I have built a 3V to 5V boost converter with discrete components.
L = 220uH
Vf(Diode) = 0.25V
C = 470uF
f = 47KHz
My load is a microcontroller board (M16C QSK62P Plus) that takes upto 90mA of current. I am using the PWM signal from the same microcontroller for the switching pulse for the converter. I tested my circuit for a constant load of R = 100Ohm
I measured average current flowing through the inductor and output voltage. From that I calculated powers Pin and Pout.
I am getting the efficiency of approx. 75%. I know that boost converters can be more efficient (90%). So, I need some suggestion about modifications in my circuit to improve the efficiency.