55V, 17A N-channel HEXFET in DPAK
The Infineon AUIRLR024NTRL is a 55V, 17A N-channel power MOSFET from the HEXFET series, housed in a DPAK surface-mount package. It is specified with a maximum on-resistance of 65 mOhm at Vgs=10V and Id=10A, and a gate charge of 15 nC at Vgs=5V — numbers that define the conduction and switching losses for a given duty cycle and frequency.
Junction temperature and operating envelope
The 45 W power dissipation ceiling sets the thermal budget for the PCB copper area under the DPAK tab.
Gate drive and switching
With a maximum gate threshold voltage of 2 V at 250 µA and a ±16 V gate-source rating, the AUIRLR024NTRL is compatible with 5 V and 3.3 V logic-level gate drivers. The 15 nC total gate charge at 5 V means a driver sourcing 1 A can switch the gate in about 15 ns — fast enough for PWM frequencies in the tens of kHz without excessive cross-conduction.
