www.murata-ps.com
UCR100 Series
3U High Reliability DC-DC Converters
OBSOLETE PRODUCT
Typical unit
FEATURES
to 137.5 VDC wide input voltage range
16.8
5.1, 12 or 24VDC unipolar output up to
Fixed
120 Watts
x 4TE x 165.5mm (111 x 20.3 x 165.5 mm)
3U
cassette module for 19-inch rack mounting
Ruggedized “no fans” high reliability enclosure
with conformal coated components
Extensive self-protection, over temperature and
short circuit features
On/Off control, sense, current share, output OK
LED, UV lockout, Hold-up Cap and trim (some
functions optional)
Adjustable input undervoltage (UVLO) protection,
optional
2250VDC/1500VAC I/O isolation plus RoHS-6
compliance
Operating temperature range -40 to +85˚
Celsius
Extensive EU transportation and railway stand-
ards adherence
PRODUCT OVERVIEW
Housed in a 3U x 4TE x 165.5 mm extruded
aluminum cassette module suitable for 19-inch
rack mounting, the UCR series of isolated 100
Watt DC-DC converters provide clean DC output
power over a very wide input voltage range. The
standard input range is 16.8 to 137.5 Volts DC
with transient capability between 14.4V and 154V.
The reverse-polarity protected input is immune to
surges and transients per EN50155, IEC60571 and
RIA12 standards. The double reinforced insulation
system protects over the full power and tempera-
ture range in compliance with IEC/EN/UL60950-1
and EN50116. The UCR series is ideal for battery
and mobile distributed power applications in
transportation, industrial, vehicles, signal systems,
communications and railways.
The fixed output voltage is fully regulated with
excellent noise, ripple and transient settling char-
acteristics. Isolation characteristics are 2250 Volts
DC (1500 VAC) input to output and input to case.
The ruggedized 3U housing features conformal
coating of internal components for moisture resis-
tance. The high efficiency design requires no forced
cooling since all internal power dissipation is
routed to integral extruded aluminum chassis rails.
The enclosure may also be mounted against a cold
plate inside a sealed chassis in conduction cooling
applications. The UCR series is designed to comply
with numerous environmental, EMC/EMI and safety
standards (see specifications). Protection systems
include output overcurrent and short circuit, over
temperature shutdown (with automatic recovery)
and output overvoltage. An industry-standard DIN
H15 rear connector is used.
All models are equipped with an On/Off control,
sense inputs, and output voltage trim (±10 %).
Optional features include output OK LED lamp and
control signal, active current sharing with other UCR’s,
external capacitor for extended hold-up time, and
adjustable input undervoltage lockout.
+H-UP CAP
UVLO Trim
On/Off
28
Primary
Control
Circuitry
Secondary
Control
Circuitry
24 -Vout OK or UVLO *
18 Current Share*
16 Trim
12 +Sense
22 +Vout OK or H-UP *
Murata Power Solutions
recommends an external fuse,
F1. See page 17 for details.
F1
+Vin
30
External
DC
Power
Source
32
-Vin
Cy
26
Feedback
Circuit
4 +Vout
Input
Filter
Primary
Switches
Secondary
Synchronous
Rectifiers
Output
Filter
6 +Vout
8 -Vout
10 -Vout
Cy
20
*Please see ordering guide for optional features
14 -Sense
Isolation
Not connected
For full details go to
www.murata-ps.com/rohs
Figure 1. UCR Block Diagram
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MDC_UCR100.C02
Page 1 of 20
UCR100 Series
3U High Reliability DC-DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output
Root Model
Number
➀
UCR100-050-T72-C
UCR100-120-T72-C
UCR100-240-T72-C
➀
➁
Input
Vout
Iout
Power R/N (mV p-p) Regulation (max.) Vin nom. Range
(Volts DC) (Amps,max.) (Watts) Typ. Max. Line
Load (Volts DC) (Volts)
➂
5.1
12
24
20
10
5.5
100
120
132
20
50
100
80
75
±0.25% ±0.25%
±0.25% ±0.25%
72
72
72
16.8-137.5
16.8-137.5
16.8-137.5
Efficiency
Pwr, no Iin, full load
load (W) (Amps)
➁
Min. Typ.
3
3.5
3.5
1.61
1.99
2.11
Dimensions
Inches
mm
85.0% 87% 4.38x0.81x6.52 111x20.3x165.5
84.5% 86.5% 4.38x0.81x6.52 111x20.3x165.5
88%
90% 4.38x0.81x6.52 111x20.3x165.5
150 ±0.25% ±0.25%
➂
These are not complete model numbers. Please refer to the Part Number Structure for ordering
information of all options.
Measured at nominal line voltage and max load, +25°C ambient temperature, sense lines
connected.
This is the standard input range. The transient input range (0.1 seconds) is 14.4V to 154V.
PART NUMBER STRUCTURE
UCR 100
-
120
-
T72
-
SV
-
C
Series
Output Power
1
Nominal Output Voltage
050 = 5.1Vdc
120 = 12Vdc
240 = 24Vdc
Nominal Input Voltage Range
T72 = 16.8V-137.5Vdc
RoHS-6/6 Compliant
Option Package
Blank = Standard option (remote on/off, remote sense, I/O OK LED indicator and Vout Trim)
S = Standard option plus current sharing² and Vout OK signals
V = Standard option plus Hold-up connection³ and UVLO
SV = Standard option plus current sharing,² Hold-up and UVLO
¹Please refer to the wattage rating in the Ordering Guide section of the data sheet.
