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Ideal Forward Converter Calculator — result sheet
Estimate forward-converter output voltage and target duty cycle from input voltage, transformer turns ratio, and diode drop.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Vout + Vdiode = D·(Ns/Np)·Vin.
A forward converter transfers transformer energy to the output during the switch-on interval. This ideal relation exposes the direct duty-cycle and turns-ratio scaling and then subtracts a simple output-diode drop, giving a transparent planning model before losses, reset behavior, magnetics, filtering, and control limits are designed.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Input voltage — V; minimum 1.0E-6; maximum 10000000
- Target output voltage — V; minimum 1.0E-6; maximum 10000000
- Entered duty cycle — %; minimum 1.0E-6; maximum 99.999999
- Secondary-to-primary turns ratio Ns/Np — ratio; minimum 1.0E-6; maximum 1000000
- Output diode drop — V; minimum 0; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Input voltage | 24 |
| Target output voltage | 12 |
| Entered duty cycle | 50 |
| Secondary-to-primary turns ratio Ns/Np | 1 |
| Output diode drop | 0.7 |
The ideal forward estimate is 11.3 V at 50% duty; about 52.92% duty is needed for 12 V in this model.
Assumptions and limits
- The transformer is represented by an ideal turns ratio and the converter is modeled in its forward-transfer interval.
- The output diode drop is fixed and semiconductor, winding, switch, inductor, and core losses are omitted.
- The result is not a safety, thermal, magnetics, current-limit, reset-winding, or compensation design.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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