Refer to the given flyback converter circuit diagram If Vo i

Refer to the given flyback converter circuit diagram. If Vo is 5 V for a 5 ohm load resistor, Vin = 30 V , N1/N2 = 3 , the magnetizing inductance Lm1 = 500 uH, and switching frequency fs = 40kHz, calculate the duty ratio D, average Iin and Iout , and Iin(0) , Iin , Iout (0) , Iout as shown in the figure . Assume lossless conditions.

Solution

The duty cycle can be expressed as a ratio or as a percentage. Suppose a disk drive operates for 1 second, then is shut off for 99 seconds, then is run for 1 second again, and so on. The drive runs for one out of 100 seconds, or 1/100 of the time, and its duty cycle is therefore 1/100, or 1 percent.

D= (T/P )*100

T=PULSE DURATION

P=PERIOD OF PULSE

=60 PERCENT

AS given it should be in lossless condition

the inductive leakage and capacitive leakage should be neglected as mentioned

the diode is forward biased...so it flows through it

no.of turns ratio =3

30v is given as input

average would be of 2.5 volts

lin(t)=vin+(n1/n2)+c+v0=30+3+C(T)+5=38+c(T)

lin(o)=38