High power and High frequency Mosfet and H Bridge

Hi Ennio,

Thanks for your question! Let me take a look at this device to see what parts we have that will best fit. Are you looking for a half bridge driver with a single input for internal dead time? Do you require isolation? If not ucc2771x is 600v hb driver that should work similar to ir2110 however its only up to 600v bus. For higher bus voltage we might need to look at an isolated driver like ucc2152x.

Thanks,

Hi Ennio,

Thanks for your update. UCC21520 has a significantly smaller Rja than IR2110 which allows the package to dissipate more heat, which is already a good determination factor with equal test conditions. What is your drive voltage? will you be using a gate resistor? I will do some calculations to see if it exceeds max power dissipation of the device.

Thanks,

Hi Ennio,

wow, sounds pretty crazy. your flyback on the transformer looks to be amplified by the turns ratio. You can first try snubbing the over shoot at the source (secondary side and even primary as well). You can then try slowing down the di/dt to avoid such a high dv/dt at the switch node this will help with the existing overshoot by adding some resistance to the drive loop which kinda cancels out any parasitic loop inductance. Finally and most important you can look into a DGN or power pad package so you can significantly reduce the Rja and sink more heat away from your part.

With a working system check to see your output of the driver, and the supply voltage so we can see if things look normal and with spec. We can also see the switch node to observe the fet fully turn in on. I think thats what we want to do, make sure the fet is being turned on completely as to not make to much fet conduction losses, excessive conduction losses could be raising the juction temp of the driver which is what needs to be kept below 150C. If you are worried about power dissipation and want to double check your system check out section 2.7 www.ti.com/.../slua618.pdf

whats your end equipment? what will this circuit be doing in your syste?
Why do you think IR2110 will advantages to your system?
please let me know if you have any more questions.
Thanks,

Hi Ennio,

Frequencies past 1Mhz and 600V and above which requires isolation requires a driver that might be outside our realm. You should be able to use our drivers with no issue up to this frequency.

Thanks

Hi Ennio,

Check out our dual channel isolated gate drivers. The UCC2x52x devices are most similar to Eice.
www.ti.com/.../products.html

Hope this help with your search, let me know if you have any more questions.
Thanks,