Hi,
I have built a buck convertor circuit in Pspice for TI which is shown in below:
R3 is 33 ohm and R4 is 1K
But I got a wrong result, the simulation result is shown in below:
Although the mosfet has a correct PWM input, but the mosfet doesn't have a correct PWM output. So the buck convertor doesn't have a correct voltage output.
I try to remove the LC circuit in the convertor to test the mosfet, and I found that the mosfet can output a correct PWM output without LC circuit, but after I add the LC circuit, the mosfet output is incorrect.
I don't know what's wrong with it.
This link can download the simulation source file if you want:
https://gear-line.synology.me:4001/d/s/sjfOYLmpsWEVkuYjRHqDPrQdutWULnC2/...
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