F5F Stay Refreshed Hardware Desktop PSU with less than 1 ms "PWR_OK inactive to DC loss delay"

PSU with less than 1 ms "PWR_OK inactive to DC loss delay"

PSU with less than 1 ms "PWR_OK inactive to DC loss delay"

E
EeveeBoy64
Member
171
03-07-2023, 07:00 AM
#1
Hi, here are my questions about the PSU hold-up timings.
I’ve looked up some definitions online and I understand a few things:
hold-up time (>17 ms)
AC loss to PWR_OK hold-up time (ATX T5>16 ms)
PWR_OK inactive to DC loss delay (ATX T6> 1 ms)
T5+T6 equals the hold-up time
Timings under 17 ms may lead to issues during power interruptions, especially with a UPS.
A T6 time over 1 ms is acceptable, but a value below 0 is incorrect since the PSU sends a wrong power signal to the CPU timer chip.
I’m curious about what happens if the hold-up time falls between 0 and 1? Could this affect other components or cause damage?
Thank you for clarifying this for me.
E
EeveeBoy64
03-07-2023, 07:00 AM #1

Hi, here are my questions about the PSU hold-up timings.
I’ve looked up some definitions online and I understand a few things:
hold-up time (>17 ms)
AC loss to PWR_OK hold-up time (ATX T5>16 ms)
PWR_OK inactive to DC loss delay (ATX T6> 1 ms)
T5+T6 equals the hold-up time
Timings under 17 ms may lead to issues during power interruptions, especially with a UPS.
A T6 time over 1 ms is acceptable, but a value below 0 is incorrect since the PSU sends a wrong power signal to the CPU timer chip.
I’m curious about what happens if the hold-up time falls between 0 and 1? Could this affect other components or cause damage?
Thank you for clarifying this for me.

M
MrBoby89400
Member
66
03-07-2023, 08:00 AM
#2
usually no
M
MrBoby89400
03-07-2023, 08:00 AM #2

usually no