FAN7385MX Integrated Circuits (ICs)

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FAN7385MX Application Field And Working Principle

The FAN7385MX is a gate-driver integrated circuit, a special type of power management IC (PMIC) which provides the necessary voltage and current signal to the switches in power electronic systems due to it\'s power switch module. It is dedigned for high-voltage motor drives, including DC motors and AC motors, allowing for the efficient control of the switch power supply. It features a PWM input and a pair of output channels, enabling it to accept a variety of control signals from the system and drive the power switch accordingly. This paper will discuss the application field and working principle of the FAN7385MX gate driver.

Application Fields

The FAN7385MX is designed to be used in a variety of high-voltage systems, including those used in motor controls, solar power, and other power distribution systems. It is built to be used in the control of both DC and AC induction motors, as well as with digital controllers. The device is especially suitable for use in motor control systems with a requirement of a large switching power supply.

The FAN7385MX is also used in adjustable speed drives and solar power systems. The output channels allow for the control of both continuous and single-pulse operations, making them useful for soft-start and for controlling either transient or constant DC motor speeds. The device is also an excellent choice for controlling the frequency of the motor, allowing for the improved efficiency of the system.

Additionally, the FAN7385MX can be used in heaters, power tools and other industrial equipment. It offers a wide input voltage range and a high switching frequency, allowing for precise control of the motor power supply.

Working Principle

The FAN7385MX gate driver receives an input signal from the system, and then converts it into a gate voltage suitable for driving the switches in the power electronic circuitry. It is designed to provide two output channels, each one capable of providing either +12V or -12V maximum gate drive. The output current of the gate driver varies with the input voltage, and can be adjusted to match the current requirements of the power switches. This allows the system to adjust the voltage and current ratio needed to accurately control the power switch.

The device is designed to allow for the precise control of the motors current and speed. After receiving an input signal from the system, the FAN7385MX converts it into a gate voltage suitable for driving the motor switches. The output channels provide the necessary current to control both continuous and single-pulse operations, allowing for soft-start, controlling the transient and constant DC motor speeds, and frequency fine-tuning.

The FAN7385MX also features fault protection for the motor, allowing for the detection of an over current or over voltage conditions. This helps to protect the motor from damage and improves the safety of the system. Additionally, the device includes an internal temperature monitor, which allows the system to monitor the temperature inside the motor and ensure the optimal operation of the device.

Conclusion

The FAN7385MX is a powerful and highly versatile gate driver IC. It can be used in a variety of high-voltage motor drives, solar power systems, and other power distribution and motor control systems. Its dual output channels can provide up to +12V or -12V gate drive, and the device also includes several safety features, such as a fault protection and an internal temperature monitor. This allows the device to provide precise control and optimal operation of the system.

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