u/InnovatorElevator

One thing I’ve noticed in power electronics: good MOSFET models for PLECS and LTspice are surprisingly rare.

A few large manufacturers like Infineon do provide models, but many feel either lightly validated, simplified (Level 1), or not representative under real operating conditions. A lot of vendors provide nothing at all.

For engineers here:

1. When was the last time a vendor MOSFET model actually helped you make a design decision?

2.Have you ever avoided simulation because you didn’t trust the device model?

3. What usually breaks your trust in a model? Thermal behavior, switching loss accuracy, parasitics, convergence, lack of validation data?

4.) If a company provided well-validated models with measurement correlation, what evidence would make you trust them enough to use in real projects?

Wondering whether this is just an annoyance everyone tolerates, or a genuinely underserved gap in the workflow.

I started thinking about my startup in 2020. I was 1.5 years into my career. No savings. No family wealth. No safety net. I am the oldest child. My father earns but never saved anything. No property. Nothing to fall back on.

Then in 2021 my father fell seriously ill. Whatever little I had saved got wiped out. He recovered fully and I am really glad about that. But financially it set me back to zero. I kept going. Kept dreaming. Kept reading. Kept thinking about the product. But honestly, for years it was more dreaming than doing. I was working full time, supporting my family, and building on the side when I could. Which was not a lot. In 2023 I got married. That almost finished whatever savings I had rebuilt. The only reason I was able to actually start building seriously in 2025 was because of my wife. She earns too, and she believed in me enough to let me take the risk. I spent a ton of money and energy building while still holding a full time job.

In March this year, I finally jumped full time, leaving a quite high paying job (3.8 lac per month post tax)

Zero customers. Zero revenue. Just a product and a belief.

I have talked to 50+ engineers in my target industry. Some said it is useful but asked for more features before they would use it seriously.

Others did not trust it because, well, it is a new tool and does not fit in their typical workflows. Many prople have spend lot of money taking the courses to learn yhe tool which my ptoduct can replace.

Engineers are not the buyers. Managers are. I have been talking to the wrong people this whole time. I have not had a single real conversation with a decision maker. Just LinkedIn messages that got ignored.

I had really high hopes that an ex-colleague would join me as a cofounder. he had the skills I am missing. I thought we would be a great team. He said no. And that broke something in me today. He always usef to say that if we secure funding he will be able to join with somewhat reduced salary. Since i needed hime desperately i had offered him salary from my own savings and he said no and not because of financial risk but because he will have to do a lot more work and doesnt want to compromise comfort.

I am not going to lie. I am sitting here feeling low. Wondering if I am even meant for this. I am scared of failing and having to face the shame of it. Not just for me, but for my wife who bet on me. For the years I spent dreaming about this instead of saving money or building a safer life. But then I think about it and I have not actually gotten a signal to stop. The engineers did not say the idea is bad. They said it is not ready yet. The managers have not said no because I have not even asked them yet. I do not know what tomorrow looks like. But I know I am not quitting on a bad day. If you have been through something like this I would love to hear how you pushed through. Just how you kept going when everything felt pointless