AS5245-QF_EK_DB

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The AS5245-QF_EK_DB evaluation board is a flexible evaluation platform that enables users to explore and develop applications with BLDC (brushless DC) motor feedback. The board simplifies connecting three Hall-Effect sensors for a wide range of motor control applications. In addition to the three Hall-Effect sensors, the board packs an integrated AS5245 (40-pin LQFP) with 4kHz PWM frequency, soft-start control, and motor blanking functions. Moreover, the board boasts a 3.3/5V phase shifting voltage regulator, two GND return paths, and checkable start-stop operation. All these features enable users to explore high-performance motor control solutions with lower power consumption and greater noise immunity.

Application Field

The AS5245-QF_EK_DB evaluation board can be used in applications such as servo-motors, 3-phase BLDC motors, and multi-phase three-phase motors. Its broad input voltage range and integrated three-channel Hall-Effect sensor design makes it ideal for use with a variety of different motors, including precision motors with low inertia and low bearing friction.

The evaluation board is also useful for applications requiring accurate position and speed monitoring. This is made possible through the integrated Hall-Effect sensors, which detect the rotor\'s position in the presence of oscillatory magnetic fields or magnetic poles, thus enabling users to determine the motor position at perfectly predictable intervals. By combining the position and speed information with predetermined motion control parameters, the AS5245-QF_EK_DB makes it possible to accurately and precisely monitor the motion of a variety of systems, from semi-autonomous robots to high-precision 3-phase motors.

Working Principle

The AS5245-QF_EK_DB works by receiving two-phase sinusoidal signals from its three Hall-Effect sensors. The frequency of the received signals is 4kHz, which is much faster than what the human eye can perceive. These signals are then compared inside the board\'s microcontroller to determine the motor characteristics such as speed and position. With the data thus obtained, the microcontroller can control the variation of the motor\'s torque and/or current, so as to adjust the motor speed, increment or decrement motor position and adjust the starting and stopping processes.

Thanks to the integrated Hall-Effect sensors, the evaluation board can accurately measure the magnetic field of the rotor, which provides critical feedback data for the microcontroller to accurately control motor operation. By combining the integrated sensors with the 3.3/5V phase-shifting voltage regulator, users can create highly efficient and reliable motor control systems with lower power consumption and higher noise immunity than traditional systems.

In addition, the integrated soft-start control and motor blanking functions of the integrated AS5245 IC can minimize power consumption and increase motor torque when starting/stopping motor operation. This helps reduce mechanical vibration and wear of moving parts, thus increasing the lifespan of the motor.

Conclusion

The AS5245-QF_EK_DB is a powerful evaluation platform that simplifies the task of connecting three Hall-Effect sensors for a wide range of motor control applications. Its integrated AS5245 IC provides 4kHz PWM frequency, soft-start control, and motor blanking functions, making it ideal for applications such as servo-motors, 3-phase BLDC motors, and multi-phase three-phase motors. Moreover, its integrated 3.3/5V phase shifting voltage regulator and two GND return paths make it possible to create highly efficient and reliable motor control systems. All these features make the AS5245-QF_EK_DB an ideal choice for any motor control application.

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