help with IR2110 chips

[Alec_t]

Which parts of the circuit do I need to be concentrating on?

Change the gate-source resistors (R3,R4,R7,R8) to something much higher (e.g. 10k, which works ok in my simplified sim). With the present 1k, each bootstrap capacitor is discharging rapidly and the gate-source voltage is insufficient to keep the high-side MOSFET conducting; hence the spurious oscillations. With these oscillations eliminated the sim runs much faster.
Change the Vdd voltage and the Von setting in the P1 and P2 sources to match your logic supply voltage.
Get the sim running to your satisfaction (including ensuring voltage and wattage of components is well within ratings) before trying a real-world circuit build.
The Label net tool is the 'A' icon in the toolbar. Hover the mouse over any tool to read its description.
To see a list of components, go to View/Bill of materials.

 

[Maglatron]

ohh yeah I get it!
So cool!
can I get a screen shot of changing the labels of the waves in the simulator? struggling to understand.
also, I want a list of the pieces next to the schematic, I bet its easy but everything is when you know how.

so I did what you said with the vdd of 5v and the logic of the pulses set to 3.3 its working well do i need the 12v vcc or can acctually just tried it less than 12v and it doesn't work so I guess that that is essential so for my next question does spice have a component that runs off of the 12v to supply the 5v? I think what i'm after is a voltage regulator maybe?

 

[Alec_t]

Look in the Regulator folder for the 7805.
If your Vdd is 5V, Von in the P1 and P2 settings should be 5V too, not 3.3V.

 

[Alec_t]

do i need the 12v vcc

From the datasheet, Vcc is in the 10-20V range. If in doubt, always check the datasheet.

 

[Maglatron]

ok cool i read a graph but nevermind I will set the logic inputs to 5v. so I saw a guy on youtube that used what looked like a mosfet but he said something like voltage regulator not sure if that was the exact term but I would like to use one so that i can power the 5v vdd with the 12v line

sorry didnt read all that post right regulators 7805 got it

I don't have a regulators folder

can't find the diodes on amazon VS-E7MH0112
or the MOSFET's SP8K33
on amazon

can I use any fast recovery diode rated 1000v

will chanzon uf5408's work
and will the original ones that I was going to use IRF640 work for the MOSFET's

 

[bertus]

Hello,

The LTWiki has some extra libraries for LTSpice:

Components Library and Circuits - LTwiki-Wiki for LTspice

ltwiki.org

The Bordodynov library is quit big with a lot of extras.
It is shown here as the ZZZ folder:


Bertus

 

[Maglatron]

what do you think?

 

[Maglatron]

thats really helpful how do I install the extra parts please ?

ok nevermind i got it

Do I overwrite

 

[Maglatron]

I overwritten it and lost components so I run the update components and reset it back to where it was at but however I still think that the files provided will come in really usefull if I add them properly please let me know how step by step

I do not mean to be ignorant it's probably right in front of me but I dont want to overwrite the files again because that didn't work but I do want the extra libraries and files thanks ever so much!

Hello,

The LTWiki has some extra libraries for LTSpice:

Components Library and Circuits - LTwiki-Wiki for LTspice

ltwiki.org

The Bordodynov library is quit big with a lot of extras.
It is shown here as the ZZZ folder:
View attachment 60373

Bertus

Can you walk me through the proccess of adding the extras please?

 

[bertus]

Hello,

Here is some more info, including where to place them:

For LTspice users. Libraries of models, examples, etc

For LTspice users. Libraries of models, examples, etc

bordodynov.ltwiki.org

Bertus

 

[Maglatron]

Thanks but the internet I'm on won't let me to the download links, could you download them for me and put them in a zip to share them with me I would appretiate it, thanks

 

[Alec_t]

uf5408 and IRF640 should be ok.

 

[Maglatron]

Thank you lots
also there is no folders called ltspiceIV or ltspiceXVII but I am using version 17
http://bordodynov.ltwiki.org/
is this

http://bordodynov.ltwiki.org/standard.mos.XVII.txt

what I need? not clear on the instruction to be honest.

 

[Maglatron]

I think this is the directory what do I do from here?

 

[Alec_t]

Not the Appdata folder. Look in your Documents folder (as the instructions in that post #116 attachment indicate).

 

[Maglatron]

yeah I looked in documents there isn't anything there to do with ltspice, look!

 

[Maglatron]

So whats going on with it do you think??

 

[Harald Kapp]

You can place your own libraries anywhere. Then add that place to the LTSpice search paths via the control panel:

 

[Maglatron]

Thanks so I've created a an LTSpice directory in documents what do I have to do to get all the libraries installed?

Thanks so I've created a an LTSpice directory in documents what do I have to do to get all the libraries installed?

can I use this? http://bordodynov.ltwiki.org/standard.mos.XVII.txt

On the internet I'm using I cannot download the zips

Could you download them and put them in a zip and post it on here maybe?

do you just add the txt file to the chosen path? http://bordodynov.ltwiki.org/standard.mos.XVII.txt

 

[Harald Kapp]

Have you studies this website?