Part Number:MSP432E401Y
Hi,
I have the MSP432E401Y launchpad. I loaded the demo program of "USB host mouse". When I that program and connect mouse to OTG the temperature shoots up. I am not sure what the actual temperature is but its hot enough that I cant keep my finger on the IC for more than 5 seconds.
My question is is this normal?
Some observations that I think might be important:
1.The IC heats up only after I connect the USB mouse to USB OTG.
2.If I remove the mouse in between the heating doesn't stop
3.The heating will stop no matter what if I remove the 5V power jumper that supplies the whole board also the USB OTG. (keep in mind the controller works on 3.3V and the controller is still working just fine without the 5V power)
4.The demo code works just fine though even at those temperatures. I can see mouse movement values in the UART terminal just fine.
5.No the IC dose not heat up with other demo codes that are not USB host. It only happens for USB host demos.
6.I don't think the IC is crossing the thermal junction i.e. 125C. My job is making 3D printers I know that u cannot even keep your finger on 125C for more than 0.5 seconds. I suspect the temperature to be around 70C not sure though.
I am afraid to leave it at those temperatures because the board is damn costly. If it was a 4$ Arduino I wouldn't give a damn even if it caught fire. But these TI controllers are freaking costly. I cant risk these. Also it takes very long to ship.