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TPS7A8300: Transient Load Behavior Dip and spikes for large current transient load

Part Number: TPS7A8300

rghem:

 Hi Ryan/Kylie,

Hi , I testing the transient response of the TPS7A8300. the slow start capacitor is 10nF giveing a theoretical max startup time.  I put a very low ESR (0.5ohm so parallel would be 0.25ohm) 1000uF (so total is 2000uF) tantalum capacitor directly at the output of the TPS7A8300.  Load is no turn on so literally charging the output capacitor.  input is +5V and there is only a small 10uF Tantalum capacitor at the input of TPS7A8300. I am trying to undersand the waveform why it behave (when TPS7A8300 is enabled, small DIP in upstream voltage and as the TPS7A8300  reach the set voltage, there is a dip and spikes.  pls explain to me the behavior of the spikes and dip it appears the TPS7A8300 . This just to undertand the transient load behavior so i should need to know what is the max limit of the output capacitance and to optimised tthe input bulk capacitor.