LM5122 simulation delay

I simulate boost converter in Pspice for TI.

Hi Dorde,

More details are required before we can support you.

Best Regards,

Feng Ji

Hi Feng,

I am simulating a boost converter with an LM5122 control circuit. The current through the inductor should be 60 A, 
and the output voltage 15 V.
Input voltage is 3 to 6.8 V, maximum output current is 26 A. 
Those signals are not a big problem, I get the values ​​I need. 
But for the simulation to start, it takes a very long time of 14ms (it has a big delay). 
I am sending a graph with signals, where the inductor current is shown in green, and the output voltage in red. 
The capacitor on the Soft Start pin in my case has a value of 360 nF and gives a good result for the signal, 
but it has a large delay.

Best regards,
Dorde

Hi Dorde,

May you share the simulation file?

Best Regards,

Feng Ji

Hi Feng,

I share simulation file.

Best regards,

Đorđesimulation.rar

Hi Dorde,
thanks for sharing. Will look into that but may needs some days.
But give you some update every 2-3 days.

Best regards,

 Stefan

Hi Dorde,

this delay is the startup delay which is due to the charging of the cap at SS to the startup voltage of ~ 300mV.
This delay is required to ensure the boot cap is charged.
See also Datasheet Figure 22

Best regards,

 Stefan