This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS62823: EN pin drop at power up

Part Number: TPS62823

Hi,

My customer find the EN pin drop waveform at power up.

Could you please let me know the reason of this behavior.

It is occurred before Iout rising timing and Switching start timing. They cannot find Vin drop.

Does TPS62823 EN pin have around 4uA sink current at internal circuit power up? (0.4V drop = 100kohm(Vin to EN) x 4uA)

Vin and EN, same timing power up (pulled up with 100kohm )

Ch1:Vin

Ch2:EN

Ch3:SW

Ch4:Iout

Vin power up >> Then, EN ON

Ch1:Vin

Ch2:EN

Ch3:SW

Ch4:Iout

Thanks

Muk