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UCC21541: I want to find an alternative with the same pinout

Sébastien Brunelle-Jestin
Prodigy 20 points
Part Number: UCC21541
Other Parts Discussed in Thread: UCC21222, UCC20520, UCC21520, UCC21540, UCC21540A

Hello,

So basically, I'm trying to find an alternative to UCC21541 with the same pinout. I've noticed the UCC21222 seems pretty identical besides it is 3.0kVrms. I also identified UCC21220D, UCC21520 and UCC20520. I've attached the UCC21541 application so it will help you better understand. Can you please help me figure it out?

  • 0
    TI__Intellectual 835 points

    Hi Sébastien,

    Thank you for reaching out on E2E!

    To start, I would recommend referencing this FAQ that compares all of our dual-channel isolated gate drivers. The other devices that have the same pinout in the same package (DW/SOIC-16) are UCC21540 (higher drive strength) and UCC21520(A) (other supply voltage, UVLO options). There are other similar devices that may work depending on what specifications are flexible for your design. Please review this table and let me know if you have any additional questions. 

    Why are you seeking an alternative device? Are you looking for different specifications than the UCC21541 has? With some more detail about what you are looking for, we can help to recommend the most applicable device.

    Thank you!

    Best,

    Olivia Brandel

  • 0 in reply to Olivia Brandel
    Prodigy 20 points

    Hello Olivia, I'm looking for alternatives because all of the options I find are BO. Even the proposed options are BO. The main problem here is that I can't modify the footprint of our boards and we designed it to fit UCC21541. Do you have any other parts or any other ideas I can solve this issue?

    Thank you for your time!

  • 0 in reply to Sébastien Brunelle-Jestin
    TI__Intellectual 835 points

    Hi Sébastien,

    I see. Thank you for the explanation. Unfortunately, it appears that none of the P2P devices in the DW / SOIC-16 package are currently in stock on TI.com.

    I would recommend using the “Notify me when available” feature on the device product pages (in the “ordering & quality” section) to be alerted when they are restocked.

    Best,

    Olivia Brandel

  • 0 in reply to Olivia Brandel
    Prodigy 20 points

    Hey Olivia, 

    I just found out that you have stock for this part UCC21540AQDWKRQ1. It seems to be a good fit with what I've been looking for but I just wanted to make sure with you. I know you proposed to me that UCC21540 would be a good alternative but I can't figure out what does "AQDWKRQ1" mean. Can you please help me with that issue? When I look at the pinout, the diagram and the physical dimension, everything seems to fit. 

    Thank you so much for your help!

  • 0 in reply to Sébastien Brunelle-Jestin
    TI__Intellectual 835 points

    Hi Sébastien,

    Yes, this could potentially work. In the orderable part number UCC21540AQDWKRQ1:

    • “A” denotes a version. This part is UCC21540A and has 5-V UVLO (different from UCC21540 which has 8-V UVLO). See the datasheet table included below.
    • “Q” and the later “Q1” denote that this part is AEC-Q100 qualified for automotive use. Additional testing is done on automotive-grade devices but they are functionally identical to the industrial versions.
    • “DWK” refers to the package type. DWK is SOIC-14. This is slightly different than the SOIC-16 package of UCC21541 (DW) because it has two less pins. The DWK can still be used on the DW footprint since the removed pins are “NC”. Do note that, in this case, the channel-to-channel creepage would still be defined by the distance between the pads on the PCB rather than the distance between the pins of the device.
    • “R” refers to the package quantity. R denotes a large tape-and-reel carrier with quantity of 2,000.

    Please let me know if there’s anything else I can clarify!

      

    Best,

    Olivia Brandel

  • 0 in reply to Olivia Brandel
    Prodigy 20 points

    Thank you for that quick answer. Unfortunately, even though TI says the stock is up, it isn't. When I try to checkout, it displays this message. I guess I'll keep looking.

  • 0 in reply to Sébastien Brunelle-Jestin
    TI__Intellectual 835 points

    Hi Sébastien,

    Sorry to hear that. Supply is very dynamic these days but please continue to look and utilize the “Notify me when available” feature. 

    Please let us know if we can answer any further questions about devices down the line. 

    Thank you!

    Best,

    Olivia Brandel