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TPS7A15: maximum Output capacitor capacitance

Ferry Huang
Prodigy 40 points
Part Number: TPS7A15
Other Parts Discussed in Thread: TLV758P

Tool/software:

Comparing the recommended maximum output capacitors of the TPS7A15 and TLV758P，
we found that the TPS7A15 recommends only 22µF，
which is significantly lower than the 220µF recommended for the TLV758P。
Why does this difference exist?
What happens if the total load capacitance of TPS7A15 larger than 22µF, such as 100µF ?

Thank you
Ferry

  • 0
    TI__Expert 5992 points

    Hey,

    Since they are different chips with different design parameters, they will inherently have different characteristics.  The max capacitance values are what we found the device to be stable with. Increasing the capacitance beyond the maximums might lead to some stability and transient response issues.

    Hope this helps,