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TPS62160: output acuracy calculate

tao niu
Prodigy 110 points
Part Number: TPS62160
Other Parts Discussed in Thread: TPS62161, ,

Dear supporter,
please confirm a question on DC output acuracy calculate.


1)normally DC output acuracy should consider FB acuracy and external resistor divider acuracy, am I right? i find a vidoe instruction in https://training.ti.com/how-meet-fpgas-dc-voltage-accuracy-and-ac-load-transient-specification


2)in TPS6216x spec, page6,note5, it says 4%acuracy “For fixed voltage versions, the (internal) resistive feedback divider is included.”. this means this is for TPS62161/2/3, right?
for adjustable TPS62160, how to calculate. how much is the fb acuracy?

3)dose automobile component(TPS62160-Q1)have better output accuracy?

4)in my understanding, acuracy data refer to Mass production data distribution, most IC in use will not be so big as close to the range limit, am I right?

  • +1
    TI__Mastermind 45820 points

    Hi Tao,

    1: Yes, you are right.

    2: For fixed voltage version, the internal resistive feedback divider is included. That is for TPS62161/2/3 which is no external feedback resistor divider. 

               For TPS62160 output voltage calculation,  please refer to datasheet section 9.2.2.2 on page 14. Also refer to above video for accuracy calculation.

               TPS62160 FB accuracy is +/-3%.

    3. TPS62160-Q1 has similar output accuracy.

    4. Yes, your understanding is correct.

    Thanks,

    Nancy

  • 0
    Prodigy 110 points

    Dear Nancy,

    Thank you for your kindly help.

    BR,