Error when using spice model for MOSFET for Basic Buck w/ PI control

Question

Christine Page 2021-7-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/887269-error-when-using-spice-model-for-mosfet-for-basic-buck-w-pi-control

回答： Yoshi Minagawa 2021-7-28

buck.zip

Hi all. I'm trying to simulink a buck converter w/ PI control with a MOSFET SPICE model with a generated block created from a spice netlist. I keep getting thrown a error that I don't really understand. Below is the picture of my model and the error.

This is just a basic buck converter with PI control, so the only thing I was thinking was the problem was the MOSFET, but it keeps highlighting the simulink-ps converter as the issue which I don't really understand.

I have attached my files as well for feedback. If someone could explain what is going on, that would be super helpful. Thank you.

For reference: Node 3 is the source, Node 2 is the gate, and Node 1 is the Drain.

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Answer 1

Yoshi Minagawa 2021-7-28

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/887269-error-when-using-spice-model-for-mosfet-for-basic-buck-w-pi-control#answer_755474

Hi Christine,

When this error occurs, it maybe is valid to enable the filter of Simulink-PS Converter block. By enabling the filter, you can provide the derivatives needed for Simscape calculations. For details, please refer to the similar answer.

https://jp.mathworks.com/matlabcentral/answers/469520-not-enough-input-derivatives-were-provided-for-one-or-more-simulink-ps-converter-blocks-for-the-solv

I hope this will help.