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THE FEUTEX TOOLKIT

MOSFET Gate-Drive Charge Budget

Estimate average gate-drive load and charge-delivery time.

Electronics workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaIavg=Qg fs; P=Qg Vg fs; t≈Qg/I
Sources and model references

Worked example

Inputs

Total gate charge
5e-08 C
Gate swing
10 V
Switch frequency
100000 Hz
Available charge current
1 A

Expected results

Average gate current
0.005 A
Drive power
0.05 W
Charge time estimate
5e-08 s

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter the labeled inputs in the indicated units.
  2. Calculate and compare every output against the stated model assumptions.

Try this example

{
  "q": 5e-8,
  "u": 10,
  "f": 100000,
  "i": 1
}

Accuracy and scope

Gate charge must match operating voltage; constant-current time ignores Miller-plateau details. Simplified analytical model; not a design recommendation or safety certification.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.