FAN7393AM

A PMIC (Power Management IC) is a chip that is used to control a systems power supply, which is one of the most important aspects in many electronic designs. Gate drivers are a type of PMIC that adapt a low-level input signal to the Gate Drain within a MOSFET or power transistor device. Fan7393am is one such example. It is designed to drive the top-side of an N-Channel MOSFET mainly used in synchronous rectification DC-DC converters.

The Fan7393am is made with a 6.1V drive voltage and is capable of source and sink currents of up to 7 A. It can operate at up to 500kHz frequency, which makes it suitable for many low voltage DC-DC synchronous buck converters. It has integrated protection features that help manage the power by setting an upper and a lower threshold for overcurrent, overvoltage and overtemperature conditions.

The device offers a built-in logic that senses the MOSFET driving low, when the voltage applied at the output is above the upper voltage threshold, and drives the MOSFET high when the voltage applied is below the lower voltage threshold. This feature helps to provide a smooth transition between the pull-up and pull-down of the device’s output. It also actively helps to reduce any ringing and overshoot during the device’s operation.

The Fan7393am is mainly used in DC-DC Power converters and switching regulators. It offers a wide range of applications in the automotive, industrial and consumer markets. Here are some of its most common applications:

• Switching supplies for Automotive, Industrial and Commercial applications
• High frequency step down DC-DC converters
• Power over Ethernet (POE) systems
• Wireless and portable devices

The working principle of the Fan7393am is simple and efficient. It consists of two MOSFETs that are connected together in a back to back configuration. One MOSFET is connected to the device’s input and the other is connected to the output. The gate driver switches the gate of the MOSFETs to pull the output either high or low. The output is also connected to a voltage divider network which is used to sense the output voltage and provide feedback to the device’s circuitry, which is then used to determine when to switch the MOSFETs.

The Fan7393am is a highly versatile and reliable gate driver PMIC designed to drive the top-side of an N-Channel MOSFET mainly used in synchronous rectification DC-DC converters. It offers a wide range of applications in the automotive, industrial and consumer markets due to its low voltage, high frequency and integrated protection features. The working principle is also simple and efficient which helps to enhance the performance and reliability of the device.