Overload & Overcurrent Protections (Auto-Recovery)
The power supply’s Overload (OLP) and Over current (OCP)
Protections will be activated when output current (IO) exceeds its
specification as defined on Page 3 under “Protections. In such
occurrence, the output voltage (VO) will start to droop and once the
power supply has reached its maximum power limit, the protection
is activated and the power supply will go into “Hiccup mode” (Auto-
Recovery). The power supply will recover once the fault condition
of the OLP and OCP is removed and IO is back within the
specifications.
It is not recommended to prolong the duration of IO when it is less
than OLP/OCP point, but greater than100%, since it may cause
damage to the PSU.
Short Circuit Protection (Auto-Recovery)
The power supply’s output OLP/OCP function also provides
protection against short circuits. When a short circuit is applied, the
output current will operate in “Hiccup mode”, as shown in the
illustration in the OLP/OCP section on this page. The power supply
will return to normal operation after the short circuit is removed.
Overvoltage Protection (Auto-Recovery)
The power supply’s overvoltage circuit will be activated when its
internal feedback circuit fails. The output voltage shall not exceed
its specifications defined on Page 3 under “Protections”.
Over Temperature Protection (Auto-Recovery)
As described in load de-rating section, the power supply also has
Over Temperature Protection (OTP). In the event of a higher
operating temperature at 100% load, the power supply will run into
OTP when the operating temperature is beyond what is
recommended in the de-rating graph. When activated, the output
voltage will go into bouncing mode until the temperature drops to
its normal operating temperature as recommended in the de-rating
graph.