Powerelectronics Engineering

PFC Boost Stage Thermal Dissipation Calculator

PFC Boost Stage Thermal Dissipation Calculator engineering calculator.

Quick Answer

Calculate PFC Boost Stage Thermal Dissipation Calculator

Calculator

Thermal Dissipation Power (W)
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Result Interpretation

PFC Boost Stage Thermal Dissipation Calculator computes Thermal Dissipation Power in W using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • Switching Frequency = 65000
  • Average Duty Cycle = 0.6
  • MOSFET Turn-Off Time = 8.0E-9
  • MOSFET Turn-On Time = 4.0E-9
  • MOSFET On-Resistance = 0.03
  • Maximum Input Voltage = 230
  • Average Output Current = 2.5
  • Diode Forward Voltage = 1.1
  • MOSFET RMS Current = 3

Expected Result:

  • Thermal Dissipation Power = 1.59425

Engineering Interpretation:

Under the given input conditions, the calculated result is: Thermal Dissipation Power = 1.59425 W.

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

Formula / Method

thermal dissipation power = (mosfet rms current * mosfet rms current * mosfet on-resistance) + (maximum input voltage * average output current * switching frequency * (mosfet turn-on time + mosfet turn-off time) / 2.0) + (diode forward voltage * average output current * (1.0 - average duty cycle))

Formula family: formula_powerelectronics_pfc_boost_stage_thermal_dissipation_calculator

Variables

SymbolLabelRoleDescription
I_rms_mosfet MOSFET RMS Current INPUT MOSFET RMS Current
R_ds_on MOSFET On-Resistance INPUT MOSFET On-Resistance
V_in_max Maximum Input Voltage INPUT Maximum Input Voltage
I_out_avg Average Output Current INPUT Average Output Current
f_sw Switching Frequency INPUT Switching Frequency
t_rise MOSFET Turn-On Time INPUT MOSFET Turn-On Time
t_fall MOSFET Turn-Off Time INPUT MOSFET Turn-Off Time
V_f_diode Diode Forward Voltage INPUT Diode Forward Voltage
D_avg Average Duty Cycle INPUT Average Duty Cycle
thermal_dissipation_power Thermal Dissipation Power OUTPUT Thermal Dissipation Power

Calculation Steps

  1. Enter the mosfet rms current in A.
  2. Enter the mosfet on-resistance in ohm.
  3. Enter the maximum input voltage in V.
  4. Enter the average output current in A.
  5. Enter the switching frequency in Hz.
  6. Enter the mosfet turn-on time in s.
  7. Enter the mosfet turn-off time in s.
  8. Enter the diode forward voltage in V.
  9. Enter the average duty cycle in 1.
  10. Step 1: Compute thermal dissipation power.
  11. Read the thermal dissipation power (W) from the results.

Engineering Summary

Calculate PFC Boost Stage Thermal Dissipation Calculator

Frequently Asked Questions

What does this calculator calculate?

The PFC Boost Stage Thermal Dissipation Calculator estimates Thermal Dissipation Power based on the input parameters you provide

Why is mosfet rms current important in this calculation?

mosfet rms current is directly proportional to thermal dissipation power. When you enter mosfet rms current in A, the calculator uses it in the engineering formula to compute the output

How should I interpret the result thermal dissipation power?

The calculator outputs thermal dissipation power in W. For larger power values, divide by 1000 to express the result in kW, or by 745.7 for horsepower. 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: MOSFET RMS Current (A), MOSFET On-Resistance (ohm), Maximum Input Voltage (V), Average Output Current (A), Switching Frequency (Hz), MOSFET Turn-On Time (s), MOSFET Turn-Off Time (s), Diode Forward 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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