AH291-PG-B Integrated Circuits (ICs)

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The AH291-PG-B is a high-performance power management integrated circuit (PMIC) that is designed for automotive applications, such as motor control, in-vehicle infotainment, climate control, and automotive lighting applications. It is specifically designed to support the development of brushless direct current motors (BLDC). As a PMIC, the AH291-PG-B consists of several features, including a wide-range input voltage, low quiescent current, and integrated driver circuitry. It can be used to drive high power motors with greater efficiency and reduced noise.

The AH291-PG-B device is an integrated motor driver and controller with a wide input voltage range of 9 V to 30 V. It provides both motor control signals and motor current measurement. It can be used to drive both three-phase and four-phase BLDC motors, and it is capable of controlling a wide range of motor voltage and current applications. The device can be easily configured to meet the specific needs of a given motor.

To enable the AH291-PG-B device to accurately measure motor current, it makes use of low-side current-sense resistors. The current sensing signal is shaped to accurately measure the motor current and is then fed into an integrated 4-stage voltage divider. The voltage divider converts the current sense signal from an AC signal to a DC signal, which is then input to the integral comparators in the AH291-PG-B. The comparators compare the current sense signal to the user-defined nominal current values for the given motor and adjust the driver signal accordingly. This enables the AH291-PG-B to accurately measure and control motor current by minimising torque ripple, thereby providing superior motor control.

The AH291-PG-B is suitable for use in complex motor control applications, such as motor-drive systems, sensorless BLDC motor control, and step motor control. To further facilitate the integration of the device into an application-specific environment, it provides a host of features, including an integrated Hall effect sensor, gate driver supply, current sense amplifier, and an integrated EMC filter for keeping the system noise free. Additionally, the device supports a wide range of digital interface communication options, including I2C, CAN, and SPI.

The AH291-PG-B is a versatile and powerful motor driver and controller that is suitable for use in a wide range of motor control applications. It is integrated with a wide range of intelligent features that enable it to accurately measure motor current and adjust the motor control signal accordingly, which helps reduce torque ripple and provide superior motor control. Furthermore, it includes a range of additional features, including integrated Hall effect sensor, gate driver supply, current sense amplifier, and an integrated EMC filter to reduce system noise, making it an ideal solution for a variety of motor control applications.

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