Hi everyone,

I'm working on an LTSpice simulation that includes the LT8672 (Active Rectifier Controller) and MAX20048 (Buck-Boost Regulator). The simulation is much slower than expected, when simulating for ISO7637 & IS016750 test standards .

Any insights would be greatly appreciated! Thanks in advance.

 

I'm sorry, but you're being naive. My advice: calculate the first part of the circuit separately (without the second converter, by simulating its consumption, at least with a resistor). Converters are not counted for 2 seconds. Two seconds will count as a whole year!

 

I’ve been working on a simulation involving the LT8672, and when I simulated using only the LT8672, the simulation ran as expected without any significant issues. However, when I try to simulate using both the LT8672 and MAX20048 together for the required test standards, the simulation speed drops considerably, and I end up with simulation times that exceed 10 seconds, which is the minimum time duration needed for proper analysis.

To clarify, I need to run the simulation with both of these components to adhere to the testing criteria, but the simulation time is currently too long to be efficient.

 

I end up with simulation times that exceed 10 seconds

That, or even 10 mins, is not an unusually long time for a sim of a complex circuit. I'd be more concerned if it took >10 hours.

 

the simulation time is currently too long to be efficient.

How long is "long"?

 

For the required test standards, I need to run the simulation for at least 10 seconds to complete the analysis, but this seems to be a long simulation time, especially for the MAX20048.