PJ-12V15WXNA Datasheet, PDF (10/11 Pages) Delta Electronics, Inc. – PJ Open Frame Power Supply

TECHNICAL DATASHEET
PJ Open Frame Power Supply
12V 15W 1 Phase / PJ-12V15W□NA
Dynamic Response
The power supply output voltage will remain within ±5% of its steady state value, when subjected to a dynamic load from 0 to 50% and
50 to 100% of its rated current.
■ 0 to 50% Load
■ 50 to 100% Load
Inrush Current
Inrush current is the peak, instantaneous, input current measured
and, occurs when the input voltage is first applied. For AC input
voltages, the maximum peak value of inrush current will occur
during the first half cycle of the applied AC voltage. This peak
value decreases exponentially during subsequent cycles of AC
voltage.
Overload & Overcurrent Protections
The power supply’s Overload (OLP) and Overcurrent (OCP)
Protections will be activated when output current exceeds 105%
of IO (Max load). In such occurrence, the 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
<105% but >100%, since it may cause damage to the PSU.
Overvoltage Protection
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”.
The power supply should be latch.
Short Circuit Protection
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.
Over Temperature Protection
As mentioned above, 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 latch mode until the mains is reapplied and the temperature
drops to its normal operating temperature as recommended in the
de-rating graph.
10
All parameters are specified at 25°C ambient unless otherwise indicated.
www.DeltaPSU.com (November 2014, Rev. 01)