All Questions
18
questions
0
votes
2
answers
161
views
Purpose of Schottky diode in this schematic
I have come across the power supply management section used in the Verdin Development Board, addressing overvoltage, undervoltage, overcurrent, and reverse voltage protection.
While I understand how ...
- 903
4
votes
1
answer
80
views
What is meant by Switching charge ( under Gate charge characteristics) in the given MOSFET datasheet?
What is switching charge in this MOSFET datasheet?
The switching actually takes place during Miller region. Hence I belive Qgd should be called as switching charge. But looks like the remianing gate ...
- 3,032
1
vote
0
answers
91
views
Coupling heatsink RC network to MOSFET's Cauer circuit
I am trying to understand simple RC thermal simulation to analyse the temperature rise in Rohm a 1200 V N-channel SiC MOSFET SCT3040KR.
RC Cauer parameters are as depicted in the LTspice circuit ...
- 21
0
votes
0
answers
49
views
How to calculate the creepage distance of a package through package outline?
How do I calculate the creepage distance of a package which is not specified by the manufacturer?
By looking at the drawing of the package, could I calculate it? If yes then how?
- 347
2
votes
1
answer
124
views
Multiple Source Terminals of SiC MOSFET
I want to know that most of the semiconductor top side cooled package have more than one power source terminal. I can understand by doing so you can minimze the loop inductance of gate driver loop ...
- 347
1
vote
1
answer
720
views
Influence of gate resistors and capacitors on driving gate of mosfet
Good Day,
I wannted to ask in a typical gate driving circut of a Mosfet, we always have Rgoff, Rgon,RGS and CGS as shown in below screenschot. What is the purpose of these components in driving the ...
- 347
4
votes
0
answers
157
views
How to mitigate excessive ringing in VDS and VGS
I have a few questions regarding my measurement results in the lab for a double pulse test setup. There are three issues which I want to mitigate
.
At turn-on interval, there is excessive ringing in ...
- 347
2
votes
0
answers
169
views
Difference in simulated and measured Eon, Eoff and Erevreq for double pulse test conducted on a MOSFET
I conducted a double pulse test (DPT) on an AUIRFP4568 MOSFET in the lab as well as in LTspice. With the same setup as used in the lab I created a setup in LTspice using the SPICE model of the MOSFET. ...
- 347
1
vote
0
answers
156
views
dv/dt capability comparison of two MOSFETs
I am doing a datasheet comparison of the AUIRFP4568 and the IXTH150N15X4 MOSFETs. The MOSFET is for a three phase inverter working as MCU (Motor Control Unit) to control a PMSM motor, and will be ...
- 347
1
vote
1
answer
261
views
Conduction losses calculation of a SiC MOSFET
I have a question regarding conduction losses calculation of a SiC MOSFET. What I found in different research papers and in application notes is that you calculate the power dissipated during forward ...
- 347
0
votes
0
answers
125
views
Bandwidth: voltage-source vs. current-source gate drivers
Why do voltage-source gate drivers provide low-to-medium bandwidth that does not work well for wide band gap devices, while current-source gate drivers provide hundreds of MHz of bandwidth?
- 151
3
votes
2
answers
336
views
What is the reason why thermal aging affects only the Cds capacitance but not the Cgs or Cgd capacitances?
Please take a look at the following images, experimentally obtained from a power cycling test of a power MOSFET. After the test where thermal aging is created due to repetitive power cycles, it is ...
- 151
1
vote
2
answers
2k
views
Why is an N-type MOSFET used for low-side and a P-type for high-side switching?
Typically an N-MOSFET is used for low-side switching and P-type for high side switching. That's why transmission gates use both an N and a P-type MOSFET.
But I don't understand how a P-type for low-...
- 2,519
4
votes
4
answers
891
views
GaN Vs SiC physic properties
Here is a table which shows the différence between GaN and SiC:
I have no knowledge about physics of components. I have just some bases. In the above table I do not see real difference between SiC ...
- 2,478
10
votes
2
answers
4k
views
What is the difference between CPU transistors and generic ones?
Recently I had to build a h-bridge driver for my project, wireless power transmission. I learnt that I needed to have dead-time in my PWM signal given to IR2110, which doesn't have any dead-time ...
- 364