A5984GETTR-T

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Power management integrated circuit (PMIC) is a device that manages power supply and supplies an optimized electrical power for integrated circuit. It is widely used in consumer electronics, computers, and other devices. A PMIC motor driver is a type of PMIC controller used to control and manage motors in industrial and consumer applications. The A5984GETTR-T is aPMIC motor driver from Allegro MicroSystems for brushless DC (BLDC) motors.

The A5984GETTR-T motor driver is specifically designed for industrial and automotive applications including pumps, fans, and blowers. The device has a low-power standby current draw and can maintain higher efficiency even at low speeds. Additionally, the device has short-circuit protection, over temperature protection, and wide temperature operating range.

Application of A5984GETTR-T Motor Driver

The A5984GETTR-T can be used in a range of applications including window cleaning machines, fans, blowers, and water pumps. It can also be used in automotive applications such as window and windshield wipers. Additionally, the device can be used in a variety of industrial applications including machine tools and military equipment.

Features of A5984GETTR-T Motor Driver

The A5984GETTR-T is a monolithic integrated circuit containing logic for controlling BLDC motors. The device features a high current rating of 2.5A, a wide voltage range of 4.5 to 26.5 V, and a low quiescent current of 27µA. It has on-chip protection against short circuit and thermal over-temperature events, and comes with programmable speed, current, torque and RPM settings. Other features include an ultra-low jitter tachometer, a low voltage lock-out, and adaptable power management.

Working Principle of A5984GETTR-T Motor Driver

The A5984GETTR-T motor driver uses the Hall-Effect principle to accurately control the phase current of a three-phase brushless DC motor. It features a high-accuracy hall effect current sensing block along with six comparators. These comparators detect the zero crossing of the Hall-Effect sensor signals and compare the voltage from the Hall-Effect sensors against defined thresholds. This allows for accurate current control and varying speed control with minimal jitter.

The device also provides speed, current, torque, and RPM signals to the microcontroller. The speed signal is derived from an encoder that has two input signals connected to Hall-Effect sensors of the BLDC motor. The speed signal is used to adjust the duty cycle of a PWM controller in order to regulate the speed of the BLDC motor. The current signal is also derived from Hall-Effect signal and is used to set the current control threshold.

The A5984GETTR-T motor driver is designed to be used in industrial and automotive applications. It features an accurate current sensing, variable speed control, and on-chip protection features. Additionally, the device has a low power standby current draw and can maintain higher efficiency even at low speed. Its advanced features make it a great choice for a variety of industrial and automotive applications.

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