This circuit Boost DC Voltage without XL6009 PWM IC
(But it doesn't have Soft Start, OCP Circuit)
PWM Frequency : 62.5KHz
(Need adjusting in real circuit)
Start Current : 20A
(<10ms @ 100uF, 500mΩ)
INPUT : DC 12V @ 3A
OUTPUT : DC 24V @ 1A
* You can change output voltage to changing output feedback zener diode
* 500mΩ Resistor : Start Current Limit