Honored Contributor
Honored ContributorWhat configuration mode are you using? Is the Stratix trying to load a configuration when you measure the temperature?
Do you have any programming/JTAG pin floating when the device is unconfigured? Do you have other sources of temperature nearby, such as power supplies, that would increase the temperature near the FPGA? Even if you don't have any shunt resistors on the power rails, there is an indirect method of measuring the supply current, if the DC/DC converters you are using have an external inductor. You can measure the average voltage across the inductor (with a low-pass filter and a voltmeter for example) and divide it by the DC resistance. It isn't very accurate, but it should tell you if you have an abnormal current on one of the supplies.
