EPC2152_sim not working

Designing with GaN FETs and ICs Modeling and Simulation
1

Hi, modify your model to differential mode with two 2152 and LTspice not work… Why?

2

Hi, I would like to help but need a little more information about this problem, please.
Which simulator are you using (e.g., LT Spice)?
Can you share your testbench or a screenshot of it?
When the simulation does not work, what error message do you receive?
Thank you.

3

i attached my LTSpice prj.

I can’t see output signals from 2152
https://share.internxt.com/d/sh/file/e3391aa731c621f05da3/e02a499442d5c55531e1865d6803150c84ec18e45de518f7f7305c4a8b61c48b

project with two parts of 2152 not working, only one - working.

4

Quick update. I reproduced the problem. Simulation is returning undefined SW voltages.

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5

I do not have any experience with using two buck converters in differential mode. Should there be a ground reference somewhere connected to the SW nodes?

Simple example:

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image1784×983 177 KB

In this case, the simulation converges.