company blog about Mingjiada Supply Original Allegro A89301GESSR 50V Ultra Low Noise BLDC Motor Controller

Mingjiada Supply Original Allegro A89301GESSR 50V Ultra Low Noise BLDC Motor Controller

Shenzhen Mingjiada Electronics Co., Ltd. offers long-term supply of the Allegro A89301GESSR – an ultra-quiet, sensorless, FOC BLDC motor controller.

Mingjiada Electronics provides a stable, long-term supply of the Allegro A89301GESSR three-phase sensorless BLDC motor controller. This innovative QuietMotion solution is revolutionising fan and pump applications through its exceptional quiet operation, precise field-oriented control (FOC) technology, and sensorless design.

01 Product Description and Core Advantages
The Allegro A89301GESSR is a three-phase sensorless brushless DC (BLDC) motor driver. As one of Allegro's inaugural QuietMotion solutions, it achieves outstanding efficiency and noise performance through a fully integrated Field-Oriented Control (FOC) algorithm.
The A89301GESSR is ideally suited for ceiling fans, pedestal fans, bathroom exhaust fans, and high-end household appliance fans and pumps.
Its sensorless design eliminates the need for traditional Hall sensors or encoders, reducing system complexity and cost while maintaining high-performance motor control.

Supplied by Mingjiada Electronics, the A89301GESSR is housed in a 24-pin 4mm × 4mm QFN package with an exposed thermal pad (suffix ES). This package is lead-free, featuring a 100% matte tin-plated lead frame.

02 Detailed Specifications
The A89301GESSR operates within a supply voltage range of 5.5V to 50V, making it suitable for a broad spectrum of industrial and application scenarios.
With an operating temperature range of -40°C to 105°C, the device ensures stability and reliability in harsh environments.
The 24-QFN (4x4) package minimises board footprint, making it ideal for space-constrained applications.
Regarding interfaces, the A89301GESSR supports multiple control methods including analogue, I²C, and PWM, offering significant design flexibility.
The output configuration of the A89301GESSR is a half-bridge (3), specifically designed for three-phase BLDC motors.

03 Product Features and Technical Innovations
The A89301GESSR employs advanced Initial Position Detection (IPD) technology, detecting the rotor's initial position in under 1 millisecond without requiring shaft movement. This enables rapid, reliable, and non-reversing start-up.
Compared to conventional sensorless start-up methods, the A89301GESSR reduces the required test pulse current from six to two pulses. This significantly lowers start-up noise, making it an ideal choice for noise-sensitive applications.
The IPD technology in the A89301GESSR enhances initial detection accuracy from 60 degrees to 30 degrees, improving both start-up and low-speed performance.
Motor speed can be controlled via analogue, PWM, or CLOCK inputs, with optional closed-loop speed control allowing programmable settings for the RPM-to-clock frequency ratio.
The A89301GESSR provides a simple I²C interface for setting motor parameters, including rated voltage, rated current, rated speed, resistance, and start-up curve.

04 Application Areas and Scenarios
The A89301GESSR is particularly suited for domestic fans such as ceiling fans, pedestal fans, and bathroom extractor fans, where its low-noise characteristics significantly enhance user experience.
Within the household fan and pump sector, the A89301GESSR's efficient control and reliability make it an ideal choice for premium domestic appliances.
The A89301GESSR's wide voltage range and robust design also render it suitable for automotive fan motors, meeting the stringent performance and reliability demands of automotive electronics.
For high-inertia loads, the A89301GESSR optimises motor start-up performance during stationary, windmill, and even reverse windmill conditions.

Allegro's A89301GESSR is redefining application standards for brushless DC motors through its exceptional quiet operation and advanced motor control technology. Whether for household appliances, industrial equipment, or automotive electronics, the A89301GESSR solution from Mingjiada Electronics empowers designers to achieve quieter, more efficient, and more reliable motor drive systems.

For further product information or pricing enquiries regarding the BLDC motor controller A89301GESSR, please visit the Mingjiada Electronics official website (https://www.integrated-ic.com/) for supply details.