOP-28 chip (excluding the power stage).

By adopting a pure hardware-based architecture, the JY03B requires zero software programming or firmware development. This allows design engineers to achieve rapid deployment, shorten R&D cycles, and significantly reduce overall manufacturing and BOM costs.

The IC incorporates comprehensive closed-loop circuitry, including advanced phase detection, adaptive startup, and multi-level protection arrays, ensuring exceptionally low noise, high driving efficiency, and ultra-stable motor operation across diverse loads.

• Pure Hardware Implementation (No Programming Needed): Fully eliminates the complexity of writing MCU code. Rapid parameter tuning via minimal external circuitry enables faster time-to-market.
• Proprietary JYKJ Full-Condition Safe Startup: Engineered with robust load startup algorithms, ensuring smooth, high-torque, and reliable motor initiation under high-inertia loads.
• Advanced 16kHz VSPWM Drive Mode: Delivers an optimal balance between thermal efficiency and acoustic noise. Compared to standard 20kHz architectures, JY03B provides significantly higher torque output under identical power conditions.
• Dual-Level Current Feedback & Overload Protection:
  • Level-1 (50mV Constant Current): At 50mV IS pin threshold, the IC clamps the drive current to safeguard external MOSFETs while maintaining maximum torque output.
  • Level-2 (120mV Shutdown Protection): If the current spikes abnormally to 120mV, JY03B triggers an ultra-fast shutdown within 4.5 µs to prevent hardware failure.
• Intelligent Stall Protection with Auto-Restart: Automatically detects motor lock/stalls. It attempts 10 consecutive safe restarts; if uncompleted, it disables all outputs to protect system components until reset.
• Soft Direction Switching: Supports real-time Forward/Reverse (ZF pin) transitions. The driver safely decelerates the motor to a full stop before reversing, eliminating reverse voltage spikes and mechanical wear.
• Precise Speed Monitoring (M Pin Output): Generates one precise pulse signal per motor commutation event, facilitating effortless integration into closed-loop variable-frequency systems.

Are you looking to optimize your next brushless motor drive design with a zero-programming, high-efficiency controller? JUYI Tech provides comprehensive hardware evaluation boards (such as the JYQD-V9.3E and JYQD-V9.3B series) to help you expedite your design phase.

Contact our team today for the latest datasheet, schematic diagrams, and volume pricing.

• Technical Support & Inquiry Email: Sales@juyitech.com
• TEL / WhatsApp: +86 185 3822 2869