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Driving 32 SiC MOSFET gate drivers with one function generator trigger signal

I have been having a hard time finding out how to drive 32 gate drivers for SiC MOSFETs from a single function generator signal of 5 V. My function generator is a Keysight 33500B. I'm using Genesic ...
Jay Eifler's user avatar
0 votes
3 answers
135 views

How do I choose a suitable MOSFET driver?

Can I drive C3M0045065K SiC MOSFET if I use Infineon-1EDI20N12AF? I read in the specifications that the MOSFET turn-off voltage needs to be -4 V, but I only have a square wave signal of plus or minus ...
hardstudy's user avatar
1 vote
0 answers
53 views

Optimization of gate resistance value for gate driver circut of a SiC MOSFET

I am struggling to tune in the RG_on and RG_off values of gate resistors for SiC MOSFET. I have tried a lot to tune in the values but at turn off transition there is persistence high frequency ringing ...
Alison's user avatar
  • 347
2 votes
1 answer
102 views

Changing gate turn off voltage of SiC MOSFET from 0V to -4V

The design of sic gate driver circuit is designed to work at 0 V as gate turn off voltage. Due to some undamped ringing at turn off, I want to change the gate turn off voltage at -2 or -4V which is ...
Alison's user avatar
  • 347
2 votes
2 answers
267 views

Does a higher switching frequency in SiC MOSFET mean higher efficiency?

https://www.we-online.com/en/news-center/blog?d=design-drivers-sic-mosfets From this link, it says "The SiC MOSFET's extremely fast switching speed helps to achieve higher efficiency". Is ...
Fredrick's user avatar
  • 119
1 vote
2 answers
204 views

MOSFET gate driver current requirement for 2000 volt MOSFET

I am experimenting with a flyback converter that uses an Infineon IMYH200R100M1H MOSFET. How much drive current is needed to drive this MOSFET gate? I am predicting 8 amperes of drive current is ...
Vikram's user avatar
  • 21
0 votes
0 answers
49 views

Could an IGBT gate driver be used to drive a SiC MOSFET?

Can we use a single channel HV IGBT gate driver with galvanic isolation which is previously mounted to derive a 1200V IGBT for 800V inverter application? Can the same gate driver drive a 1200V SiC ...
Alison's user avatar
  • 347
3 votes
2 answers
408 views

Why does SiC have lower Rds(on) than GaN?

It seems that GaN has higher Rds(on) than SiC. The lowest Rds(on) that I found for a 650 V GaN is 25 mΩ @ 25°C. SiC has even lower resistance @ 1200 V like 16 mΩ @ 25°C. Does anyone know the physical ...
Jess's user avatar
  • 2,432
2 votes
1 answer
115 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 ...
Alison's user avatar
  • 347
0 votes
1 answer
115 views

Bridgeless totem-pole PFC controllers [closed]

I'm considering bridgeless totem-pole PFC for a design and am looking for the quickest integrated solution. Unfortunately, it seems like a lot of implementations currently use MCUs and DSPs for ...
NoobPointerException's user avatar
1 vote
1 answer
255 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 ...
Alison's user avatar
  • 347
0 votes
1 answer
74 views

Impact of reverse conduction on control strategy of PMSM motor

On a three-phase inverter working as a Master Control Unit (MCU) to control a permanent magnet synchronous motor, if we replace the IGBTs with SiC MOSFETs, what could be the possible impact of this ...
Alison's user avatar
  • 347
0 votes
0 answers
157 views

IGBT and SiC MOSFET conduction losses

What is the actual reason behind IGBTs having lesser conduction losses than SiC MOSFETs? For the same application, I can see that an IGBT having the same power rating exhibits 10 times more switching ...
Alison's user avatar
  • 347
4 votes
1 answer
370 views

Turning off a MOSFET

What is the advantage of turning off a MOSFET on negative gate to source biased voltage of 5V instead of 0V? I saw that it is a very common phenomenon in SiC MOSFET as their datasheet always specifies ...
Alison's user avatar
  • 347
0 votes
0 answers
148 views

Reverse Conduction/Third Quadrant operation of SiC MOSFET

Good Day, I have to calculate the Conduction losses of SiC MOSFET and how I am calculating total losses is by segregating the losses into three categoriesincludes, Forward Conduction loss of MOSFET, ...
Alison's user avatar
  • 347
11 votes
3 answers
1k views

Can SiC diodes run at higher temperature than common silicon diodes?

For a usual silicon semiconductor, the junction temperature is rated at 150 degree C. That said, for lifespan reasons, the usual limit for junction temperature is around 100 degree C. My question is ...
FlakR's user avatar
  • 749
1 vote
1 answer
298 views

Estimation of Rth(ja) when not provided

I am looking at the datasheet of a SiC MOSFET, which has a junction to case thermal resistance Rth(j-c) max of 1.41°C / W. The junction to ambient thermal resistance is not provided, as this type of ...
Ultra67's user avatar
  • 485
1 vote
2 answers
225 views

Is it a good practice to take power for gate driver from MOSFET source?

I would like to avoid using DC-DC converters for each power MOSFET in a switch-mode power supply as they are pricey, bulky, and have an input to output capacitance which can lead to common-mode noise ...
Roman Matveev's user avatar