DC/DC Converter
URF1D_QB Series
50W/75W/100W, wide input voltage,
isolated ®ulated single output
DC-DC converter
FEATURES
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Wide range of input voltage : 66-160V
Efficiency up to 92%
Low no-load power
Isolation voltage 3000VDC
Operating temperature range:-40℃~+100℃
Input under-voltage protection, output
over-voltage, over-current, short circuit,
over-temperature protection
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International standard: 1/4 brick
Meets requirements of UL60950 and railway
standard EN50155
Patent Protection RoHS
URF1D_QB Series is a high performance product designed for the field of railway applications. Output power contains 50W/75W/100W, no
min. load requirement, wide input voltage 66-160VDC, which allows the base plate temperature up to 100 ℃. Further product feathers
include input under-voltage protection, output over-voltage protection, short circuit protection, over temperature protection, remote
control and compensated, output voltage regulation functions. Meets the EN50155 railway standard and UL/EN60950 safety standards.
Widely used in the railway system and associated equipment.
Selection Guide
Input Voltage (VDC)
Nominal
(Range)
Input Voltage (VDC)
Efficiency (%, Typ)
@ Full Load
Max. Capacitive
Part No.
Output
Output Current
(mA)(Max./Min.)
Max.*
Load(μF)
Voltage(VDC)
URF1D24QB-50W
URF1D24QB-50WH
URF1D24QB-75W
URF1D24QB-75WH
URF1D24QB-100W
URF1D24QB-100WH
24
2083/0
3125/0
4167/0
92
92
92
3000
3000
3000
110
170
24
24
(66-160)
Note: *Absolute maximum rating without damage on the converter, but it isn't recommended.
Input Specifications
Item
Operating Conditions
URF1D24QB-100W(H)
Min.
--
Typ.
5/988
5/741
5/494
50
Max.
--
Unit
mA
Input Current (no-load / full load)
Nominal input
URF1D24QB-75W(H)
URF1D24QB-50W(H)
--
--
--
--
Reflected Ripple Current
Input Surge Voltage (1sec. max.)
Start-up Threshold Voltage
Under-voltage Shutdown Voltage
Start-up Time
Nominal input
--
--
-0.7
--
--
180
66
--
--
VDC
mS
--
55
--
25
--
Input Filter
Pi filter
Module switch on
Module switch off
Ctrl psuspended or connected to TTL high level (3.5-12VDC)
Ctrl connected to -Vin or low level (0-1.2VDC)
Ctrl*
Input current when switched off
mA
--
2
--
Note: * the voltage of Ctrl pin is relative to input pin -Vin.
Output Specifications
Item
Operating Conditions
Nominal input,10%-100% load
Min.
--
Typ.
--
Max.
±2
Unit
Output Voltage Accuracy
Line Regulation
Full load, the input voltage is from low to high
Nominal input,10%-100% load
--
--
±0.3
±0.5
%
Load Regulation
--
--
2014.12.09-A/1
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