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TPS61022: Switching loads and transient improvement

Part Number: TPS61022

Hello,

I'm designing with TPS61022 and I have a switching load connected to it.

The behaviour of the load is the following:

The schematic of the board is:

Below the measurement at 2.4V input:

If the input voltage is decreasing, the output drop is increasing.

I would like to have a maximum output drop below 300mV, if possible.

My system is required to be working down to 2.0V input.

Waiting for your suggestions I wish you a nice day

Kind regards

Alessandro