FAN6290QFMX

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The FAN6290QFMX is a low-voltage motor drive from Fairchild Semiconductor that is used for powering high-speed three-phase brushed DC motors in a variety of applications. This versatile motor driver includes a current-mode control loop, an 8-bit digital-to-analog converter, and the ability to adjust the motor control parameters through the digital control registers. The FAN6290QF is ideal for cost-sensitive applications requiring 3-L-A-G drive capabilities and quiet operation with low EMI.

Overview of the FAN6290QFMX Application Field

The FAN6290QFMX is designed to power three-phase brushless DC (BLDC) motors in applications including pumps, blowers, fans, compressors, and industrial drives. It is a highly cost-effective solution for those applications since it combines the complete control solution – including control, protection and safety features – in one compact IC. The device also has overcurrent protection and a flexible management bus. In addition, it features a voltage range of 7.5 V to 18 V and output current of up to 5 A.

Working Principle

The FAN6290QFMX utilizes a current-mode control loop, which helps ensure stable motor operation. This control loop uses the motor’s back EMF voltage to regulate the current in the motor according to the desired speed. Once the voltage and current are adjusted, the controller keeps them you set as long as the motor is within its rated operating range.

The device also incorporates an 8-bit digital to analog converter (DAC) that allows the user to adjust the motor control parameters such as acceleration, deceleration, speed, and torque. This is done using the digital control registers and is particularly useful when it comes to customizing the motor performance for specific drive applications.

In addition, the device offers a variety of protection and safety features, such as overvoltage and undervoltage protection, thermal protection, and lock-lock protection. This helps ensure that the motor stays within its rated operating range, even in difficult environmental conditions.

Conclusion

To sum things up, the FAN6290QFMX from Fairchild Semiconductor is an excellent motor drive solution for powering 3-L-A-G brushed DC motors. It utilizes a current-mode control loop, an 8-bit digital-to-analog converter, and adjustable motor control parameters, enabling it to deliver robust and reliable performance even in challenging conditions. The device is ideal for use in cost-sensitive applications that require 3-L-A-G drive capabilities and quiet operation with low EMI.

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