Specifications

1.Wide input voltage range
2.High reliability, safety and credibility
3.Input and output complete isolation, strong protect

DC220V to DC48V20A DC-DC Converter

 

Model: DD220T4820

Introduction:

 

DC/DC Converter is specially designed for meeting the requirements of all kinds of communication equipments of communication and electric power departments, which adopts the high frequency switching technology and has many good points, including high accuracy voltage stabilizing, low output noise, strong capacity of resisting disturbance, small volume, light weight, beautiful external shape, etc.

 

The DD220T4820 use the PWM (pulse width modulation) technology with automatic current sharing function and N +1 backup function (N+1 combination of modules structure), which can be used in parallel. When the power supply module failure, it can safely auto-exit and alarm, which ensure that the power supply system works normally.

 

Features:

• With N +1 backup function
• Input and output complete isolation, safety and credibility
• Advance current control mode and stable & reliable circuit topological structure
• Using the inside air-cooling methods, with lower noise
• High reliability, Maintain Simply, quickly and easily
• Strong protection functions: output over/under voltage, overcurrent, short-circuit and input over/ under voltage, and overtemperature protection
• EMC characteristics: Consistent with the standard EN55022 CLASS B & IEC61000-4 LEVEL 3

 

Technical Parameter:

Technical Index	Performance Parameter
Input Voltage Range	180~360Vdc
Output Voltage Range	40~60Vdc
Output Rated Value	48 Vdc
Output Current	20 Adc
Load Regulation	≤0.5%
Power Grid Regulation	≤0.2%
Degree of unbalanceness for equalized current	≤±3%
Phone Weighted Noise Voltage	300~3400Hz    ≤2mV (CCITT)
Peak - Peak Noise Voltage	≤100mV
Wide Frequency Noise Voltage	3.4 ~ 150KHz   ≤100mV 0.15 ~ 30MHz   ≤30mV
Discrete Noise Voltage	3.4 ~ 150KHz  ≤5 mV 150 ~ 200KHz  ≤3 mV 250 ~ 500MHz  ≤2 mV 0.5 ~ 30MHz   ≤1 mV
Efficiency	≥90%
Dynamic Response	20% ~ 100% Step Load ≤200 us 170V ~ 265Vac Step to power grid ≤200 us
Output Overvoltage Protection	50±1 Vdc
Output Current Limiting Protection	22±0.5 Adc
Input High-voltage Current-limiting Protection	≤72±1 Vdc
Overtemperature Protection	85±5°C
Working Temperature	-10~50°C
MTBF	100,000 Hrs.
Weight	8 Kg
Dimension (W×H×D)	Rack-mounted: 483mm×88mm×325mm (19inch, 2U)