TPS22810: Unexpected discharge current

Takahiro Saito

Part Number: TPS22810

Hi team,

In the condition of VIN=12V and EN is pulled down, when my customer applied 2.5V to Vout, they have seen an unexpected sink current into TPS22810 even though they left QOD open. The sink current into TPS22810 amounts to 3mA.

I couln't believe there is a leakage path from Vout to the inside of TPS22810 in the condition of QOD = open. But, just in case, could you check if there is the leakage path from Vout to inside of TPS22810?

[Condition]

VIN : 12V

EN : 0V

QOD : Open

CT : 2200pF

GND : 0V

I'm asking the waveform to customer. But, I appreciate it if you could check above question in advance.

Regards,

Saito

over 4 years ago

0 dimitri james over 4 years ago

TI__Genius 10652 points

Saito-san,

Let me confirm this on the bench today and see if there is any current into the device,

then i will confirm it and post an update back here.

Best

Dimitri

0 Takahiro Saito over 4 years ago in reply to dimitri james

TI__Expert 5455 points

Hi Dimitri-san,

Thanks! And, I apologize but I want to correct one thing in my last post. They measured 0.3mA of sink current, not 3mA.

They are just before the mass production. So, this is an urgent request. Sorry for rush you, but I appreciate it if you could check the behavior today.

Regards,

Saito

0 dimitri james over 4 years ago in reply to Takahiro Saito

TI__Genius 10652 points

Saito-san,

I will follow up with you by email.

Best

Dimitri

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TPS22810: Unexpected discharge current