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LM5143-Q1: <= +/-1% output accuracy single output automotive controller

user4979989
Intellectual 2800 points
Part Number: LM5143-Q1

Hi team,

Would you please check if we have <= +/-1%(whole temp range) output accuracy single output automotive buck controller?

The output current > 10A, input voltage range 8-17V.

Thank you.

Regards,

Allen

  • 0
    TI__Mastermind 27030 points

    Hi

    if you use fixed output, the accuracy can meet +/-1%

    If you used adjustable output, the ref accuracy is 1%, with FB resistor  accuracy, it will be above 1%, so we suggest you use 0.1% accuracy resistor which can help improve the accuracy and it will be close to 1%

    Thanks

  • 0 in reply to Daniel Li14
    TI__Intellectual 2800 points

    Hi Daniel,

    Do you have any recommendation for single output buck controller solution?

    We can propose +/-1% for device level specification.

    Thank you.

    Regards,

    Allen

  • 0 in reply to user4979989
    TI__Mastermind 27030 points

    HI Allen

    for the adjustable Wide-Vin controller solution , the best reference accuracy we can achieve is 1% in full temperature range. Customer may need external high accuracy reference with opmap to adjust the FB to meet less than 1% accuracy.

    By the way, customer want to have all the product in all temperature range meet +-1% , or only for one product, in all temperature range need meet +-1% based on the setpoint of this product?

    If for single product, the temperature shift of reference in all temp will be 0.3%.

    If for all product, customer need consider output regulation may worse than the the reference accuracy 

    and one more thing is how customer deal with load transient? cause the Vo will out of +-1%