DRV8805DW

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PMIC or power management integrated circuits are components of the electrical and electronics industry. The term is used to refer to any integrated circuit that is designed to control electric power circuit at the system level. Among these elements, Motor Drivers, Controllers are one of the important ones as they are used for controlling the electric energy made available to a motor. The DRV8805DW is one such motor driver and is designed for very low current fan applications.

DRV8805DW is designed for use to control micro-DC permanent magnet fan motors with up to 3-watt power levels. It is an integrated circuit IC with low-side and high-side MOSFET gate drivers and low-side or synchronous rectification, as well as protection elements such as a fault monitor. The device can also be controlled by PWM signals, providing high efficiency, long life and low noise operation.

In application, this device enables sensors and/or microcontrollers to drive and control the motor. DRV8805 accepts the PWM signal from the controller and executes its control algorithm. The low-side and high-side drivers then drive the motor with regulated current. It helps to drive the motor with minimum power, thereby reducing overall power consumption of the entire system. It also offers protection features like over current and short circuit protection, improving the reliability of the system.

The working principle of the DRV8805DW is to control the electric current available to the motor by providing the appropriate Gate Voltage to the MOSFET transistors. The PWM signal from the controller is sent to the chip, which adjusts its voltage to the transistor gates in order to control the electric current supplied to the motor. This electric current is then regulated by the MOSFET transistors and the chip, providing the necessary current for the motor to operate.

DRV8805DW is an ideal motor driver for many applications as it is capable of delivering up to 3-Watts of power to the motor while delivering a good efficiency. It is also capable of providing fault monitoring to ensure the safety of the motor and the system. In addition, its protection features ensure that the system is stable and reliable.

In conclusion, DRV8805DW is a motor driver and controller which is ideal for applications with micro-DC permanent magnet fans. It is capable of precise control of the supply current to the motor, as well as providing protection features. It is also highly energy-efficient, offering a long life and low noise operation for low current applications.

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