Default Gate resistor used in PLECS XML Data

sivanshu

Hi Team ,

We are using PLECS Compatible xml data of C2M0025120D downloaded from your site. Would like to understand , this default PLCES data considers any external gate drive resistance ? If we have external gate Resistor in our circuit which is different than this default PLCES data , is there any way to modify this XML file to meet the external gate drive switching times ?

Thanks,

Forum_Moderator

Thank you for your post, it has been approved and we will respond as soon as possible.

TBhatia

Hello Sivanshu,

The xml file takes care of scaling switching losses and therefore times with different external gate resistances. In the xml file you can see 2 formulas:

For Turn-on, the switching energy is dependent on the Rgon specified

Similarly for Turn-off, the switching energy is dependent on the Rgoff specified which gives you the flexibility choose different turn-off and turn-on gate resistances.

Please let me know if this answers your question. Thank you!

sivanshu

Thanks Bhatia . So if we have not specified any external gate resistor , Then the loss computation considers any default Gate resistor or Zero Ohms ?

Best Regards,

ZMiller

Hi Sivanshu,

Currently, you'll need to specify an external resistor otherwise the simulator may assume zero for the external gate resistance. We're working on a model update that has default gate resistances built into the model structure and those will become available soon.

Thanks,

Zack

TBhatia

Hi, I hope that this answered your question. I will close this discussion for now but if you have a follow up question, please "Start a New Discussion" and we would be glad to support you further.