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LMZ14203H: WEBENCH design not working in PSPICE

Subhadeep Kumar
Prodigy 10 points
Part Number: LMZ14203H

Hello,

I am using the LMZ14203HTZ/NOPB DC-DC converter to get 7.5V output with maximum current output of 3A from an input voltage range of 19.8V to 25.2V.

I got the circuit from the WEBENCH designer. The details of the circuit can be found at the following link. I attached a PDF copy with all the details also. Kindly check for reference.

I need to include this circuit in my overall design and check the design performance. So, I was making the circuit in the PSPICE for TI software. The schematic file can be found in the following link. I have attached a PDF copy of the schematic. Kindly check for reference.

Unfortunately, I am not getting 7.5V output from the output PIN in the PSPICE design. I have attached the plots of the input and output voltage. Please check.

Can anyone suggest what the issue could be?

Thanks,

Subhadeep

LMZ14203H_7.5V@3A-WEBENCH.pdfLMZ14203H_7.5V@3A-PSPICE_with EN.pdf