Design & Reliability
How to Check MOSFET Lambda in LTspice
In LTspice, MOSFET lambda is a model-dependent channel-length-modulation parameter; inspect the actual model and extract an effective value from output curves when no explicit LAMBDA…
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Design & Reliability
How to Attach a Heatsink to a MOSFET
Attach a heatsink to a MOSFET with a flat clean interface, the correct thermal material and electrical insulation, controlled clamping force, and verified junction temperature.
Design & Reliability
How to Protect a MOSFET From dV/dt
Protect a MOSFET from dV/dt by controlling switch-node slew rate, minimizing parasitic coupling, strengthening turn-off, clamping the gate, and verifying waveforms under worst-case conditions.
Design & Reliability
Do MOSFETs on an RX 580 Need Cooling?
RX 580 graphics-card VRM MOSFETs need an effective thermal path, normally through thermal pads into the card's heatsink or a dedicated VRM plate with airflow.
Design & Reliability
How Do Heat Sinks Cool MOSFETs?
A heatsink cools a MOSFET by conducting heat from the junction through the package and interface, spreading it through metal, and transferring it to moving…
Design & Reliability
Can You Operate a Power MOSFET Close to Gate-Oxide Breakdown?
Do not operate a power MOSFET close to its gate-oxide breakdown or absolute maximum gate voltage; use recommended drive levels, transient margin, clamps, and low-inductance…
Design & Reliability
Can Multiple MOSFETs Share the Same Heatsink?
Multiple MOSFETs can share one heatsink when electrical isolation, total power loss, thermal interaction, mounting pressure, creepage, and the hottest junction temperature are all verified.
Design & Reliability
Are SiC MOSFETs Susceptible to Radiation?
SiC MOSFETs are not immune to radiation. Heavy ions, protons, neutrons, and total ionizing dose can cause leakage shifts, gate degradation, or destructive single-event burnout,…