Hello Dennis,
?
Thank you so very much for sharing your
mosfet gate charge file. It is extremely useful for beginners like me. However, certain manufacturers are very clever and do not provide complete details. Some of the examples are:
1) MOSFET : If you go to figure 15 (Test circuit for gate charge behavior) in this datasheet, only IG = Constant is mentioned and nothing about the pulse duration. The current source has also been implemented using a linear regulator, I believe.
2) MOSFET : Here, in figure 13 (Gate Charge Test Circuit & Waveform), again IG = Constant is the only thing that is mentioned. Nothing about pulse width duration.
3) MOSFET : Only the typical gate charge curve is provided in Diagram 10 (page 8). Nothing at all about how to implement the circuit or simulation.
4) MOSFET : Again, figure 2-1 (Gate Charge Measurement Circuit) provides incomplete information. IG = Constant, but how much should be the amplitude of the pulse? How much should be the ON time of the pulse? How much should be the pulse duration?
5) MOSFET : Here the gate charge characteristics have been plotted in figure 7 (Typical Gate Charge vs. Gate-to-Source Voltage), however, there's no mention of the value of current current for which these characteristics were obtained. And if you go further to figure 18 (Gate Charge Test Circuit) amplitude of the pulse is mentioned (3 mA), but again the remaining information is missing.
6) MOSFET : Again, only the typical gate charge curve is available in Diagram 10 (page 9), and nothing about how to implement the circuit.
There may be many more similar or different cases where the information is incomplete in several different manners.
It would be helpful if you can suggest something foolproof that can help in overcoming such scenarios.
With Regards,
Ankit
