FST30100E3

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FST30100E3 Application Field and Working Principle

The FST30100E3 device is a rectifier array and is part of the larger family of Field-Stop Trench (FST) rectifiers from Fairchild Semiconductor. This family of rectifiers covers a wide range of operating conditions, from 400V to 800V, and current ratings ranging from 3A to 10A for single devices. FST30100E3 falls within this family of rectifier arrays and is suitable for use in the rectification of power supplies in a wide range of applications.

Device Overview

The FST30100E3 is a 4-phase rectifier array comprising of four independent rectifier circuits. These circuits are constructed such that each rectifier circuit is made up of an integrated pair of Field-Stop Trench MOSFETs and an integrated Schottky diode. All four circuits are integrated into a single package, allowing for connection and mounting to a user\'s application with a single component.

The FST30100E3 comes in a 4x2.1x1.3mm 6-pin UDFN package. Common features seen in other diode rectifier array packages, such as isolated thermal pad and robust package construction, are included in the FST30100E3. This allows the device to be used in applications without compromising on its rating or capabilities.

Functionality

The FST30100E3 device is designed for use as a rectification device in a variety of applications, including computing, communications, consumer electronics, automotive and industrial applications. This rectifier array has a low forward voltage drop of ≤ 400mV at a current rating of 8A. The device is rated for an operating junction temperature range of -40°C to 150°C and maximum power dissipation of 1.3W. It has a maximum peak fault condition of 8A with a maximum on-state resistance of 2Ω.

The FST30100E3 offers excellent thermal stability and short-circuit protection, allowing it to be used in a variety of different operating conditions. The device has an over temperature shutdown feature that limits the operating temperature of the device to a safe level. In addition, it features a soft-start capability that reduces the inrush current and helps protect against current shorting during start-up.

Working Principle

The FST30100E3 is a rectifier and rectifier array, meaning it converts AC current to DC current. This rectifier uses Field-Stop Trench (FST) MOSFETs for this purpose, which are integrated in pairs with a Schottky diode. The operation of the device is based on the modulation of the voltage across the MOSFETs. The MOSFETs act as switches that open and close to allow current to flow through the rectifier array as needed. This control of the MOSFETs is based on the voltage across them, which is modulated with the Schottky diode. This modulation of the MOSFET voltages is what allows the device to perform its rectification function, i.e. convert AC to DC current.

The FST30100E3 performs its rectification function at 50% to 100% efficiency, depending on the particular AC circuit and other conditions. The device can handle a maximum peak fault current of 8A, with a maximum on-state resistance of 2Ω. As mentioned earlier, the device also features an over temperature shutdown, soft-start capability and low forward voltage drop of 400mV or less at a current rating of 8A.

Applications

The FST30100E3 device is ideally suited for use in a variety of rectification applications, as well as other applications where high efficiency, reliable operation, and low forward voltage drop are desirable. Some of the applications the device is suitable for include voltage-regulated power supplies, DC-to-DC converters, switch-mode power supplies, motor control circuits and lighting systems.

The FST30100E3 is also suitable for use in automotive power systems, such as in the rectification of automotive battery systems. This device can also be used in secondary rectification circuits, where it can be used to rectify the AC output of a transformer and generate a low-cost, compact and reliable DC voltage for a variety of consumer electronics applications.

Conclusion

The FST30100E3 from Fairchild Semiconductor is a rectifier array designed for use in a wide range of rectification applications. It offers excellent thermal stability, low forward voltage drop, and short-circuit protection. The device is suitable for use in consumer electronics, automotive systems, computer, communications and lighting applications. This makes the FST30100E3 an ideal choice for applications where space or design considerations are important.

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