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TPS2511: TPS2511 failing to trip thermal shutdown

Kevin Ginunas
Expert 5815 points
Part Number: TPS2511

Team,

My customer is using TPS2511DGN and it will not trip thermal shutdown. Please find details listed below.

 

Issue details include:

Under 2A load and high ambient temperature the IC is left running for a day. The temperature of the IC is not reaching the rated level for thermal protection so it does not shutdown or hiccup. 1 in 5 of these IC's have either the D+/D- pins shorted to the +5V Vbus or to GND once this test has been completed. The IC then cannot communicate with a device and no charging occurs, but voltage still exists on Vbus and can still load 2A resistively.

 

Has this part ever exhibited this behavior in the past?

 

Thanks for your support.

 

Best Regards,

Kevin Ginunas

Analog FAE
kevin.ginunas@ti.com