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)
Input Voltage (VDC)
Output
Voltage(VDC)
24
110
(66-160)
170
24
24
Output Current
(mA)(Max./Min.)
2083/0
3125/0
4167/0
Part No.
URF1D24QB-50W
URF1D24QB-50WH
URF1D24QB-75W
URF1D24QB-75WH
URF1D24QB-100W
URF1D24QB-100WH
Nominal
(Range)
Max.
*
Efficiency (%, Typ)
@ Full Load
92
92
92
Max. Capacitive
Load(μF)
3000
3000
3000
Note: *Absolute maximum rating without damage on the converter, but it isn't recommended.
Input Specifications
Item
Input Current (no-load / full load)
Reflected Ripple Current
Input Surge Voltage (1sec. max.)
Start-up Threshold Voltage
Under-voltage Shutdown Voltage
Start-up Time
Input Filter
Module switch on
Ctrl*
Module switch off
Input current when switched off
Note: * the voltage of Ctrl pin is relative to input pin -Vin.
Operating Conditions
URF1D24QB-100W(H)
Nominal input
Nominal input
URF1D24QB-75W(H)
URF1D24QB-50W(H)
Min.
--
--
--
--
-0.7
--
--
--
Typ.
5/988
5/741
5/494
50
--
--
55
25
Pi filter
Max.
--
--
--
--
180
66
--
--
Unit
mA
VDC
mS
Ctrl psuspended or connected to TTL high level (3.5-12VDC)
Ctrl connected to -Vin or low level (0-1.2VDC)
--
2
--
mA
Output Specifications
Item
Output Voltage Accuracy
Line Regulation
Load Regulation
Operating Conditions
Nominal input,10%-100% load
Full load, the input voltage is from low to high
Nominal input,10%-100% load
Min.
--
--
--
Typ.
--
--
--
Max.
±2
±0.3
±0.5
%
Unit
2014.12.09-A/1
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
URF1D_QB Series
Transient Recovery Time
Transient Response Deviation
Temperature Drift Coefficient
Ripple & Noise *
Output voltage Regulated range(Trim)
Output voltage remote
compensation(Sense)
Output Over-voltage Protection
Output Over-current Protection
Output Short circuit Protection
Note: * The measuring method of ripple and noise, please refer to Fig. 1 .
25% load step change
Full load
20MHz bandwidth
--
--
--
--
-10
--
110
300
±3
--
100
--
--
--
130
500
±5
±0.03
300
10
5
140
180
μs
%
%/℃
mVp-p
%
%Vo
%Io
Input voltage range
110
Continuous
General Specifications
Item
Insulation
Voltage
Input-output
Input-case
Output-case
Operating Conditions
Input-output, with the test time of 1 minute
and the leak current less than 1mA
Input-output, insulation voltage 500VDC
Input-output, 100KHz/0.1V
PFM mode
MIL-HDBK-217F@25℃
Min.
3000
1500
1500
1000
--
--
500
Typ.
--
--
--
--
2200
220
--
Max.
--
--
--
--
--
--
--
MΩ
pF
KHz
K hours
VDC
Unit
Insulation Resistance
Isolation Capacitance
Switching Frequency
MTBF
Environmental Specifications
Item
Base- Plate Temperature Range
Over-temperature Protection
Operating Conditions
Within the operating temperature curve
Base- Plate Temperature
Natural convection
URF1DxxQB-100W
Thermal
Resistance
URF1DxxQB-100WH
200LFM convection
400LFM convection
1000LFM convection
Natural convection
200LFM convection
400LFM convection
1000LFM convection
Storage Humidity
Storage Temperature
Lead Temperature
Cooling Test
Dry Heat
Damp heat
Shock and Vibration Test
Welding spot is 1.5mm away from the casing,
10 seconds
Non-condensing
Min.
-40
--
10.7
6.0
5.0
4.0
5.1
2.8
2.2
1.8
5
-55
--
Max.
