forward threshold voltage and on-state slope resistance (diode) on data sheet

Kilian

I have a general question about two values on the datasheet, for example the module CAB011M12FM3:

Where can you find the forward threshold voltage (Diode) (at Tvj= 25°C, 150°C) and the on-state slope resistance, forward slope resistance (Diode) (at Tvj = 25°C, 150°C) on the data sheet? What would the values be for the module CAB011M12FM3?

Thank you,

Kilian

TBhatia

Hello, thank you for your message. A member of our technical team is looking into your questions and we will respond shortly. 

AustinC

Hi Kilian,

If I understand your question correctly, this information is available in the CAB011M12FM3 datasheet: https://assets.wolfspeed.com/uploads/2021/05/CAB011M12FM3.pdf

Body Diode Forward Voltage (VSD) is shown in Figure 7.

Voltage Threshold (VTH) is shown in Figure 10.

On-state Current vs. Voltage is shown in Figure 1.

On-state Resistance (RDS-ON) is shown in Figure 2 & Figure 3.

Best Regards,

Austin C.

Kilian

Hi Austin,

thank you for your quick response!

So the forward threshold voltage of the diode is not a value in the datasheet, you have to use figure 7 to determine it, right? Where can one find the resistance values of the diode?

Also, are SpeedFit analyses based on formulas or experimental data?

Thank you so much for your help, I appreciate it!

Kilian

AustinC

Hi Kilian,

Yes, to determine the voltage & current relationship info on the body diode, you will need to use Figure 7. The diode doesn't have a linear relationship between current and voltage like a resistor, so we do not provide a resistance value.

The SpeedFit analysis is based on measured data from the module's datasheet characterization.

Best Regards,

Austin

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.