TPS715A: Output capacitance value.

Kengo.Y

Part Number: TPS715A

Hi team,

Recommended values differ between new die and old die.

What is the effect of using a 0.47uF capacitor in the new die?
Why is the difference in capacitor values between A and B?

BR,
Kengo.

over 1 year ago

0 Nick Butts over 1 year ago

TI__Guru 50025 points

Hi Kengo,

The way the device is spec'd I expect the new device to be unstable if 0.47uF is used. I will have to get back to you on the "why".

Regards,

Nick

0 Kengo.Y over 1 year ago in reply to Nick Butts

Guru 11155 points

Hi Nick,

Do you have any update?

BR,
Kengo.

+1 Nick Butts over 1 year ago

TI__Guru 50025 points

Hi Kengo,

The reason that the new device seemingly has a different spec than the old device is that the datasheet for the old device was not clear in the language on whether the 0.47uF requirement was capacitance or a capacitor requirement, and the documentation for the old device is limited. The new device is stable with 1uF capacitor or 0.47uF capacitance (~50% derated 1uF).

Regards,

Nick

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TPS715A: Output capacitance value.