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  • Resolved

LMR14030 EMI performance data

Hi,

May I check if TI has EMI performance data for LMR14030? (i.e is LMR14030-Q1 meets CISPR 25 standard?)

I can only locate some EMI related information for LM4360x and LM4600x (applicatio note) but couldn’t find any info on LMR14030-Q1

Below is the LT8614 (LTC DCDC) EMI performance below for your reference.

In LT8614 D/S, there are Radiated EMI Performance data for the following condition.

14VIN TO 5VOUT AT 4A, fSW = 2MHz

So, It'll be very helpful if you can provide us the EMI performance data under similar conditions,

(Like Same VIN, VOUT, fSW and max Iout)

Thanks

  • Hi,

    We have LMR14050-Q1Spread Spctrum version at 12Vin5Vout@3A, fsw=2.1MHz.

    RE performance Low frequency.

    RE Performance High frequency

    CE Performance positive input.

    CE Performance negative input

    Thanks.

  • Guru 14475 points

    In reply to Vincent Zhang1:

    Hi Vincent-san,

    Was this measured on the EVM?

    Best Regards,
    Kuramochi

  • In reply to TQ:

    Hi Kuramochi,

    No it's measured on another board which we add EMI filter on it. The main circuit layout is similar with EVM.

    Regards,
    Vincent
  • Guru 14475 points

    In reply to Vincent Zhang1:

    Vincent-san,

    Thank you for your information.
    Is the schematic almost same with EVM?

    Best Regards,
    Kuramochi
  • In reply to TQ:

    Hi Kuramochi,

    Yes, almost the same except the EMI filter.

    Regards,

    Vincent

  • Guru 14475 points

    In reply to Vincent Zhang1:

    Vincent-san,

    Thanks for your help.

    Kuramochi
  • Guru 14475 points

    In reply to TQ:

    Hi Vincent-san,

    Could you show me EMI data without CMCC filter if you have?

    Customer are considering to except for the filter for cost down.

    Best Regards,

    Kuramochi

  • Guru 14475 points

    In reply to Vincent Zhang1:

    Hi Vincent-san,

    Each graph has two data(purple one and blue or pink one).
    What is differences of these?

    Best Regards,
    Kuramochi

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