timestamp to small - DC/DC converter

[Huby]

I have send you the whole schematics in ms12 file.

This schematics should be simulation for this: http://oi48.tinypic.com/v98k0.jpg

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What should this be: - one simple dc/dc converter with max 400W output

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What i want to do: -test with oscillator to see if the IGBT is giving some signal. If not then NE555 should be the problem. - put some 400W load on transformer and test it again.

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What i'm not sure of: - how to define output nodes ( yes i know it's funny :-)) and to connect them to transformer - if the 4060BD is good for simulating 4060N - if the LMC555CN is ok for simulating NE555

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Transformer values are ok because this basic idea of dc/dc inverter should be used for much greater powers. Can someone please be so kind and take a look / check this schematics before i start with simulation.

If i click simulate at this point i get error: Would you like to run convergence assistent to attempt to automaticly solve the problem I click yes and then i get - doAnalasys --> timestemp to small --> tran simulation canceled.

Huby

[Sharanya_R]

Hello Huby,

You can change the time step in Simulate»Interactive Simulation Settings.

Hope this helps!

[Miguel_V]

Hello,

For your simulation, try changing the interactive simulation settings under the Simulate tab. Go to analysis options>>use custom settings and in Customize..., change the RSHUNT value to 1e+006 ohms, The RELTOL to 0.01, and the ABSTOL to 1e-006 amps. This should aid in the simulation of your circuit.

A note:

Ttry not to have unconnected instruments, components, etc. They are all taken into account in the simulation setting and can 'sometimes' cause issues with SPICE. If it's not needed, simply remove it form your dsign, it might not make a difference right now and it might not affect anything, but it is a chance you would probably like to minimize.

Kind Regards,

[Huby]

Thank you ! It worked. Can you explain me what did i get with this settings so i can know how to use them in future.

I guess that the simulations tolerance is lower then before ?

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Hmmm, i should get output on my IGBT's but there's nothing.

Ideas ?

Huby

[Huby]

The fuse blowes up after few seconds...