Power consumption on LPC4350 Hitex Board

[lpcware]

Content originally posted in LPCWare by MaSt on Sun May 20 23:42:52 MST 2012
Hi,
I'm seeing high temperatures (>55°C) on the LPC4350 of Hitex-Eval board (Rev A4). It runs the delivered firmware without any changes. The current-measurement over JP30 (5V) shows ca. 500mA, over JP31 (+3V3) ca. 130mA and over JP16 (+3V3C) ca. 280mA. The current consumption seems to be too high to me, but due lack of information in the datasheet i do not know what is normal. Does anybody measure also this high temperatures on the LPC4350?

Thanks for help.

[lpcware]

Content originally posted in LPCWare by david_sh on Mon Jun 25 00:34:55 MST 2012
it is ok in my LPC4350_EVK, thanks a lot!

[lpcware]

Content originally posted in LPCWare by MaSt on Fri Jun 15 02:39:31 MST 2012
Hi,
it seems that the Jumper SV6 is not configured correctly for the delivered firmware. Opening the pairs 5-6, 7-8 and 15-16, 17-18 of SV6 worked for me in this matter.

[lpcware]

Content originally posted in LPCWare by david_sh on Thu May 31 03:54:25 MST 2012
I have met the same issue, I found the LPC4350 of Hitex A4 is very hot, more than 50°C, the firmware and jumper settings is Hitex factory setting, I bought the dev board this week, and i changed nothing, can anybody help me to check it? thanks a lot!

[lpcware]

Content originally posted in LPCWare by PhilYoung on Mon May 21 23:38:55 MST 2012
I didn't see any significant temp rise on the Hitex board, and on my own board I see around 350mA total current for the board @ 5V, a significant proportion of this being consumed by the external devices and analog when running at just over 200 MHz.

If the 4350 is getting hot I would be inclined to check all the jumpers and io port configurations as it sounds like you might have some IO contention.

There are a a number of external devices connected to the 4350 which can cause IO contention if they the pins are not configured properly, the demo code appears to assume that you have set the jumpers correctly although it doesn't give specific jumper settings for any of the examples.

NXP did some detailed power measurements using the LPC1850 and extrapolating to the LPC4350 you should see around 135mA @ 180mHz with everything active.

regards

Phil.