Hi everyone, I'm new to this forum.
I currently doing a project to create a zeta converter for solar panel application and my target output of the circuit are 12V and 100W if possible. I simulated my circuit using SIMULINK and fine it works well (for data collection to choose components).
However, I constructed the circuit myself and test using 12V as input, 12V pilot lamp as output load, and set the duty cycle as 50% (10kHZ) , the circuit shorted (input voltage drop from 12V to 4~5V) and MOSFET starting to heat up. I checked my circuit and component but everything seems fine to me.
I begin to doubt my current design has some problem that causes the inductor L1 to be shorted to the ground. (I swapped a new one and still occur ). Can anyone advise me on what I missed from my design?
Here is my circuit specifications:
Input voltage: 10~18V
Output voltage: 12V
Target output power: 100W
PWM frequency: 10kHZ , generated using Arduino UNO Timer1 from pin 9;
MOSFET: IRF9Z34N ; PMOS Vgs(th) = -2~-4V(max)
MOSFET Driver circuit: +12V switching using 2N3904; PWM signal from arduino pin 9 10kHZ;
Diode: MBR30100 CT; Vf = 0.86V;
Capacitor: Nichicon PW polarized capacitor series
C1 & C2 : 4700uF
C3: 470uF;
Inductor L1 & L2: 2mH (current rating: 12A);
really appreciate your help