# 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
What is a flyback power transformer

The flyback power transformer is a transformer used for DC power supply. It generates high-frequency pulses by periodically cutting off the input power supply, and then converts the required voltage to the output through the transformer. This type of transformer is commonly used in electronic equipment such as computers, televisions, mobile phones, etc.

When calculating the flyback power transformer, we need to consider the following key parameters: input voltage (Vin), output voltage (Vout), input current (Iin), output current (Iout), transformer ratio (N) and switch The on-time (Ton) and off-time (Toff) of the tube, etc.

We need to determine the transformation ratio of the transformer. The transformation ratio refers to the ratio between the input voltage and the output voltage, usually represented by N. The calculation formula of the transformation ratio is:

N=Vout/Vin

Next, we need to calculate the relationship between the input current and the output current. According to the law of conservation of energy, input power is equal to output power. The power calculation formula is:

Pin = Vin * Iin

Pout = Vout * Iout

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