Hi,
I am doing a project on Buck converter. I tried to simulate the power stage of a buck converter. I tried with asynchronous Buck converter with PMOS switch. But I faced problem in the switching section of the buck converter which is performed by an NMOS/PMOS. Later I tried to simulate just a single MOSFET and the switched output is as desired but if I use it in the Buck circuit, the Vsw(switched voltage) is not as desired.
The LT-spice files and the waveforms are attached. Please guide me to use proper MOSFET switch for the buck converter for both synchronous and asynchronous buck converter.
The designed values are for the specifications
Vin= 12 V
VOUT= 5 volts
ILOAD= 2 amps
Fsw= 400 KHz
I am doing a project on Buck converter. I tried to simulate the power stage of a buck converter. I tried with asynchronous Buck converter with PMOS switch. But I faced problem in the switching section of the buck converter which is performed by an NMOS/PMOS. Later I tried to simulate just a single MOSFET and the switched output is as desired but if I use it in the Buck circuit, the Vsw(switched voltage) is not as desired.
The LT-spice files and the waveforms are attached. Please guide me to use proper MOSFET switch for the buck converter for both synchronous and asynchronous buck converter.
The designed values are for the specifications
Vin= 12 V
VOUT= 5 volts
ILOAD= 2 amps
Fsw= 400 KHz
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