Flyback Transformer Power Supply Calculator

Enter value and click on calculate. Result will be displayed.

Power Supply Specification

Frequency:
KHz
Time:
uS
Diode Voltage Drop:
V
Transistor Voltage Drop:
V
Efficiency:
%
Maximum Transistor Voltage:
V
AL=L/N2:
uH/Turns^2
Primary Voltage:
V
Voltage Output Vop1:
V
Current Output Iop1:
A
Power P1:
W

Secondary Windings

Voltage Output Vop2:
V
Current Output Iop2:
A
Power P2:
W
Voltage Output Vop3
V
Current Output Iop3:
A
Power P3:
W
Voltage Output Vop4:
V
Current Output Iop4:
A
Power P4:
W

Transformer Results:

Power Input Pin:
W
Turns Ratio Primary to Secondary N1:
Charge Period Tcp:
uS
Discharge Period Tdp:
uS
Dead Time Period Td:
uS
Primary Inductance:
uH
Turns Primary Np:
Turns
Turns Secondary Ns1:
Turns
Turns Secondary Ns2:
Turns
Turns Secondary Ns3:
Turns
Secondary Ns4:
Turns
Peak Primary Current:
A
Primary RMS Current:
A
Primary Wire Diameter:
mils
Primary Wire Gauge:
mils

A Flyback Transformer Power Supply Calculator is a tool — usually software or an online application — used to design and analyze flyback power supplies, which are a type of switched-mode power supply (SMPS). Flyback transformers step up or step down voltage while providing electrical isolation, making them common in applications like chargers, LED drivers, and low-power DC-DC converters.

This calculator helps determine key parameters for a flyback power supply, such as:

Primary and secondary winding turns
Core size and material
Duty cycle and switching frequency
Inductance values
Peak and RMS currents for windings
Output voltage and current
Power losses and efficiency
By inputting specs like input voltage, output voltage, output current, frequency, and transformer characteristics, the calculator provides optimized design values.