100
115
--
--
--
--
--
--
--
--
95
125
300
EN60068-2-1
EN60068-2-2
EN60068-2-30
IEC/EN61373
℃
%RH
℃/W
Unit
℃
Physical Specifications
Casing Material
Weight
URF1D24QB-50W、URF1D24QB-75W、URF1D24QB-100W
URF1D24QB-50WH、URF1D24QB-75WH、URF1D24QB-100WH
Black flame-retardant and heat-resistant plastic (UL94-V0)
46g (Typ.)
76g (Typ.)
Natural convection or Forced convection
Cooling method
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
URF1D_QB Series
EMC Specifications
Item
EMI
Conducted Disturbance
Radiated Emission
Electrostatic Discharge
Radiation Immunity
Conducted disturbance
Immunity
EMS
EFT
Test Conditions
150KHz-30MHz Class B (see Fig. 2 for recommended circuit)
30MHz-1GHz Class B (see Fig. 2 for recommended circuit)
Contact ±6KV, Air ±8KV
10V/m
10Vr.m.s
±2KV(5KHz, 100KHz)(see Fig. 2 for recommended circuit)
±2KV(1.2μs/50μs 2Ω), (see Fig. 2 for recommended circuit)
±4KV(1.2μs/50μs 12Ω), (see Fig. 2 for recommended circuit)
±1.8KV (5/50µs 5Ω), (see Fig. 2 for recommended circuit)
Immunities of short
interruption
100%-0%, 10ms (see Fig. 2 for recommended circuit)
perf.Criteria B
perf.Criteria A
perf.Criteria A
perf.Criteria B
perf.Criteria B
perf.Criteria B
perf.Criteria B
Test Procedure
CISPR22/EN55022
CISPR22/EN55022
IEC/EN61000-4-2
GB/T17626.2
IEC/EN61000-4-3
GB/T17626.3
IEC/EN61000-4-6
GB/T17626.6
IEC/EN61000-4-4
GB/T17626.4
IEC/EN61000-4-5
GB/T17626.5
EN50155
EN50155
Surge Immunity
Efficiency Curves
Efficiency Vs input Voltage (Full Load)
100
Efficiency Vs Output Load(
Vin=110V
)
100
95
URF1D24QB-100W(H)
URF1D24QB-75W(H)
95
Efficiency(%)
Efficiency(%)
URF1D24QB-75W(H)
URF1D24QB-100W(H)
URF1D24QB-50W(H)
90
85
80
75
70
65
URF1D24QB-50W(H)
90
85
80
66
70
80
90
100 110 120 130 140 150 160
60
5
10
20
30
40
50
60
70
80
90
100
Input Voltage(V)
Output Current Percentage(%)
Thermal Curves
URF1D24QB-100W Thermal Curves (Vin=110V)
120
URF1D24QB-100WH Thermal Curves (Vin=110V)
120
100
100
No Heatsink
Natural Convection
Output power(W)
80
Heatsink
Natural Convection
60
Output power(W)
No Heatsink
200LFM
No Heatsink
400LFM
No Heatsink
1000LFM
80
Heatsink
200LFM
Heatsink
400LFM
Heatsink
1000LFM
60
40
40
20
20
0
-40
0
10
0
Ambient temperature(℃)
20
30
40
50
60
70
80
90
100
-40
0
10
20
Ambient temperature(℃)
30
40
50
60
70
80
90
100
2014.12.09-A/1
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
URF1D_QB Series
URF1D24QB-75W Thermal Curves (Vin=110V)
80
70
60
No Heatsink
Natural Convection
No Heatsink
200LFM
No Heatsink
400LFM
No Heatsink
1000LFM
URF1D24QB-75WH Thermal Curves (Vin=110V)
80
70
60
Heatsink
Natural Convection
Heatsink
200LFM
Heatsink
400LFM
Heatsink
1000LFM
Output power(W)
40
30
20
10
0
-40
0
10
20
30
40
50
60
70
80
90
100
Output power(W)
50
50
40
30
20
10
0
-40
0
10
20
30
40
50
60
70
80
90
100
Ambient temperature(℃)
Ambient temperature(℃)
URF1D24QB-50W Thermal Curves (Vin=110V)
60
50
60
URF1D24QB-50WH Thermal Curves (Vin=110V)
50
No Heatsink
Natural Convection
Heatsink
Natural Convection
Output power(W)
40
30
20
10
0
-40
0
10
20
30
40
50
60
70
80
90
100
Output power(W)
No Heatsink
200LFM
No Heatsink
400LFM
No Heatsink
1000LFM
40
Heatsink
200LFM
Heatsink
400LFM
Heatsink
1000LFM
30
20
10
0
-40
0
10
20
Ambient temperature(℃)
Ambient temperature(℃)
30
40
50
60
70
80
90
100
Sense of application and precautions
1. When Remote Sense is not used
+Vo
sens e+
Trim
sens e-
0V
+
C
Load
The le ad as s ho rt as po ss ible
Short at pin root
Notes：
1) When remote sense is not used, make sure + Vo and Sense + are shorted, and that 0V and Sense- are shorted as well;
2) Keep the patterns between + Vo and Sense + and 0V and Sense- as short as possible. Avoid a looping pattern. If noise enters the loop, the operation of the
power module will become unstable.
