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  • Resolved

LMR14030 EMI performance data

Expert 1670 points
Eng Lih Khaw

Replies: 8

Views: 4050

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

Expert 1670 points
Eng Lih Khaw
  • Intellectual 980 points
    Vincent Zhang1

    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 17805 points
    TQ

    In reply to Vincent Zhang1:

    Hi Vincent-san,

    Was this measured on the EVM?

    Best Regards,
    Kuramochi

  • Intellectual 980 points
    Vincent Zhang1

    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 17805 points
    TQ

    In reply to Vincent Zhang1:

    Vincent-san,

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

    Best Regards,
    Kuramochi
  • Intellectual 980 points
    Vincent Zhang1

    In reply to TQ:

    Hi Kuramochi,

    Yes, almost the same except the EMI filter.

    Regards,

    Vincent

  • Guru 17805 points
    TQ

    In reply to Vincent Zhang1:

    Vincent-san,

    Thanks for your help.

    Kuramochi
  • Guru 17805 points
    TQ

    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 17805 points
    TQ

    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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