1. S

    Engine control IC simulation

    Hi, I want to simulate the product in the link in a spice program, but there is no spice file provided by the manufacturer. How can I simulate the functions of this product in a program like LTspice? - Product : https://www.nxp.com/part/MCZ33810EK#/ - Datasheet ...
  2. Mohammed SETTI

    LTspice inconsistent MOSFET gate driver behavior

    Hello, I am working on a 7-level power micro-inverter which composed mainly by power MOSFETs. These logic-level MOSFETs (IRLZ24NS) are driven by separate photovoltaic gate drivers with integrated fast turn-off (Broadcom ACPL-K30T). The problem comes when I try to simulate the circuit and compare...
  3. A

    2SC4488 NPN Transistor for SPICE

    Hi there! I am currently looking for 2SA1708 and 2SC4488 transistor models to integrate into Spice, but I could not find any model on the web. Could you please help me if you have the related models? Or can you please give me feedback about what parameters are the most important ones to model...
  4. D

    LTspice giving weird results in simulation of Phase Shifted Full Bridge Converter.

    I am trying to simulate a Phase shifted full bridge converter in LTspice. I had already simulated it in matlab simulink and obtained the desired results, but I am redoing it in LTspice to include the effects of non-ideal components. In order to avoid the pulse generation, I imported the...
  5. D

    Need help regarding opening .asc file in LTspice.

    I have obtained a LTspice file from the net, its a .asc file but its in the form of the following text. I cannot for the life of me figure out if there's a way to convert this to schematic and run it as a simulation file. Please help. Version 4 SHEET 1 1180 680 WIRE -352 -288 -416 -288 WIRE...
  6. andradeomar77

    Different output in Orcad Capture and LTSpice

    Hi, i been trying to understand why Orcad Capture is given me differents values in the simulation to given by LTSpice. I did the calculations manually and only the Orcad Capture output is correct. Why? This is a picture of my circuit in Orcad Capture And this is a picture of my LTSpice...
  7. K

    LTSPICE Folder management

    How does LTspice search for symbols and subcircuits? Is it different for automatically generated symbols and Out of the box symbols? I ask because I ran into an error message that states "Could not open library file "C:\users\*****\Documents\***etc". This was when I tried to run a new project...
  8. T

    can't find definition of model 'MBRA340T3G' in LTspice?

    Hello, I have tried to add the schottky diode(spice model from onsem) as you can see on the schematics on LTspice but I keep getting the same errors and I have watched the intro from this link : Adding Third-Party Models to LTspice IV but I still get this error I have saved the same schematics...
  9. K

    LTspice simulation of SAW Filter (*.s2p)

    I am trying to simulate the Infineon GPS SAW Filter B2618. I have converted the S-Parameters *.s2p file by s2spice.exe B2618_WB.s2p Z1 Z2 to *.lib file and imported it into LTspice with autogenerated symbol. When I run the AC simulation I got error: u1:r2p: Resistance must not be zero What I...
  10. flaviotmz5

    LTspice problem

    My simulation with a dc forward converter has a problem when I add any parallel capacitance to the inductor L3 even when I add a real diode after the L3, the problem with the parallel capacitance is that surge an extremely high peak current in the MOSFET, I don't think that's suppose to happen...
  11. kamranM

    Start-up and steady-state models of microcontroller

    I've been looking at UCC28C43 models provided by TI. Why do we need two different Spice models such as "Transient steady-state" & "transient start-up" for MOSFET driver IC? How do we use them? When do we need these analyses? Do all microcontrollers in power electronics have such separate models...
  12. mehmet.kl

    LT8316 Flyback Bode Plot

    Hi everyone I am tryig to obtain the gain and frequency plots of a flyback converter controlled with LT8316. LTspice does not provide any frequency response feature but I use middlebrook's method to obtain frequency response. However, result is too weird :( I simply insert a small ac signal...
  13. G

    LTSpice Error Log Unknown Parameter Using Vishay FET Model

    I am hoping an LTSPICE expert can help me with a model. I downloaded a SPICE model from Vishay's website to test a PFET in a power supply design, specifically Vishay SQJ431EP. The model is attached as "SQJ431EP_HS.TXT". If I run this in my design, LTSPICE takes much longer than normal and...
  14. Yourint

    LTspice simulation on 4th order active bandpass filter using multiple feedback and Sallen-Key topologies didn't go as I expected

    First of all, thanks for reading this, I tried to replicate this research as my project (not aim to publish or anything just for study purpose) Reference: https://www.iasj.net/iasj/download/ceca8bad4ee05e7c Now I tried to guess and do what I can do about this circuit and the result is this...
  15. R

    Unknown Subcircuit after creating a custom model

    I'm trying to model a simple mechanical switch that closes at a set time, remains closed for a set duration, and opens again. I am doing this with a behavioral resistor, but I want it to be clear from the schematic that what I mean is a switch, so I created a new symbol. When I attempt to use...
  16. sbya1875

    LTSpice Simulation error with added 3rd party spice model

    Hi everyone, I was simulating a simple RC circuit to find it's frequency response using the following two third party Murata capacitor models GRM155C71H104JE19 and GRM155C71H103JE19 in the following circuit. I received the following error message: Multiple instances of "C1"...
  17. T

    741 Op-amp LTSpice Simulation

    Hi, I am trying to plot frequency response of 741 op-amp by LTSpice. No matter I tried, I can't get the plot to be shown. I am a newbie as I just started with LTSpice yesterday. I have attached the file below, please help me to inspect what did I do wrong. Thank you so much.
  18. O

    How Can I measure MOSFET ro(output resistance), ID(DC current) at LTSpice?

    Viewed 1 time 0 The subject is to make ro=500k, ID=100u by setting VG3,VG4 and W/L of MOSFET. And I got the exact values from Hand-calculation, and am trying to test it by using LTSpice. I did make this schematic. and DC currents of two mosfet was around 74uA (I don't know it is right way to...
  19. the machinist

    I'm getting different results with the LTspice simulation

    Hi, There was an example from my book and I wanted to build the same circuit on LTspice to test the results. However, when I create to simulate the circuit in the LTSpice environment you see below with the different outcome values. and here my ltspice results: I could not find the same voltage...
  20. S

    LTspice circuit problem

    Hello! I'm using LTspice and I'm not quite sure how I'm supposed to do the dependent source as it isn't dependent on a component. The circuit reference and my attempt (which turned out wrong) are attached below: Thanks in advance :)
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