2. When Remote Sense is used
A s far as po s sibl e u sin g t he twis te d pair
+Vo
sens e+
Trim
sens e-
0V
+
C
Load
Notes:
1. Using remote sense with long wires may cause output voltage to become unstable. Consult us if long sensing wiring is necessary.
2. Sense patterns or wires should be as short as possible. If wires are used, use either twisted-pair or shielded wires.
3. Please Use wide PCB trace or a thick wires between the power supply module and the load, the line voltage drop should be kept less than 0.3V. Make sure
the power supply module's output voltage remains within the specified range.
4. The impedance of wires may cause the output the voltage oscillation or have a greater ripple, please do adequate assessments before using.
2014.12.09-A/1
Page 4 of 8
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
URF1D_QB Series
Design Reference
1. Ripple & noise
All the URF1D_QB-100W series have been tested according to the following recommended test circuit before leaving the factory (see Figure
1).
Copper sheet
C0
+Vin
Ctrl
+Vo
sens e+
Trim
sens e-
0V
25.4m m
2.54mm
C1
C2
C3
DC
Input
6.4mm
1uF
10 uF
22 0uF
Load
33 uF
Connect
Oscillograph Probe
(20MHz bandwidth)
-Vin
51mm
Fig. 1
2. Typical application
If don’t use our company’s EMC models, please make sure the input of at least 33uF electrolytic capacitor in parallel to suppress the
input terminal may produce surge voltage.
If it is required to further reduce input and output ripple, properly increase the input & output of additional capacitors Cin and Cout or
select capacitors of low equivalent impedance provided that the capacitance is no larger than the max. capacitive load of the
product.
Capacitive
Parameter
Output Voltage
0V
+Vin
Cin
+Vo
DC
DC
Cout(μF)
220
Cin(μF)
100
Cout
-Vin
24V
3. EMC solution-module recommended circuit
C1
C0
C1, C2
+Vo
0V
+Vin
-Vin
FUSE
FC-xxxD
+Vo
+
C0
DC/DC
CONVERTER
C2
FC-xxxD
-Vo
FUSE
Fig. 2
82uF/200V electrolytic capacitor
2200pF/400VAC capacitor
recommended to use MORNSUN’s
FC-CX3D
Due to the difference of the power
module input current, the fuse of the
recommended values, please refer to the
Technical Manual for the power module.
4. These applications are not supported for the follow models
+Vin
-Vin
FUSE
+Vo
-Vo
+Vin
-Vin
+Vo
0V
FC-xxxD
DC/DC
CONVERTER
+Vin
-Vin
FUSE
FC-xxxD
+Vo
-Vo
+Vin
-Vin
DC/DC
CONVERTER
+Vo
0V
+Vin
-Vin
FUSE
FC-xxxD
+Vo
-Vo
+Vin
-Vin
DC/DC
CONVERTER
+Vo
0V
C
2014.12.09-A/1
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