Eamon, Pardon me for butting in here, but it seems to me that you ought to solve over-temperature problems by redesigning the board cooling system, rather than raising the shutdown temperature in the configuration. I can offer some guidance offline, if you'd care to send me a few photos of the SNAP board enclosure, and some information about your operating environment and temperature stability requirements.
On Jul 24, 2021 7:19 PM, "Eamon Egan, Mr" <[email protected]> wrote: External Email Hello, We are having thermal shutdown problems we are pretty sure are coming from the fusion controllers, so I thought I’d have a look at the shutdown temperature thresholds to see if they could be raised. I went and loaded up the SNAP fusion power chip configuration files from https://github.com/jack-h/snap/tree/master/pwrctrl, and I have a couple of questions: 1. There are 3 files named as follows: UCD9248 5.8.0.11400 Address 52 Project File_gpio.xml UCD9248 5.8.0.11400 Address 53 Project File_gpio.xml UCD9248_addr_52d.xml Since there are two controllers (U40 and U42), what is the 3rd file for? 2. In the configurations, all of the rails are set for a maximum temperature of 80C; most of them are set to shut down and lock out (never restart) when this temperature is reached. All three of the switching module data sheets specify a maximum temperature of 85C. The 10A dual-output module datasheet indicates that this is a junction temperature; the other two don’t specify what temperature is measured. Does anyone know if the sensed temperature is intended to be the ambient temperature which is specified as max 85C, or some other temperature that we could run hotter than this? How was the 80C threshold arrived at? If need be, I can try and clarify this with TI. Best regards, Eamon -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To view this discussion on the web visit https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/YQBPR0101MB4163C5F16C6F19BF2536C0629DE79%40YQBPR0101MB4163.CANPRD01.PROD.OUTLOOK.COM<https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/YQBPR0101MB4163C5F16C6F19BF2536C0629DE79%40YQBPR0101MB4163.CANPRD01.PROD.OUTLOOK.COM?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/f038faa1-147e-4f5c-a06b-658a04a67e39%40email.android.com.
