Powerelectronics Engineering

SiC MOSFET Gate-Charge-Based Turn-On Delay and Rise Time Estimator calculator

SiC MOSFET Gate-Charge-Based Turn-On Delay and Rise Time Estimator engineering calculator.

Runnable This tool can run, but independent engineering verification has not been established.

Quick Answer

Calculate SiC MOSFET Gate-Charge-Based Turn-On Delay and Rise Time Estimator

Calculator

Turn-On Delay and Rise Time (s)
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Result Interpretation

SiC MOSFET Gate-Charge-Based Turn-On Delay and Rise Time Estimator calculator computes Turn-On Delay and Rise Time in s using the defined engineering formula and the input values provided. Turn-On Delay and Rise Time is expressed in s. No universal acceptance threshold is defined by this calculator.

Worked Example

Verified calculation

Given:

  • Gate Threshold Charge = 1.2E-8
  • Miller Plateau Charge = 2.8E-8
  • Reverse Recovery Charge = 1.5E-8
  • Peak Gate Drive Current = 2.5
  • Gate Resistor = 4.7
  • Gate Drive Voltage = 15
  • MOSFET Threshold Voltage = 4

Expected Result:

  • Turn-On Delay and Rise Time = 1.9204545454545E-8

Engineering Interpretation:

Under the given input conditions, the calculated result is: Turn-On Delay and Rise Time = 1.9204545454545E-8 s.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.

Formula / Method

turn-on delay and rise time = (gate threshold charge / peak gate drive current) + (miller plateau charge / peak gate drive current) + (0.5 * reverse recovery charge * gate resistor / (gate drive voltage - mosfet threshold voltage))

Formula family: formula_powerelectronics_sic_mosfet_gate_charge_based_turn_on_delay_and_rise_time_estimator

Variables

SymbolLabelRoleDescription
Q_gth Gate Threshold Charge INPUT Gate Threshold Charge
Q_gv Miller Plateau Charge INPUT Miller Plateau Charge
Q_rr Reverse Recovery Charge INPUT Reverse Recovery Charge
I_gate_peak Peak Gate Drive Current INPUT Peak Gate Drive Current
R_g Gate Resistor INPUT Gate Resistor
V_drive Gate Drive Voltage INPUT Gate Drive Voltage
V_th MOSFET Threshold Voltage INPUT MOSFET Threshold Voltage
result Turn-On Delay and Rise Time OUTPUT Turn-On Delay and Rise Time

Calculation Steps

  1. Enter the gate threshold charge in C.
  2. Enter the miller plateau charge in C.
  3. Enter the reverse recovery charge in C.
  4. Enter the peak gate drive current in A.
  5. Enter the gate resistor in ohm.
  6. Enter the gate drive voltage in V.
  7. Enter the mosfet threshold voltage in V.
  8. Step 1: Compute turn-on delay and rise time.
  9. Read the turn-on delay and rise time (s) from the results.

Engineering Summary

Calculate SiC MOSFET Gate-Charge-Based Turn-On Delay and Rise Time Estimator

Frequently Asked Questions

What does this calculator calculate?

The SiC MOSFET Gate-Charge-Based Turn-On Delay and Rise Time Estimator calculator estimates Turn-On Delay and Rise Time based on the input parameters you provide

Why is gate threshold charge important in this calculation?

gate threshold charge is directly proportional to turn-on delay and rise time. When you enter gate threshold charge in C, the calculator uses it in the engineering formula to compute the output

How should I interpret the result turn-on delay and rise time?

The calculator outputs turn-on delay and rise time in s. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Gate Threshold Charge (C), Miller Plateau Charge (C), Reverse Recovery Charge (C), Peak Gate Drive Current (A), Gate Resistor (ohm), Gate Drive Voltage (V), MOSFET Threshold Voltage (V). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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