Hello all,
I'm evaluating the STM32H743VIT6 on a third-party development board. I tested it with the system clock configured at 480 MHz (double checked everything, and all looks absolutely fine in terms of configuration). I did enable the "overdrive" setting as is done in the LL example (PWR_VOS0_480MHZ).
Thing is, it gets very hot while running at 480 MHz (haven't measure exact temperature, but one can't leave a finger on it for more than a couple seconds, so I'd say close to 70°C).
Maybe that's fully normal and this chip in this package (LQFP-100) can't be run at 480 MHz. I'm not sure. I configured the clock for 400 MHz instead (and no overdrive), and the temperature drops a lot. It's a bit warm, but that's it. So fully normal.
Any tips to run it at 480 MHz, or is it a lost cause? Going for a larger package (LQFP-208?) for my application is not an option. Would a small heatsink be an option? Or is running this at 480 MHz just not recommended at all? Is the overdrive mode needed?
Thanks for any pointers! Yes, 400 MHz is already a decent frequency, but 480 MHz is a 20% increase, not negligible.
