DRV8816PWP

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PMIC (Power Management IC) is a type of integrated circuit that functions as a power management unit. PMICs are also known as voltage regulators, controllers or converters, and are used in a variety of applications including computers, medical devices and automotive systems. Amongst others, PMICs contain motor drivers and controllers, of which DRV8816PWP is a common type. In this article, we will discuss the various application fields and working principles of the DRV8816PWP motor driver and controller.

The DRV8816PWP is a brushless DC (BLDC) motor driver and controller, featuring pulse-width-modulated (PWM) operation overvoltage and overcurrent protection, and an external sense resistor for current sensing. The device is designed to drive both unipolar and bipolar internal and external windings and is ideal for applications such as robotics, automotive and medical, particularly those requiring stepper- and/or servo-motor control.

Due to its high current rating, high efficiency, and wide operating temperature range, the DRV8816PWP is highly suitable for a range of motor control applications. It features a single 3 V to 5.5 V supply operation, under-voltage protection and a thermal shutdown feature for complete protection, making it a very reliable device for use in any type of high power application.

The DRV8816PWP’s typical application includes a BLDC motor, a microcontroller, and a power supply. The microcontroller controls the DRV8816PWP, which then drives the BLDC motor. The DRV8816PWP provides a high current output, full protection, and adjustable speed control. The device also provides a 5-bit resolution of the speed control input and has the capability of boosting or lowering the voltage to the motor. The power supply provides a separate power source for the motor and the controller logic, allowing the controller to use an adjustable voltage to control the BLDC motor.

The DRV8816PWP uses proportional-integral (PI) or pulse-width-modulated (PWM) control to drive the BLDC motor. In PI control, the motor’s speed is adjusted via the PI control loop. The motor speed is constantly measured and compared to the target speed, the difference is then multiplied by a gain to determine the amount of power applied to the motor. PWM control, on the other hand, uses the width of a pulse to set the power applied to the motor. The higher the pulse width, the greater the power applied to the motor.

Besides motor driving applications, the DRV8816PWP can also be used for other applications such as motor speed control, motor start/stop, motor commutation, and motor braking. The device has several output pins that can be used to control these functions. The output pins can be used to control the current or voltage applied to the motor, and can also be used to communicate with other external devices.

In addition, the DRV8816PWP has a built-in voltage regulator, which allows the logic level of the device to remain stable, even when the input voltage varies. This makes the device suitable for applications with variable input power sources, such as automotive and medical applications.

To sum up, the DRV8816PWP motor driver and controller is an ideal device for BLDC applications requiring stepper- and/or servo-motor control. Its wide operating temperature range, full protection and adjustable speed control make it a very reliable and versatile device for any industrial application.

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