The copyright and authority for the interpretation of the products are reserved by MORNSUN
WRE_S-3WR2 & WRF_S-3WR2 2013.07.26-A/3 Page 2 of 7
WRE4805S-3WR2 ±5 ±300 ±15 79 1000 79
WRE4812S-3WR2 ±12 ±125 ±6 76 470 82
WRE4815S-3WR2 ±15 ±100 ±5 76 330 82
WRF4803S-3WR2 3.3 758 38 70 2700 75
WRF4805S-3WR2 5 600 30 82 2200 76
WRF4812S-3WR2 12 250 13 78 680 80
WRF4815S-3WR2 15 200 10 75 470 84
WRF4824S-3WR2
48
(36-75) 80
24 125 6 77
7 45
330 82
Note:①. Absolute maximum rating without damage on the converter, but it isn't recommended;
②. For dual output converter, the given value is the same for each output.
Item Test Conditions Min. Typ. Max. Unit
5V input -0.7 -- 12
12V input -0.7 -- 25
24V input -0.7 -- 50
Input Surge Voltage (1sec. max.)
48V input -0.7 -- 100
5V input 3.5 4 4.5
12V input 4.5 8 9
24V input 11 16 18
Start-up Voltage
48V input 24 33 36
VDC
Input Filter C Filter
Models ON Ctrl open or be insulated
Ctrl* Models OFF Connect high level voltage, and ensure the current into Ctrl to be 5-10mA
Note: *Please refer to "DESIGN CONSIDERATIONS" as the direction for use of Ctrl.
Item Test Conditions Min. Typ. Max. Unit
Output Voltage Accuracy 5% to 100% load -- ±1 ±3
load Output Voltage Accuracy
①
Input voltage range -- ±1.5 ±5
Output Voltage Balance Dual output, balanced loads -- ±0.5 ±1
Line Regulation Full load, Input voltage from low to high -- ±0.2 ±0.5
Load Regulation 5% to 100% load -- ±0.6 ±1
%
Transient Recovery Time -- 0.5 3 ms
Transient Response Deviation 25% load step change -- ±2.5 ±5 %
Temperature coefficient 100% load -- ±0.02 ±0.03 %/°C
②
-- 30 45
②
20MHz Bandwidth -- 50 100 mVp-p
Output Short Circuit Protection Continuous, automatic recovery
Note: ①.The max. no-load output voltage accuracy for WRF1203S-3WR2 and WRF4803S-3WR2 is ±8%;
②. Ripple and noise tested with "parallel cable" method. See detailed operation instructions at DC-DC application notes;
The max. output ripple for WRE2405S-3WR2 is 65mVp-p.
Item Test Conditions Min. Typ. Max. Unit
Isolation Voltage Input-Output, Tested for 1 minute,
leakage current less than 1 mA
3000 -- -- VDC
Isolation Resistance Input-Output, Test at 500VDC 1000 -- -- MΩ
Isolation Capacitance Input-Output, 100KHz/0.1V -- 30 50 pF
Switching Frequency(PFM Mode)
100% load, nominal input voltage -- 250 -- KHz
MTBF MIL-HDBK-217F@25℃ 1000 -- -- K hours
Case Material Plastic(UL94-V0)
Weight -- 4.9 -- g
ENVIRONMENTAL SPECIFICATIONS
Item Test Conditions Min. Typ. Max. Unit
Storage Humidity Non condensing -- -- 95 %
Operating Temperature Power derating (above85℃, see Figure 5) -40 -- 85 °C