Sketch the circuit diagram of the " Flyback" converter switch-mode dc power supply and shortly describe the operation thereof.
The average (or dc) output voltage of the flyback circuit in question: 3.2 is Vo = 30V at a resistive load of R = 0.9 Ohm.
The duty-cycle ratio is k = 40% and the switching frequency is f = 900Hz.
The ON-state voltage drops of transistors and diodes are Vt = 0.7V, respectively.
The turns ratio of the transformer is a= Ns/Np = 0.25.
Neglect the losses in the transformer, and the ripple current of the load and determine.
(a) the average input current;
(b) the efficiency;
(c) the average transistor current;
(d) the peak transistor current;
(e) the rms transistor current;
(f) the open-circuit transistor voltage;
(g) the primary magnetizing inductor.
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