The document introduces a Fairchild semiconductor product called FDH44N50. This product is an N-channel SMPS power MOSFET with features such as 44A continuous drain current, 500V drain-to-source voltage, and 0.12 Ohm on-resistance. It is suitable for various switch mode power supply applications, such as PFC Boost, Two-Switch Forward Converter, Single Switch Forward Converter, Flyback Converter, Buck Converter, and high-speed switching. The product features low gate charge Qg, improved gate, avalanche and high reapplied dv/dt ruggedness, reduced on-resistance, reduced Miller capacitance and low input capacitance, improved switching speed with low EMI, and a rated junction temperature of 175°C.
This document provides technical specifications and application information for the Fairchild Semiconductor FDH44N50. It is an N-Channel SMPS Power MOSFET rated at 44 Amperes continuous drain current and 500 Volts drain-to-source voltage, housed in a JEDEC TO-247 package.
The datasheet details the device's suitability for various switch-mode power supply topologies, including PFC Boost, Forward Converter, Flyback, and Buck converters. Key features highlighted include low gate charge requirements, improved ruggedness against avalanche and high dv/dt stress, reduced Miller capacitance, and a junction temperature rating of 175°C.
| Continuous Drain Current (Tj=25°C) | 44 A |
|---|---|
| Drain to Source Voltage | 500 V |
| On-Resistance (Typical) | 0.12 Ohm |
| Package Type | JEDEC TO-247 |
| Operating Junction Temperature | -55 to 175 °C |
The device is rated for a maximum junction temperature of 175°C.
The maximum power dissipation is 750 W.