TPS3870-Q1: Delay time adjustment using CT capacitor

Ammasi Kani

Part Number: TPS3870-Q1

Tool/software:

Hi Team,

We have a requirement to have delay time of > 100 seconds to 120 seconds, is this possible with TPS3870-Q1 IC using CT capacitor?

Is there any limited programmable time delay for this IC?

Regards,

Ammasi Kani V

5 days ago

0 Clemens Ladisch 5 days ago

Guru 316690 points

Section 9.1.2.2 says:

There is no limitation on maximum capacitor.

But note that a capacitor with a large leakage current will make the delay time less accurate. If the leakage current is larger than I_CT, then the capacitor will never be charged.

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TPS3870-Q1: Delay time adjustment using CT capacitor