Tool/software:
Dear team,
The customer are using TPS54334 for their application. But they would like to get functional safety certification using current solution.
So they want to get Functional safety information. I know this device is not functional safety device but Could you provide the Pin FMEA data for TPS54334?
Please let me know your opinion.
Thank you.
Hello Gui,
Thank you for your support.
I have question regarding VSENSE port.
You mentioned, Once VSENSE pin is open or short to GND, " VOUT >> than programmed output voltage"
But we can see below comment at datasheet.
"The PGOOD pin is an open drain MOSFET which is pulled low when the VSENSE pin voltage is less than 84% or greater than 116% of the reference voltage Vref and asserts high when the VSENSE pin voltage is 90% to 110% of the Vref."
Once VSENSE pin is open or short to GND(less than 84% of the reference), I think the device recognize output under voltage and the PGOOD pin is pulled low. Is it right?
If the device recognize output under voltage (less than 84% of the reference) , what is next operation of TPS54334? Is it trying to up output voltage though The PGOOD pin is pulled low ?
And Once R6 is open at below schematic, what is operation of TPS54334? please let me know your opinion.
Thank you.
