MOSFETsAvailable
MOSFET Conduction Loss Calculator
Estimate hot RDS(on), RMS current, and conduction loss with duty cycle and parallel devices.
Calculator category
MOSFET Calculators
MOSFET calculators help engineers evaluate power switching devices during hardware design. They focus on conduction loss, gate drive behavior, thermal margin, and package-level constraints that affect power converters, motor drivers, load switches, and protection circuits.
Available Calculators
10
Engineering Applications
4
Calculators
Each listed tool links to a working calculator with engineering inputs, formulas, examples, notes, and related resources.
MOSFETsAvailable
MOSFET Gate Resistor Calculator
Estimate gate current, external resistance, switching time, and gate-drive energy.
MOSFETsAvailable
MOSFET Switching Loss Calculator
Estimate turn-on, turn-off, per-cycle energy, and switching power loss.
MOSFETsAvailable
MOSFET Total Power Dissipation Calculator
Combine conduction, switching, and gate-drive loss with junction-temperature and thermal-margin estimates.
MOSFETsAvailable
MOSFET Junction Temperature Calculator
Estimate junction temperature and thermal margin, or solve maximum power and required θJA.
MOSFETsAvailable
MOSFET Gate Drive Power Calculator
Calculate gate energy, driver power, average gate current, device count, and efficiency effects.
MOSFETsAvailable
MOSFET Safe Operating Area Calculator
Check SOA margin or calculate maximum current and voltage from device boundaries.
MOSFETsAvailable
MOSFET Parallel Current Sharing Calculator
Estimate current imbalance, worst-case device current, RDS(on) mismatch, and conduction loss.
MOSFETsAvailable
MOSFET Thermal Resistance Calculator
Calculate total thermal resistance, junction temperature, and required heatsink θSA.
MOSFETsAvailable
MOSFET Efficiency Calculator
Combine conduction, switching, and gate-drive loss to estimate power-stage efficiency.
How to Use These Calculators
Start From the Engineering Question
Choose the calculator that matches the decision you need to make: decode a component marking, size a value, check a frequency response, estimate loss, or verify a safety margin. A category page is useful only when it helps you reach a working tool, so this page lists released calculators only.
Check Units and Assumptions
Calculator results depend on unit choices, idealized formulas, tolerance, temperature, frequency range, and component limitations. Review the formula and engineering notes on each calculator page before using the result in a schematic, BOM, or PCB layout.
Validate Against Real Parts
Use the calculated value as a design reference, then confirm it against datasheets, derating curves, layout parasitics, measurement conditions, and manufacturer limits. The related guides below provide background when a calculation needs more context.
Engineering Applications
Power Switching
Motor Drivers
Load Switches
Thermal Design
Related Engineering Guides
Engineering Guide
MOSFET Double-Pulse Testing: Measuring Switching Energy and Loss
Measure Eon and Eoff with aligned voltage and current probes, controlled double pulses, and documented operating conditions.
11 min · Advanced
Engineering Guide
Parallel MOSFET Current Sharing: Static Balance, Gate Drive, Layout, and Thermal Design
Design parallel MOSFET banks using static conductance spread, source ballast, common-source inductance, individual gate resistors, thermal coupling, symmetric layout, and measured branch current.
18 min · Advanced
Engineering Guide
MOSFET SOA and Thermal Design: Loss, Transient Impedance, Avalanche, and Derating
Design MOSFET power stages using complete loss budgets, junction temperature, thermal paths, transient Zθ, linear and pulsed SOA, avalanche limits, derating, and measurement.
19 min · Advanced
Engineering Guide
MOSFET Gate Drive Design: Gate Resistance, Charge, Miller Effect, and Switching Loss
Design MOSFET gate-drive loops across charge, Miller plateau, source/sink current, resistance, switching loss, false turn-on, layout, EMI, and verification.
18 min · Advanced
Engineering Guide
How to Choose the Right MOSFET
Choose MOSFETs by application, VDS, drain current, actual gate voltage, RDS(on), gate charge, switching frequency, driver capability, power loss, thermal design, package, SOA, and layout.
20 min · Intermediate
Engineering Guide
Understanding MOSFETs
Learn how MOSFETs work, including N-channel and P-channel operation, gate threshold voltage, RDS(on), drain current, VGS, switching losses, power dissipation, gate charge, body diode behavior, thermal limits, SOA, and key datasheet parameters.
18 min · Beginner
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