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UCC20520: UCC20520

Zsolt Danyi
Prodigy 160 points
Part Number: UCC20520
Other Parts Discussed in Thread: UCC21520, ISO5852S, UCC21530, ISO5452

Hello

I would like to try out some of the new TI tech. in my new developement and to do so I need some information regarding SiC and Gan Fet technology.

I have a device, which makes high voltage 1000V pulses in both direction positive and negative, with maximum 100kHz. I only need a cuple of mA current, maximum 5-10mA is more than enough. I use this chip as mentioned above and use it as in the datasheet section 9.2 Figure 34. driving a typical half bridge. What I am looking for is fast and clean switching without jitter to improve efficiency and resolution in my device. Can you please suggest for me a SiC and/or GaN Fet with the corresponding isolated driver which can provide the above mentioned requirements? At the moment I use this chip paired with a power Mosfet IXTP02N120P, but simultaneously trying the new FET technologies. 

  • 0
    TI__Mastermind 23105 points

    Hello,

    Thank you for the interest in the UCC21520. This application sounds a bit unique in the high voltage but low current category. I am referring to an expert in the SiC devices since I think the 1kV requirement will result in SiC maybe being a good candidate.

    The UCC21520 would be a good driver choice, but there may be a well suited driver that the SiC specialist can recommend.

    Regards,

  • 0 in reply to Richard Herring
    TI__Expert 4875 points

    Hi Zsolt,

    Thanks for your post! You could check out some of the SiC power MOSFETs at the following website where they offer some low-current, high-voltage SiC MOSFETs. For example, the device C2M1000170D is rated 1700V, 5A. The gate charge is low, so you do not need too much drive strength. With regards to the driver, TI's ISO5852S or ISO5452 would be a good option as it has split output, which is good for driving SiC MOSFETs and integrated short-circuit protection. As my colleague mentioned, UCC21520 or UCC21530 are also good options if you want a dual-channel driver for a half-bridge, but these do not have the integrated protection features which the ISO5x5x family has.

    Let us know if you have further questions!

    Regards,

    Audrey