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I created the boost conveter in LTspice software, but when I try to run the simulation, there was an error message saying:

Fatal Error: In Missing node(s).

Can anyone help me out with the problem?

diagram

SPICE Netlist

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    \$\begingroup\$ possible culprits in what you call the booster circuit simulation: if L1 model is ideal, add parallel resistor; C1, do you really mean .028 farads; what is Schottky diode part name/model; Rload may be too small \$\endgroup\$
    – V.V.T
    Commented Feb 4, 2021 at 6:26
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    \$\begingroup\$ Look at the menu item View/SPICE Netlist and post the entire contents of it. \$\endgroup\$
    – jonk
    Commented Feb 4, 2021 at 7:29
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    \$\begingroup\$ Besides the advices above, your pulse source has a period of 10 seconds; did you mean 10u (microseconds)? Also, it's called a boost converter, not a booster. \$\endgroup\$
    – a concerned citizen
    Commented Feb 4, 2021 at 12:36
  • \$\begingroup\$ Schottky diode part name/model : RBR15BM30A \$\endgroup\$
    – Sachin Dalvi
    Commented Feb 8, 2021 at 9:41
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    \$\begingroup\$ @SachinDalvi Use @ (TAB cycles between the names) to notify people when replying in the comments, otherwise they will never know. Also, this is not very electronics related as much as it is LTspice related. There's a group dedicated for this. \$\endgroup\$
    – a concerned citizen
    Commented Feb 8, 2021 at 10:19

1 Answer 1

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I suppose you wanted to add a node name (F4), but you ended up placing a SPICE directive (S). That's why the netlist shows Rload to be connected between the nodes N003 and ground, instead of what is seen in the picture, OUT. To correct that, delete OUT, and IN (same thing), and then add the proper naming: either with F4, or with the small A right between the ground and the resistor, in the toolbar. Or from the menu, Edit > Label Net.

Not a big deal, but you renamed the MOSFET's designator from M to Q. That's usually reserved to bipolar transistors, though nothing will happen if you rename it, LTspice takes care of it, anyway (see the M§Q1 entry in the netlist). Just so you know.

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