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TPS63061: Power management forum

Part Number: TPS63061
Other Parts Discussed in Thread: TPS63060

When the input voltage was applied to the Vin terminal as shown below, the Vout voltage was not output by method (1).

(1) Apply 6V voltage of 4 alkaline AA batteries to Vin by switching (OFF → ON)

(2) Apply 6V voltage directly to Vin with a regulated DC power supply

The circuit is created as follows with reference to the recommended circuit in the data sheet.

The inductor used is made by Murata [FDSD0630-H-1 ROM = P3].

When I measured the voltage waveforms of (1) and (2), it became as shown in the image below.

(1) Blue: Vin, Red: Vout, Green: PG


(2) Blue: Vin, Red: Vout, Green: PG

Does the difference in operation affect the rise time to Vin?
Please tell me the probable cause and countermeasures.