China 1200W 54V 24A DC DC Power Supply

GPDD122M48-1A is a high-duty power supply with DC/DC single-output, 3U height. Due to the latest circuit design, it is compact and of reliable performance. The whole system is of high regulation and high output efficiency, provided with protection against input over/under-voltage, over-current, short circuit, output over-voltage and over-temperature.
Reliable isolation for faulted unit, alarms for overall system, and auto sharing are provided. N+1 (N<6)redundancy is available and the fan is applied for cooling. The system is designed according to the safety regulations, which strictly conforms to the safety standard of information technology.
2.1. Ambient Requirements
2.1.1 Operation ambient temperature: -33ºC~+65ºC (The module can normally work @ -33ºC and start up at rated power @ -40ºC)
2.1.2 Relative humidity: 5~95% (no-condensing)
2.1.3 Storage ambient temperature: -40ºC~+70ºC
2.1.4 Altitude: 0~4000m
2.1.5 Atmospheric pressure: 70~106KPa
2.1.6 Cooling: by fan
2.2. Input Properties

ItemUnitMinTypicalMaxTesting ConditionInput Rated Voltage Vdc192729 Input CurrentA 80 Input Inrush CurrentA 12021V InputInput Reflected Current1% Input currentRated voltage/rated load

2.3. Output Electrical Properties

ItemUnitMinTypicalMax.Testing ConditionOutput voltage rangeVdc525456The output voltage can be regulated at 1V through 4-digit toggle switch.Output voltage regulation rangeVdc54 5621.5V-29V Input voltageVdc52 5419V-21.5V Input voltageFactory set half-load rated voltageVdc53.95454.127V Input Output current Voltage regulation±1% Load regulation±0.5% Line regulation±0.5% Ripple (Vp-p)mV 150Rated input voltage/load, with 0.1uF film capacitor and 10uF high frequency electrolyte capacitor at the output, with oscilloscope band width of 20MHz.Output powerW 1200 Forced coolingOutput efficiency%85Temperature coefficient/ºC ±0.02% Transient response overshoot% ±5Load variation:
25%-50%-25% or 50%-75%-50%
Current variation rate: 0.1A/usPeriod:4msRecovery time for transient responseμS 200Turn-on timeS 3 Overshoot and undershoot @start-up/shutdown% ±5 Output rise-up timems550200Rise from 10% to 90%, rated loadCurrent sharing % ±5