JY03B Sensorless BLDC Motor Control IC | 9-36V Highly Integrated Brushless Motor Driver Chip with Built-in MOSFET Gate Driver

Simplify your motor drive design, slash your BOM costs, and accelerate your time-to-market with the JY03B—the ultimate all-in-one hardware ASIC solution for sensorless brushless DC motor control.

The JY03B is a next-generation, high-performance sensorless BLDC motor control IC independently developed by JUYI Tech (Shanghai Juyi Electronic Technology Development Co., Ltd). Engineered to eliminate complex external circuitry, this chip achieves an extraordinary level of integration by packing the Motor Controller, a High-Speed MOSFET Gate Driver, a 12V Regulator, and a 5V LDO Regulator into a single, compact SSOP-28 package.

Powered by our proprietary pure-hardware architecture and advanced startup algorithms, the JY03B requires zero MCU firmware programming. It handles all back-EMF sensing, phase commutation, and safety monitoring autonomously, delivering a true "Plug-and-Play" efficiency for engineers and manufacturers worldwide.

To assist your engineering team in hardware matching, here are the detailed electrical and absolute parameters of the JY03B IC:

Traditional sensorless BLDC designs require a discrete MCU, gate drivers, a 12V step-down buck/regulator, and a 5V LDO to power the logic. The JY03B integrates all of these essential power blocks internally. You can eliminate dozens of external resistors, capacitors, and diodes, shrinking your PCB dimensions and substantially lowering your manufacturing and warehousing costs.

Skip the exhausting process of writing thousands of lines of C code, debugging back-EMF filtering routines, or adjusting complex PI loops. JY03B is a dedicated hardware-coded ASIC. It provides full closed-loop control through physical component tuning, cutting development time from months to days.

Sensorless motors often suffer from jitter or startup failure under fluctuating back-EMF or high-friction loads. Backed by JUYI Tech’s proprietary JYKJ closed-loop adaptive startup algorithms, the JY03B guarantees smooth, jitter-free, and high-torque motor startup from a complete standstill every single time.

Built-in hardware-level protection mechanisms act in microseconds to safeguard your entire driver board:

1)Intelligent Anti-Stall Protection: Automatically detects motor lock-ups, shuts down the output to prevent burnout, and safely initiates up to 10 restart attempts.

2)Dual-Stage Overcurrent Protection: Real-time current sensing (50mV threshold for continuous constant current regulation, and 120mV threshold for immediate emergency cut-off).

3)Thermal & Over/Undervoltage Protection: Automatically locks out operation if the power supply spikes or drops beyond safe thresholds.

The extreme versatility, wide voltage input, and hardware reliability make the JY03B the preferred platform chip for various high-growth sectors:

• Smart Home Appliances: Robotic vacuum cleaners, floor scrubbers, continuous-duty high-speed blowers, quiet ceiling fans, and smart kitchen blenders.

• Automotive & New Energy Vehicles (NEV): Electric water pumps, engine cooling pumps, automotive seat ventilation systems, and compact HVAC blowers.

• Industrial Automation & Micro-Fluids: Miniature hydraulic oil pumps, medical chemical dosing pumps, AGV/AMR automated warehouse robotics, and small conveyor drives.

• Outdoor & Power Tools: Cordless lawn mowers, electric garden trimmers, automated window openers, and miniature air compressors.

To drastically reduce your prototyping phase, JUYI Tech offers pre-verified, mass-produced driver boards built around the JY03B IC. You can order these directly for instant testing:

• Model JYQD-V9.3E: Supports 9V-36V DC input, designed for medium-to-high power loads with a continuous working current of up to 20A.

• Model JYQD-V9.3B: Supports 9V-36V DC input, ideal for compact or low-power applications with a working current of up to 8A.

Are you ready to optimize your next brushless motor project? JUYI Tech provides global engineering support, full application schematics, and evaluation samples for B2B clients.

• Technical Support & Inquiry Email: Sales@juyitech.com

• TEL / WhatsApp: +86 185 3822 2869