TPSM82810: Ramp time

Shuhei Goto

Part Number: TPSM82810

Hi team,

In D/S, ramp time (tRAMP) is 100 to 200 [us].

However, it seems to be more long time in start-up timing figure.
Can I use this IC as tRAMP less than 200us?

Best regards,

Goto

+1 Werner Lummer 5 months ago

Hi Shuhei,

is anything connected to the SS/TR pin? A capacitor on this pin will influence the soft start time, see datasheet section 9.4.5.

For example, the EVM has a 4.7nF on the SS/TR pin which results in about 1ms of soft start time, similar to what you measured.

Regards, Werner

0 Shuhei Goto 5 months ago in reply to Werner Lummer

Hi Wermer,

I missed important factor.
That's make sense!

Many thanks,
Goto

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