This document describes the features and characteristics of the FDH15N50 / FDP15N50 / FDB15N50 products, which are suitable for switch mode power supplies (SMPS). The products have features such as low gate charge, improved gate, avalanche and high reapplied dv/dt ruggedness, reduced rDS(ON), reduced Miller capacitance and low input capacitance, improved switching speed with low EMI, and a rated junction temperature of 175°C.
This document is a datasheet for the Fairchild Semiconductor FDH15N50, FDP15N50, and FDB15N50 series of N-Channel SMPS Power MOSFETs. These devices are designed for use in switch mode power supplies (SMPS) including PFC Boost, Forward Converter, Flyback Converter, and Buck Converter topologies. Key features include low gate charge for simple drive requirements, ruggedness against avalanche and high dv/dt, and a rated junction temperature of 175°C.
| Drain to Source Voltage | 500 V |
|---|---|
| Continuous Drain Current (Tj = 25°C) | 15 A |
| Power Dissipation | 300 W |
| Operating and Storage Temperature | -55 to 175 °C |
| Drain to Source On-Resistance | 0.38 Ohm |
| Total Gate Charge | 41 nC |
| Thermal Resistance Junction to Case | 0.50 °C/W |
These devices are intended for use in Switch Mode Power Supplies (SMPS), including PFC Boost, Two-Switch Forward Converter, Single Switch Forward Converter, Flyback Converter, and Buck Converter.