TPS61200 - Operating two devices in parallel, what is the leakage current for the device that is disabled?

David Seymour

Other Parts Discussed in Thread: TPS61200

I have an application where two TPS61200 devices have their Vout pins connected together. Both devices are set to produce the same output voltage but only one device is enabled at a time (each device has a different power source). Is this type of configuration allowed with the TPS61200? What is the leakage current for the device that is disabled when the other one is enabled?

Can Crhis Glaser please respond to this message, he has responded to other TPS61200 style questions.

Best Regards,

-David

over 14 years ago

0 Chris Glaser over 14 years ago

TI__Guru**** 150830 points

Thanks for searching the forum first. Did you happen to see this design note: http://e2e.ti.com/support/power_management/non-isolated_dcdc/w/design_notes/tps61200-vout-prebias-above-programmed-value.aspx

So, yes if one IC is disabled, you can apply a voltage to the output with minimal leakage. Vin should simply be left floating in this case.

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TPS61200 - Operating two devices in parallel, what is the leakage current for the device that is disabled?