600 V N-channel in a DPAK — where the MDmesh™ II Plus fits
This is a 600 V class part, so it is aimed at offline power conversion: flyback converters for AC-DC adapters and chargers, PFC boost stages, auxiliary power supplies in industrial and telecom gear, and LED lighting drivers.
780 mOhm Rds(on) — the conduction loss anchor
That is the number to use for worst-case conduction loss calculations at 25 °C junction — expect it to roughly double at 125 °C junction, which is the normal operating point in a power supply. A 1-inch-square pad on a 2-oz copper board can dissipate roughly 2-3 W before the junction hits 100 °C — that translates to about 1.6 A continuous at 780 mOhm. For higher currents, a heatsink on the tab or forced airflow is needed.
10 nC gate charge — light load on the driver
This means the gate driver only needs to source and sink about 10 nC per switching cycle. The low Qg also keeps the Miller plateau short, reducing the switching loss during the voltage-rise and current-fall overlap. Input capacitance is 320 pF at 100 V drain-source bias. That capacitance charges and discharges through the gate resistor and driver output impedance, setting the turn-on and turn-off delay times. For a typical 10-ohm gate resistor, the RC time constant is about 3.2 ns — fast enough for switching frequencies up to several hundred kilohertz without excessive ringing, provided the PCB layout keeps the gate loop tight.
The base product number is STD9N60, which covers a family of variants in different packages and tape/reel options. The M2 suffix identifies this as the MDmesh™ II Plus generation, offering improved switching performance and lower Rds(on) compared to the earlier MDmesh™ generation.