UCC28950: control to inductor current transfer function in peak current mode controlled PSFB converter

Hello,

I am reviewing your inquiry and will get back to you shortly.

Regards,

Hello,

The transfer function in SLUA560c was verified in a 600 W evaluation module.  It should work for your design. 

The following link will bring you to the 600 W user's guide which has test data for you to evaluate.  You should find this helpful in your design process. 

https://www.ti.com/lit/ug/sluu421a/sluu421a.pdf

Regards,

Mike

Hi Mike,

I don't think you understood my question.  The transfer function that was verified was the control to output voltage transfer function.

I am looking for control to inductor current transfer function.

Regards,

Nitish

Hello,

I am reviewing your inquiry and will get back to you shortly.

Regards,

Hello,

The transfer function is for peak current mode control.  I searched the TI website and there is not a derived transfer for controlling the output current.

Are you are trying to do is a constant current/constant voltage mode control design? 

Regards,

Hi Mike,

That is what I am saying.  I did not find a transfer function for controlling output current.

I am NOT trying to do voltage mode control.  I am using peak current mode control.

Regards,

Nitish

To re-state, the transfer functions presented in above mentioned TI app notes are meant for regulating the output voltage under peak current mode control.

I am interested in "control to output inductor current" transfer function to help design the control loop to regulate the output current under peak current mode controlled operation of the converter.

Regards,

Nitish

Hello,

I am reviewing your inquiry and will get back to you shortly.

Regards,

Hello,

I am reviewing your inquiry and will get back to you shortly.

Regards,