DC/DC Converter
URF1D_QB-75W Series
75W, wide input voltage, isolated & regulated single
output DC-DC converter
FEATURES
Wide input voltage range: 66-160V
High efficiency up to 91%
Low no-load power consumption
Isolation voltage 3000VDC
Operating temperature range: -40℃ to +100℃
Input under-voltage protection, output short
circuit, over-current, over–voltage,
over-temperature protection
International standard: 1/4 brick
Meets requirements of railway standard
EN50155
Patent Protection RoHS
URF1D_QB -75W Series is a high performance product designed for the field of railway applications. The DC/DC converters feature 75W
output power, no min. load requirement, wide input voltage of 66-160VDC, And allow the high base plate temperature(up to 100℃). The
products also provide input under-voltage protection, output over-voltage protection, short-circuit protection, over-temperature
protection, remote control and compensation, output voltage regulation functions. The series meet railway standard EN50155 . And target
railway system.
Selection Guide
Input Voltage (VDC)
Output
Efficiency (%, Typ)
@ Full Load
Max. Capacitive
Load(µF)
Part No.
Nominal
Max.*
Output
Voltage(VDC)
Output Current
(mA)(Max./Min.)
(Range)
URF1D05QB-75W
5
15000/0
86/88
7500
URF1D05QB-75WH
URF1D12QB-75W
URF1D12QB-75WH
URF1D15QB-75W
URF1D15QB-75WH
URF1D24QB-75W
URF1D24QB-75WH
12
15
24
6250/0
5000/0
3125/0
87/89
87/89
89/91
6000
4700
3000
110
170
(66-160)
Note: *Exceeding the maximum input voltage may cause permanent damage.
Input Specifications
Item
Operating Conditions
Nominal input voltage
Nominal input voltage
Min.
--
Typ.
5/774
5/766
5/766
5/749
50
Max.
Unit
mA
URF1D05QB-75W(H)
15/793
15/783
15/783
15/766
--
URF1D12QB-75W(H)
URF1D15QB-75W(H)
URF1D24QB-75W(H)
--
Input Current (no-load / full load)
--
--
Reflected Ripple Current
Surge Voltage (1sec. max.)
Starting Voltage
--
-0.7
--
--
180
--
VDC
mS
66
Input Under-voltage Protection
Starting Time
--
58
--
--
25
--
Input Filter
Pi filter
Unavailable
Hot Plug
Ctrl open circuit or connected to TTL high level
(3.5-12VDC)
Module switch on
Module switch off
Ctrl*
Ctrl connected to -Vin or low level (0-1.2VDC)
Input current when switched off
mA
--
2
--
Note: * the voltage of Ctrl pin is relative to input pin -Vin.
2017.07.19-A/3
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