i do have a question to the delay time of the ADP505X overvoltage protection. For OCP/HICCUP a value of 7x tss is given.
Is there any information about the shutdown delay if the overvoltage threshold is exceeded? Is the OVP threshold of 124% adjustable or fixed?
Is it right that the power good signal dissapear in an case of an overcurrent and/or overvoltage?
Thanks and kindly regards
Good day. Please be noted that the latch-off protection for short-circuit and overvoltage conditions is optional and is enabled:
ADP5054 has optional latch-off protection only for short-circuit conditions.
The 124% OVP threshold is fixed. A channel latches off instantaneously upon detection of any overvoltage event. No delay is present.
The power-good signal, on the other hand, goes low only whenever the output voltage falls below 87.2% (typical) of the nominal value for a delay time greater than approximately 50 microseconds. Any OCP or OVP event would cause the output voltage to fall and hence make the PGOOD signal go low.