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UCC27524A-Q1: condition of output pulsed source/sink current (0.5 µs)

Shinichi Inoue
Guru 20171 points
Part Number: UCC27524A-Q1

Dear Specialists,

My customer is considering UCC27524A-Q1 and has a question.

Could you please advise?

UCC27524A-Q1 is defined output pulsed source/sink current (0.5 µs) at Absolute Maximum Ratings as 5A.

At this time, how is allowable repetition frequency(Hz)?

I appreciate your great help.

Best regards,

Shinichi

  • 0
    TI__Mastermind 31060 points
    Hello Shinichi-san,

    I have notified the appropriate team of your question and you can look for a response soon.

    Regards,
    Ulrich
  • 0 in reply to Ulrich Goerke
    Guru 20171 points
    Dear Ulrich

    Thank you for your reply.

    I am looking forward to hearing from you.

    I appreciate your great cooperation and patient.

    Best regards,
    Shinichi
  • 0
    TI__Intellectual 2910 points

    Shinichi,

    Thank you for your interest in the UCC27524A-Q1 driver. Although there is no specific maximum frequency, from Figure 15 on the device datasheet you can see data up to 1MHz. Please let me know if there is a specific frequency that the customer is targeting.

    In general, since this is a low-side driver, there is not the same concern with a refresh rate for the driver supply as there would be with a bootstrap supply on a half-bridge driver. I do suggest good power supply bypassing per sections 10 (Power Supply Recommendations) and 11 (Layout) in the datasheet.

    - Daniel

  • 0 in reply to Daniel Ruiz
    Guru 20171 points
    Dear Daniel

    Thank you for your reply.

    I talked about the customer with your answer.

    The datasheet(P.6), ISNK/SRC Sink/source peak current(1) is ±5 A at the condition of CLOAD = 0.22 μF and FSW = 1 kHz.
    This is the answer the customer wanted.

    I appreciate your great help and cooperation.

    Best regards,
    Shinichi