Model Input Voltage Output Voltage Size (In)
DCK44332-01 -40 - -75 VDC V1 V2 15.70 x 5.10 x 1.57
+12V@ 366.7A (2 or 3 inputs active) 3.3V/10A
+12V @ 183.33A (1 input active)
INPUT
Input Voltage -40 - -75 VDC
Frequency N/A
Inrush current 70A Max @cold turn-on and 90A Max @ hot turn-on
Efficiency 92%@100% load/93%@50%load/90% at 20% load (1 input/2 inputs active)
93%@100% load /94%@50% load /90% at20% load (3 inputs active)
Power Factor N/A
EMI RE Meets EN55032/CISPR 32 and FCC Part 15 Class A
CE Meet EN300386 (w DC Input) Class A
Harmonics N/A
Isolation basic insulation between primary- secondary and input-PE ground, reinforced insulation between each of the three 48VDC inputs lines.
Leakage current N/A
Output
Output Power 2211W max @ 1 input active, 4422W max @ 2 inputs active and 4433W max at 3 inputs active.
Output Voltage Both outputs are electrically isolated.
Line regulation +/-3% for 12V, ±0.1V for 3.3VSB
Load regulation +/-3% for 12V, ±0.1V for 3.3VSB(3.5V MAX @no load)
Ripple & Noise < 120mV pk-pk (12V), <50Mv pk-pk(3.3VSB)
Rise time 5~ 300 ms
Turn On Delay < 2.5 sec
Dynamic response 11.2V min<12V<12.6 Max, 3.135V<3.3VSB<3.465V
Over current protection 115-130% of Full load(12V), 105%-120% of Full load(3.3VSB)
Short circuit protection delay<80ms, Latching Type
Over voltage protection Latching Type
Current share Current sharing via share bus
EEPROM & I2C bus PS with a serial EEPROM communicates information to the system processor through I2C bus
Microcontroller PSU remote shut off, LED status monitored and controlled through microcontroller.
Thermal protection PWM Converter disabled when the internal temperature exceeds safe operating range
Under voltage Capable to withstand any input under voltage for unlimited time without damage.
Power Fail signal A Low True Open collector signal to indicate encounter some failure. Capable of driving <0.4v with a load of 4mA.
Power Supply Present A Low True Open collector signal to sense the number of power supplies in the system (operational or not)
Hot swapping Hot swappable
Environmental
Operating Temperature -5° to +55° C
Cooling Internal fan
Safety
Safety Approval:
UL UL 60950-1 & UL 62368-1
CB IEC 60950-1 & IEC 62368-1
CE-EMC EN55032
BSI S 13252 (Part 1): 2010 + A1: 2013 + A2 :2015 / IEC 60950-1: 2005 + A1: 2009 + A2 : 2013
CQC GB4943.1