FAN7621SJX

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Today, many industries are using various types of power management ICs (PMICs) to ensure the power delivery and energy efficiency of their device, and that includes FAN7621SJX. FAN7621SJX is a fixed output power supply solution designed for offline AC-DC switching applications such as adapter, Open Frame and PoE. It integrates with an internal 800 V power MOSFET, thereby eliminating the need for an external Schottky, and eliminating the use of the optocoupler and heat sinking elements, too. This makes the solution cost effective and reliable.

FAN7621SJX belongs to PMIC – AC DC Converters, Offline Switchers category. It\'s a fixed output voltage solution with a wide range of features. It has a wide input voltage range and is able to provide a comprehensive protection feature set that includes over-voltage, under-voltage, over-current, over-temperature and active clamping protection. FAN7621SJX supports a maximum input voltage of 277Vac and a maximum output current of 1.5A. It comes with a sleep mode and can operate up to 98.5% efficiency.

The working principle of FAN7621SJX is fairly simple. It contains a primary side controller, a secondary side controller, a power MOSFET, and passive components. The primary controller is responsible for the PFC (power factor correction) and the rectification of the AC input voltage. The secondary side controller performs the voltage regulation and power protection functions, along with the active voltage clamping. The MOSFET is used as a switch to step down the high AC voltage to a lower DC voltage. The passive components are responsible for protecting the circuits from overload, overheating, and overvoltage.

The most common applications of FAN7621SJX include adapters, Open Frame and PoE. As mentioned earlier, its integrated power MOSFET eliminates the need for an external Schottky, which helps keep the cost down. It also supports a wide input voltage range and is able to provide comprehensive protection features, making it an ideal choice for AC-DC switching applications. And because of its sleep mode, FAN7621SJX can operate more efficiently. This makes it an excellent choice for energy-saving applications.

To summarize, FAN7621SJX is a fixed output power supply solution designed for offline AC-DC switching applications such as adapters, Open Frame and PoE. Its integrated power MOSFET eliminates the need for an external Schottky and its wide input voltage range and comprehensive protection feature set makes it a cost-effective and reliable solution. Its sleep mode also helps make it an ideal choice for energy-saving applications.

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