60V, 23A N-channel — the conduction loss floor for a 12V/24V rail
The NP23N06YDG-E1-AY: The NP23N06YDG--AY is a 60V, 23A N-channel MOSFET from Nexperia in an 8-HSON flat-lead package with an exposed thermal pad. The headline Rds(on) of 27 mOhm max at 11.5 A, 10 V sets the conduction loss floor for the design.
Gate charge and drive voltage — sizing the gate driver
Total gate charge at 10 V is 41 nC. The drive voltage range is specified for both 5 V and 10 V logic levels.
Switching loss budget — input capacitance and the Miller plateau
Input capacitance Ciss is 1800 pF max at 25 V Vds. Vgs(th) max is 2.5 V at 250 µA.
Thermal management — 1 W in air, 60 W on a heatsink
Power dissipation is rated 1 W at 25°C ambient in still air (Ta) and 60 W at the case (Tc). The 8-HSON exposed pad is the primary thermal path — the datasheet assumes a copper land area under the pad to achieve the 60 W case rating. In a real layout with 1 oz copper and a 1-inch-square pad area, the effective RthJA lands somewhere between the two extremes. For continuous 11.5 A operation, the 3.6 W conduction loss requires a copper area that keeps the junction below 175°C.
