FSFR1700HS

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Power Management Integrated Circuit (PMIC) refers to the integrated circuit that can provide a variety of power supply functions by combining the various power management functions necessary for the operation of the semiconductor device. The range of PMIC products can effectively reduce the power management complexity of the entire system and increase the efficiency and reliability of the system.

The FSFR1700HS is a P-channel enhancement mode power field effect transistor (FET) with a low on-resistance of 0.48 Ohms and a maximum drain-source voltage of 30V. It is designed for use in the electrically isolated offline switch with the resistance transformer mode topology. In this topology, the secondary side resistance is sensed with a resistor divider to adjust the output voltage level. It is suitable for AC/DC converters, offline switchers, solar panel drivers, LED lighting, and other dimming drivers.

The FSFR1700HS is an example of an AC/DC converter, a type of power conversion system which is used to convert an AC source, such as a line-frequency mains, to a DC voltage and current source. AC/DC converters are used in applications such as consumer electronics, power horticulture, industrial automation, and many others. In AC/DC converters, a rectifying stage is used to convert the AC energy into DC, and then a DC-DC converter is used to regulate the output.

It also belongs to an offline switcher which is a type of power conversion system designed for use in applications where the input power is not always available and the output must be provided in a timely manner. Offline switcher\'s are commonly implemented in uninterruptable power supply (UPS) systems which are used to protect against power failures. In an offline switcher, the input AC source is rectified and regulated using a high frequency oscillation generator (HFOG) which is then used to turn on and off a primary side switch.

The working principle of FSFR1700HS is based on the voltage divider principle. As the current through the resistor divider increases, the voltage across each resistor will change accordingly. This increases or decreases the voltage on gate of the transistor which in turn adjusts the output voltage. Therefore, by controlling the current through the resistor divider, the output voltage can be precisely regulated and thus, the voltage accuracy can be maintained.

In conclusion, the FSFR1700HS is a P-channel enhancement mode power field effect transistor, designed for use in electrically isolated offline switch with resistance transformer mode topology, suitable for AC/DC converters, offline switchers, solar panel drivers, LED lighting, and other dimming drivers. This PMIC product is based on the voltage divider principle and can be used to precisely regulate the output voltage and maintain the voltage accuracy.

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