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TPS61252 – About Soft Start

Guru 21045 points

Hi Gene-san,

 

Thank you always for your kind support!

Our customer has to use the large output capacitor(Cout=22uF , Cload=96.2uF).

Because, this is demand specifications of the load device.

Therefore, they are worrying that this device is broken by the large inrush current.

 

However, I’m understanding that this device is not broken.

Because, the current limit(1500mA(typ)) is working at startup if ILIM pin set to Vin.

Is my understanding correct?

And, could you please let us know if you have the concern point?

 

[Our customer conditions]

-Vin=2.3V to 4.2V (1cell)

-Vout=6.0V

-Iout=Around 570mA (peak current)

-Cout=22uF

-Cload=47uF*2 + 1uF*2 + 0.1uF*2=96.2uF

 

Regards,

Kanemaru