FSFR2100XSL

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Modern electronics and systems - from 5G base stations to LEDs - need reliable and efficient power converters. Voltage regulators and current converters play an important role in producing a suitable power supply for key components. Fairchild\'s FSFR2100XSL is a member of its advanced AC/DC buck converter family, offering integrated high and low-side MOSFETs and dual-phase control to optimize high-performance power delivery.

The FSFR2100XSL works by regulating a steady high-updated voltage to a connected device. The circuit consists of an inductor, input rectifier bridge, output diode bridge, and output capacitor to form a flyback system. The input rectifier converts AC source power to DC, and the output diode bridge converts back-EMF generated by the inductor to AC for the output capacitor to store energy. The inductor stores energy in a magnetic field when current passes through it, converting energy from a AC current to a DC current.

The FSFR2100XSL\'s built-in MOSFETs deliver high efficiency and low losses. Its beneficial Dual-Phase behaviour optimises the converter output ripple and reduces input/output capacitance. Furthermore, the device exploits Fairchild\'s proprietary Control-Architecture, which leverages a high-switching frequency to reduce the size of the power converter components, resulting in increased power density and extended operating temperature range.

The FSFR2100XSL is suitable for low-power applications in the industrial, automotive, telecommunications, computing and consumer markets. It offers synchronous rectification, peak efficiency of 94%, 50-kHz to 1-MHz frequency range and output voltage range of 1.5V to 5.5V which is adjustable using an external resistor divider. It also features various system protection functions, such as output over-voltage protection, over-current protection, over-temperature protection, and soft-start mode.

The FSFR2100XSL is a high-efficiency, high-performance AC/DC synchronous buck converter and an excellent choice for low-power applications. Its integrated MOSFETs and advanced control architecture enable the device to deliver reliable, cost-effective and high-performance power delivery for a variety of applications.

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