FAN8082DTF Integrated Circuits (ICs)

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Power management integrated circuits (PMIC) have become commonplace in mobile phone, laptop, and tablet designs to support system level and board level requirements. PMICs facilitate voltage, current and power flow management within these designs, allowing the various components in the system to be operated at the correct voltage, current and power levels. The FAN8082DTF is a chip in the PMIC family that is designed to be used within motor driver applications and for greater current, power and control accuracy and efficiency. This article looks at the FAN8082DTF – what it does, and the benefits it offers.

What is the FAN8082DTF?

FAN8082DTF is a fully integrated high-efficiency stepper motor driver from Fairchild Semiconductor. It comprises a programmable 4-phase output driver, a regen power FET, power MOSFETs, and a buck converter – all in a tiny 4×4 QFN package. The FAN8082DTF is designed to minimize motor driver losses and maximize efficiency, control accuracy, and power efficiency. It also offers a high level of integration and low electromagnetic interference. It is ideal for brushless DC motor and stepping motor applications.

How Does the FAN8082DTF Work?

In order to understand how the FAN8082DTF works, it is important to understand how brushed motors and stepper motors work. Both brushed motors and stepper motors are electro-mechanical devices that convert electrical energy into mechanical energy. A brushed motor consists of a rotor, stator, and brushes. The stator is an electromagnet, and when current is passed through it, it generates a magnetic field. This field interacts with the rotor, causing it to turn. In a stepper motor, the stator consists of both electromagnets and permanent magnets. By applying current to different combinations of the electromagnets, the stepper motor shaft will move in a specific direction.

The FAN8082DTF takes input from a 4-bit digital signal and drives a 4-phase stepper motor or DC brushless motor accordingly. The device operates in two different modes: phase stepping drive mode and open phase drive mode. In phase stepping drive mode, the FAN8082DTF monitors the phase state of the stepper motor and drives it in either the clockwise or counter-clockwise direction, depending on the input signal. In open phase drive mode, the FAN8082DTF drives the motor in a single direction, without feedback from the motor.

Benefits of the FAN8082DTF

The FAN8082DTF offers a number of benefits for motor control applications. It offers higher efficiency and lower EMI than traditional brushed or stepper motor driver ICs, due to its integrated power MOSFETs, regen Power FETs, and buck converters. These features allow the FAN8082DTF to minimize heat generated, minimize board space, and improve cost-effectiveness. In addition, the FAN8082DTF can operate from 4V to 17V and delivers up to 2A. It also offers low current shut down, over current protection, rorelay latency protection and short circuit protection, making it ideal for industrial environments, medical equipment, and vehicle systems.

Conclusion

The FAN8082DTF is a PMIC designed specifically for motor driver and motor control applications. It offers a high level of integration and low EMI, allowing for higher efficiency and more accurate control. Its features make it suitable for industrial, medical, and automotive applications, and it offers a number of safety features to make it reliable and cost-effective. The FAN8082DTF is an ideal solution for motor driver designs that require greater control accuracy, efficiency, and power savings.

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