MOSFET (Si/SiC) Forum Discussions

For Designing 7 KW isolated bi-directional DC-DC converter.

Why Phase shift Full Bridge (PSFB) is not well suited for bi-directional ?

Please suggest which topology will give better efficiency (~98.5) Like DAB or FB-LLC?

Dear IFX,

May I know why Coss of SiC MOSFET just provide value at room temperature in datasheet? As I know the doping concentration effect the thick of depletion region of MOSFET. there is no effect by low/high temperature? why?

I have the following circuit to drive a 3 phase BLDC motor, I'm using IRFB7730 MOSFETs, and an ED2184 to drive them, but somehow the High-Side MOSFET tends to fail and short itself. What I'm doing right now is trying out each phase step by step in a slow way, keeping the MOSFET high with no PWM, just trying from phase A-C, B-C, etc... Can this be the cause of my problem? Or can there be any other explanation for this? The motor is rated for 300W, so I think it isn't demanding that much current, or atleast enough to make the MOSFETs fail. 

I wanted to add that I'm not doing the phase change sequentially, I'm just uploading the code to energize A-B, B-C and so forth but a single time per phase, so the phase A-B is turned on while I upload the code for the next phase.

Hi all,

We are using IMZA120R007M1H Sic Power MOSFET in our Design.

1. we are switching Two MOSFETs Simultaneously, those two MOSFETs fixed to a common Base plate, in this condition how the temperature will rise between the MOSFETs.

• Like above shown in image MOSFETs are placed in base plate (75mmX90mmX15mm).

1. By placing two MOSFETs in one base plate, weather the temperature of two MOSFETs will add increase the temperature or it will separate the temperature.
2. In IMZA120R007M1H Data sheet Rth(j-a)=62K/W and Rth(j-c)=0.20K/W.
3. How to convert this K/W to °C/W, please suggest any formula is available.

Hi,

May I know the life cycle status of below parts. Are these parts in production or NRND or Obsolete?

1. SMBTA13 (TRANSISTOR NPN 30V 0.3A SOT23)

2.  BSP613PH6327XTSA1 (MOSFET P -60V 180mohm -2.6A SOT223 4)

3.  CY7C65642-48AXC (Periph. USB Hub Controller 70?C TQFP 48)

Hey, due to limited availability, I'm trying to select a replacement for the IPA60R125CP N-channel MOSFETs which I'm using to repair a 110v domestic lighting/dimming circuit.  These are packaged as TO-220 FullPaks.

The closest match I could find was the IPA60R120P7 - comparing the specs it seems like it could be used as a drop-in replacement.  Does anyone have any advice on choosing this as a direct replacement for the older part?  Are there gate drive or other considerations that I'm overlooking?  Thanks.

I've been looking for a suitable transistor to transmit a 110MHz signal through a laser diode. However, despite searching for days, I haven't been able to find any transistors with switching times in the picosecond range. If anyone knows of such a component, I would greatly appreciate the information. It doesn't necessarily have to be a transistor; if there's anything capable of discriminating and outputting a 110MHz signal, please let me know. Thank you.