LT8364 inverting load transient response

Hi Jaslau,

Thank you for using our product. I notice that you're setting the converter at PUSLE-SKIP+SSFM mode. At SSFM, it's a little more difficult to compensate the control loop. I would recommend you to set it at BURST mode. 

Also, the current ripple ratio at 1AIout is quite high. Please increase the inductance to 4.7uH. Finally, change the Vc compensation network to 470pF C and 400k ohm R. 

When you build the circuit, make sure to check the transient response again and tune the compensation correspondingly. 

Regards, 

Peter Pham

Hi Jaslau,

Thank you for using our product. I notice that you're setting the converter at PUSLE-SKIP+SSFM mode. At SSFM, it's a little more difficult to compensate the control loop. I would recommend you to set it at BURST mode. 

Also, the current ripple ratio at 1AIout is quite high. Please increase the inductance to 4.7uH. Finally, change the Vc compensation network to 470pF C and 400k ohm R. 

When you build the circuit, make sure to check the transient response again and tune the compensation correspondingly. 

Regards, 

Peter Pham

Hi Peter,

thank you for your extensive reply! With this values for the compensation the simulation is working much better now, thank you.

Regarding BURST mode, the converter is synced to a 1.7MHz clock. Maybe that wasnt so clear in the schematic. So I think pulse-skip is the default with syncing.

But I am happy with the transient response now.

Regards,

Jasper