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UCC27517A: Abnout C1 of UCC27517A

Part Number: UCC27517A
Other Parts Discussed in Thread: TIDA-00707

Hi

I would you like to ask about C1 of UCC27517A.
There are not the types and the capacitance values in datasheet.
Are there recommending the types and the capacitance values?
Best regards,
Yokota
  • Yokota-san,

    I would recommend a low ESR ceramic SMT capacitor in the 1uF - 2.2uF range, placed as close as possible to the device VDD and GND pins. Alternatively, place one 0.1uF close to the device and a 1uF - 2.2uF further away if it becomes hard to fit the larger cap right at the UCC27571A pins. Package sizes 0402 or 0603 are commonly utilized.

    In the TIDA-00707 reference design, we used a single 1uF (part num C1608X7R1E105K080AB). Equivalent alternates are acceptable.

    If this recommendation answers your question, please press the "Verify Answer" button below.

    Regards,

    - Daniel