Guangdong Kingwood Electronic Co., Ltd.
Main products:HID Automatic Headlight (HID Conversion Kits, All-In-One HID), Communication Power Supply
Contact Us
  • Contact Person : Ms. Nee Rachel
  • Company Name : Guangdong Kingwood Electronic Co., Ltd.
  • Tel : 86-20-61031498
  • Fax : 86-20-61031486
  • Address : Guangdong,Guangzhou,5/f, Block C, Dadi Industrial Park, Yongdong Road, Tangxia, Guangzhou City, Guangdong Province. China
  • Country/Region : China
  • Zip : 510630

DC220V to DC48V30A DC DC Converter

DC220V to DC48V30A DC DC Converter
Product Detailed
1.Wide input voltage range 2.High reliability, safety and credibility 3.Input and output complete isolation, strong protect

DC220V to DC48V30A DC DC Converter

Model: DD220T4830


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 DD220T4830 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.


With N +1 backup functionInput and output complete isolation, safety and credibilityAdvance current control mode and stable & reliable circuit topological structureUsing the inside air-cooling methods, with lower noiseHigh reliability, Maintain Simply, quickly and easilyStrong protection functions: output over/under voltage, overcurrent, short-circuit and input over/ under voltage, and overtemperature protectionEMC characteristics: Consistent with the standard EN55022 CLASS B & IEC61000-4 LEVEL 3

 Technical Parameter:

Technical Index

Performance Parameter

Input Voltage Range


Output Voltage Range


Output Rated Value

48 Vdc

Output Current

30 Adc

Load Regulation


Power Grid Regulation


Degree of unbalanceness for equalized current


Phone Weighted Noise Voltage

300~3400Hz    ≤2mV (CCITT)

Peak - Peak Noise Voltage


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



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

33±0.5 Adc

Input High-voltage Current-limiting Protection

≤72±1 Vdc

Overtemperature Protection


Working Temperature



100,000 Hrs.


8.0 Kg

Dimension (W×H×D)

Rack-mounted: 483mm×88mm×325mm (19inch, 2U)

DC220V to DC48V30A DC DC Converter

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