Hi,
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
Jan
Hello!
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.
Regards,
Migs
Hello!
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.
Regards,
Migs
