Hello guys, I have "designed" this theoretical circuit to convert any voltage up to 25 V to 12 V (And after that, 5 V & 3.3 V to make a full battery-powered ATX PSU)
For a single PSU, this is the theoretical circuit. I do not use any sort of overshoot protection because the 500 KHz clock generator is a placeholder for a PIC16 MCU, and I was thinking on making a software-controlled overshoot protection by simply ramping up the PWM signal slowly via software to ensure there isn't a substantial Ramp up to 19+ Volt (way out of spec for ATX maximum 13V limit I'd say).
However I'm only a stupid student and I'm not sure this is the actual way to do this, the circuit is not that complex, however there are way too many components for just one rail, and I was wondering if any of you big guys have a suggestion to either:
* Reduce component size
* Avoid Inrush current to reach something on the line of 100+ A (To reduce trace width size), since my maximum current should be 10 to 15 A.
* Correctly calculate Inductor and Capacitor values
* Any issue I'm overlooking or straight up not noticing.
Any suggestion is appreciated, I want to make this a full blown ATX PSU (10 A for 3.3V, 5 V and 12V foe ULP PC) for a project I've been longing to do.
For a single PSU, this is the theoretical circuit. I do not use any sort of overshoot protection because the 500 KHz clock generator is a placeholder for a PIC16 MCU, and I was thinking on making a software-controlled overshoot protection by simply ramping up the PWM signal slowly via software to ensure there isn't a substantial Ramp up to 19+ Volt (way out of spec for ATX maximum 13V limit I'd say).
However I'm only a stupid student and I'm not sure this is the actual way to do this, the circuit is not that complex, however there are way too many components for just one rail, and I was wondering if any of you big guys have a suggestion to either:
* Reduce component size
* Avoid Inrush current to reach something on the line of 100+ A (To reduce trace width size), since my maximum current should be 10 to 15 A.
* Correctly calculate Inductor and Capacitor values
* Any issue I'm overlooking or straight up not noticing.
Any suggestion is appreciated, I want to make this a full blown ATX PSU (10 A for 3.3V, 5 V and 12V foe ULP PC) for a project I've been longing to do.
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