TPS54202: Slope compensation voltage

Kenji,

Sorry, I can't disclose the internal parameters here. What's the purpose to know the slope compensation value and current detection value? If for customer's modeling, only having those two data is not enough. I suggest to download the Psipce model or use WEBENCH model to run the simulation. 

Hi Ryan,

Thank you for your support.

Customers request for designing loop gain characteristics.

I found that it was posted on E2E that Webench cannot simulate Bode plot.

Since the output is 15V, the reference circuit example does not apply.

Also, they do not want to enter PFM mode as much as possible, so they must be designed with control in mind.

Best Regards,

Kenji

Hi Ryan,

I was late to contact you.

We have confirmed the desired behavior of the customer. Can you get some advice from you?

・ PFM operation when less than 200mA.

・ At 5MHz, want to suppress back ripple within 40mA (@ IL = 200mA)

Best Regards,

Kenji

Hi Kenji,

You can try with a lower inductance to see if the skip point could be low down to 200mA. But using a lower inductance means large ripple at the output side, it will be not good for your second target.

Anyway, i would suggest you to use a FPWM part here like the TPS54308.