(12) Boost boost circuit simulation and engineering application cases
1.Boost circuit simulation case
Indicator parameters: input voltage 5V, output voltage 12V, output current 1A, switching frequency 10kHz, voltage ripple 0.5%.
Determine the measurement parameters of each key component in CCM mode based on the input index parameters:
Load resistance Rl=12R
Duty cycle D=65%
Period Ts=0.1ms
The inductance value L is calculated according to the formula:
L=48uH, let the inductor work in CCM, so the inductor value L=60uH.
The output filter capacitor is calculated according to the formula:
Co=1mF, to make the voltage ripple less than 0.5%, the output capacitor value Co=2.2mF.
The simulation circuit model is shown in the figure:
The output waveform is as shown in the figure: