LM5575: Vout not getting properly

Srinivasu V

Part Number: LM5575

Hello,

I am trying to simulate the LM5575 Pspice model. Feedback resistors calculated for 15V output. But in simulation output, I am finding variation in Vout. and I am not getting exact 15V. It is showing Peak 15.8V min 15.3V.

Please find the attached simulation results and schematic.

My requirements is : Vin : 18V to 36V and Vout : 15V/1.5A

over 4 years ago

0 Ankit Gupta95 over 4 years ago

TI__Expert 4555 points

Hello Srinivasu,

Looks like there is some issue with pspice model. Did you try Webench simulations?

Best Regards,

Ankit Gupta

Application Engineer

0 Srinivasu V over 4 years ago in reply to Ankit Gupta95

Intellectual 360 points

Hello Ankit,

I have tried in TI-TINA. tool. same issue only.

I have installed WEBENCH also.I can able to find the component, but I could not able to open any design.

Thank you,

Srinivasu

0 Ankit Gupta95 over 4 years ago in reply to Srinivasu V

TI__Expert 4555 points

Hello Srinivasu,

Please see the Webench design in this link.

Let me know if you have any issues with simulating this design.

Best Regards,

Ankit Gupta

Application Engineer

Power management

Power management forum

LM5575: Vout not getting properly