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FFAF05U120DNTU Application Field and Working Principle

The FFAF05U120DNTU is a 6-pin dual-common cathode Schottky rectifier array module. It has low on-state voltage drop and high power efficiency, while remaining soft switching. This rectifier can be used in a variety of high-frequency rectification and signal conditioning applications, especially in DC power supplies, battery power supplies, UPS power supplies, and high-voltage/high-frequency DC-to-DC converters. The FFAF05U120DNTU has a common cathode configuration and includes two independently controlled Schottky rectifiers.

Working Principle

The Schottky rectifier is basically a diode composed of a junction between two semiconductor materials and a metal contact, which forms a reverse breakdown voltage lower than the PN junction. The two semiconductor materials typically consist of a heavily doped semiconductor and a less heavily doped semi-conductor. The lower-than-normal reverse breakdown voltage of the Schottky diode means that the voltage output has lower losses and higher efficiency when used as a rectifying element. Schottky diodes typically have forward voltage drops of 0.15 volts to 0.45 volts while the FFAF05U120DNTU has a voltage drop of only 25 mV.

The FFAF05U120DNTU module consists of a pair of Schottky diodes connected in series. This connection allows for two rectifying circuits in one component. The first diode rectifies the input voltage at the cathode of the diode, while the second diode performs the opposite of the first, i.e. rectifies the inverse of the input voltage. The combined result is a doubling of the output current over that found with a single diode. This arrangement also reduces the average on-state voltage of the rectified waveform, thus resulting in increased efficiency.

Advantages

The FFAF05U120DNTU has a low voltage drop and high power efficiency, while providing soft switching. This device offers several other advantages, including:

• It greatly reduces power losses in high-frequency rectification and signal conditioning systems.
• It can be used in a variety of power applications, including DC power supplies, battery power supplies, UPS power supplies, and high voltage/high frequency DC-to-DC converters.
• It has a common cathode configuration allowing for two independent rectifying circuits in one component.
• It has an excellent forward current conduction capability.
• It has a temperature range of -55°C to 150°C.

Conclusion

The FFAF05U120DNTU is a 6-pin dual-common cathode Schottky rectifier array module designed for high-frequency rectification and signal conditioning applications. It provides low on-state voltage drop and high power efficiency while remaining soft switching. The FFAF05U120DNTU is a highly efficient and reliable device, offering the advantages of a low voltage drop and high power efficiency. Its temperature range of -55°C to 150°C is a further benefit.

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