TPS54200: TPS54200 datasheet figure 32

Hollis Liu

Part Number: TPS54200

Hi Team,

I want to know the reason for duty change of SW waveform in figure 32 in datasheet. Why does the duty of SW waveform change after the output becomes stable from starting up? Thanks.

over 4 years ago

0 Frank Qiu over 4 years ago

TI__Genius 15776 points

Hi Robin, could you help on this case.

0 Hollis Liu over 4 years ago in reply to Frank Qiu

TI__Intellectual 2595 points

hello team,

could you please help to look into my questions? Thanks.

0 Yuting Shao over 4 years ago in reply to Hollis Liu

TI__Genius 13001 points

Hi dear mentor!

Sorry for replying so late. During start-up, the voltage of Rsense keeps rising until it reaches 200mV and internal EA output also varies at the same time, which results in various duty cycle. After Vsense reachs 200mV, the EA output becomes stable.

BR,

Robin