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TPSF12C3-Q1: PSpice simulation model

Dorian
Prodigy 10 points

Part Number: TPSF12C3-Q1

Tool/software:

Dear TI experts,

 

I am using PSpice for TI and the simulation models provided about the TPSF12C3-Q1. I have some questions about the transient model then one on the AC model.

Transient model :

1 – Do we have to add our load connected the “Line_OUT’” terminals ?

At the end of my power lines, there is a rectifier then an inverter. I can add the rectifier to the diagram, and I have the current waveform from the inverter.

2 – In the initial model, the supplies are 3 pulse generators with high dv/dt impulses. Do they stand for differential mode source ? In my study case, I have 3 sinus generators, could I add them or it doesn’t matter because we only regard the noise ?

3 – Does Vsw stands for common mode source ?

4 – Why are Cx1, Cx2 and Cx3 connected to N_artificial ?

5 – I would like to compare the CM noise with and without the active filter. Is it enough to put EN at ground level to avoid every IC’s effects ?

6 – In order to measure CM and DM noise, do we have to add a LISN model on each line ?

AC model :

7 – Could you confirm that if we regard gain and phase on inductance L24 terminals, as it is written on the diagram, we should find the same gain and phase as the excel spreadsheet calculator ?

 

I apologize if some of my questions could be obvious, but I am not an expert in this field.

Regards,

  • 0
    TI__Mastermind 19820 points

    Hi Dorian,

    1. yes you can add the load.
    2. 3 pulse generators are for 3 different phases in 3-phase device, there will be only one generator in the 1-phase design
    3. Vsw is the CM noise source
    4. I think that is the neutral line where you can inject signals
    5. Yes set EN to gnd to turn off AEF
    6. Yes. 
    7. Theoretically yes

    thanks,

  • 0 in reply to Naresh Adepu
    Prodigy 10 points

    Hi Naresh,

    Thanks for your answers, it will help me a lot.

    I forgot to mention it, but I am using a 3-phase system without neutral.

     

    1. I understand that, in my 3-phase sinus system, I have to substitute each pulse generator (in the base model) for a sinus generator.
    2. In the base model, there is a “N_artificial” in the diagram, one is coming from the generator, but the other is connected, as I said, to these 3 X-capacitors (Cx1, Cx2 and Cx3) as ground. I don’t understand because this neutral won’t be in practice. If we compare with Cx7, Cx8 and Cx9, other X-capacitors, they are connected together but without “N_artificial”. See the next 2 pictures.

    Thanks,

  • 0 in reply to Dorian
    TI__Mastermind 19820 points

    Hi Dorian,

    The picture on the right is correct. All the X capacitors are connected together but without neutral. Refer the following picture for your understanding.

    Thanks,