UCC28730: UCC28730

Devashish Deshpande

Part Number: UCC28730

Tool/software:

Hello all,

I am trying to simulate the mentioned Flyback controller in PSpice. But due to some unknown reasons, I am not getting the desired output.

I found the above circuit on TI's website and is the one I am using as a reference.

This circuit is the one I have designed in PSpice. When I simulate it, I am getting 19 nanovolts at the output. All pins except the HV pin are at ~0 volts. I checked the Gate-Source Voltage of the MOSFET as well, it is at ~0v too!

Can anybody please help?

Thank you!!

over 2 years ago

0 Harish Ramakrishnan5 over 2 years ago

TI__Mastermind 24375 points

Hi Devashish,

Thank you for reaching out.

Please find the attached working PSPICE file with UCC28730. You will need to modify this for your operating conditions.

Regards,

Harish1106.UCC28730_PSPICE_TRANS.zip

0 Devashish Deshpande over 2 years ago in reply to Harish Ramakrishnan5

Prodigy 40 points

Hi Harish,

First of all, thanks for the reply and the files.

I am currently using PSpice for TI for the simulation activity.

I used the files provided by you, but unfortunately I am facing a problem when I try to run the simulation. I get the error "1 out of 1 traces are non existent"

What can I do to eliminate this error and get the proper output?

Thank you!!

0 Harish Ramakrishnan5 over 2 years ago in reply to Devashish Deshpande

TI__Mastermind 24375 points

Hi Devashish,

Please read through the error and this is a common warning which requires adding/ deleting certain markers on the design. That should resolve this. Please search for this in PSPICE common warnings.

Regards,

Harish

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UCC28730: UCC28730