On Thu, Feb 27, 2025 at 04:20 AM, Robert wrote:
Regarding my own fight with this problem, I can model the LT1375HV on its own, and I can model the PTC fuse on its own, but when the two are combined I get convergence problems
FYI, that is not unusual.? Combining models into the same simulation is often what causes misbehavior to rear its ugly head.? It's just how things often go.
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Another thing you might consider, is changing your own models to avoid voltage sources, such as your PWL voltage source.? SPICE is happier with current sources, even to the point where a Norton equivalent circuit is less likely to lead to problems than its Thevenin equivalent, even though we know they are "identical".? They aren't - well, in SPICE they aren't.? (This is not just an LTspice thing.)
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Andy
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