²Current sharing is not available on the 24V output models.
³External capacitor is required.
TABLE 1. OPTIONS
PART NUMBER
UCR100-050-T72-C
UCR100-050-T72-S-C
UCR100-050-T72-SV-C
UCR100-050-T72-V-C
UCR100-120-T72-C
UCR100-120-T72-S-C
UCR100-120-T72-SV-C
UCR100-120-T72-V-C
UCR100-240-T72-C
UCR100-240-T72-V-C
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
CURRENT SHARE
UVLO
HOLD-UP
Vout OK
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MDC_UCR100.C02
Page 2 of 20
UCR100 Series
3U High Reliability DC-DC Converters
FUNCTIONAL SPECIFICATIONS, UCR100-050-T72
➀
INPUT
Operating voltage range, standard
Surge and Transient Protection
Input Limits, no damage
Input Filter
Reverse Polarity Protection
Start-up threshold
Undervoltage shutdown
➁
Overvoltage shutdown
Input current/power
Full Load Current
Peak Inrush Current
Short Circuit Input Current
No Load Input Power
Low Line Input Current
Shutdown Mode Input Current
Reflected (back) ripple current
➂
GENERAL and SAFETY
Efficiency
Conditions/Comments
Per EN50155, IEC60571 and RIA12
Operating or non-operating
Per EN50155, Symmetrical combined with
VDR/transorb
Yes, in conjunction with external fuse.
50% load
50% load
Minimum
16.8
0
Typical/Nominal
72
Maximum
137.5
154
Units
Vdc
Vdc
12.8
10.5
14.6
12.3
170
1.30
40
0.05
3.0
5.89
5
5
16.4
14.0
Vdc
Vdc
Vdc
Vdc
Amps
Amps
Amps
Watts
Amps
mA
mA pk-pk
%
%
%
KHz
mS
mS
Vdc
Vdc
Vdc
Mohm
pF
1.67
0.1
3.5
7.57
10
10
Iout = minimum
Vin = minimum
Vin = nom., 16A load
Vin = 110V, 16A load
Vin = 24V, 16A load
Vin on to Vout regulated
Remote ON to Vout regulated
Input to output, case and aux. test
Case to output and Aux. test voltage
Based on 250 VAC or 240 VDC I/O
Switching Frequency
Turn-On Time
Isolation Voltage
Isolation Voltage
Subassemblies pre-tested per EN50116/60950
Isolation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety (Designed to meet the following
requirements)
Calculated MTBF
85
85
81
90
87
86.5
82.5
100
150
150
110
160
160
2250
2250
4200
Double/Reinforced
100
4000
UL-60950-1, (2nd Edition), CSA-C22.2
No.60950-1, IEC/EN60950-1
per MIL-HDBK-217F
Ground benign, Tcase = 40˚C
Ground benign, Tcase = 40/70˚C
Ground benign, Tcase = 50˚C
Full temperature range
Vout = nominal
50% load
magnetic feedback
0.0
5.049
5.9
-10
0.0
24
Yes
TBC
TBC
TBC
81.6
5.1
±1
6.2
103.02
5.151
6.5
10
20
28.70
1
Hours
Hours
Hours
Watts
Vdc
% of Vnom.
Vdc
% of Vnom.
Amps
Amps
Amps
OUTPUT
Total Output Power
Voltage
Output Voltage Range
Setting Accuracy
Overvoltage Protection
Vout Adjustment Range <optional>
Current
Output Current Range
Current Limit Inception
Short Circuit Current
Short Circuit Duration
Short circuit protection method
Line Regulation
Load Regulation
Dynamic Load Response
Ripple and Noise, 1 & 10 μF output
Temperature Coefficient
Maximum Output Capacitance
Vin = 16.8-137.5V.
98% of Vnom., after warmup
Hiccup technique, autorecovery within ±1%
of Vout
Output shorted to ground
Current limiting, hiccup autorestart
Vin = min. to max.
Vout = nom.
Iout = min. to max.
50-75-50% load step
settling time to within ±1% of Vout
Peak deviation
5 Hz- 20 MHz BW
At all outputs
ESR 0.02Ω min., resistive load
➁
➂
➃
➄
16
26.35
0.5
Continuous
±0.25
±0.25
150
±250
80
6600
Undervoltage shutdown is also available as a user-adjustable option.
Back ripple current input filter is Cin=33μF, Cbus=220μF, Lbus=12μH
Remove overload for recovery
Output may be shorted to ground with no damage.
% of Vnom.
% of Vnom.
μSec
mV
mV pk-pk
% of Vnom./°C
μF
75
±200
20
±0.02
Notes
➀
Unless otherwise noted, units are specified with 1μF ceramic and 10μF tantalum
external output capacitors in parallel (low ESR). The external input capacitor is 33μF,
low ESR.
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MDC_UCR100.C02
Page 3 of 20
UCR100 Series
3U High Reliability DC-DC Converters
FUNCTIONAL SPECIFICATIONS, UCR100-120-T72
➀
INPUT
Operating voltage range, standard
Surge and Transient Protection
Input Limits, no damage
Input Filter
Reverse Polarity Protection
Start-up threshold
Undervoltage shutdown
➁
Overvoltage shutdown
Input current/power
Full Load Current
Peak Inrush Current
Short Circuit Input Current
No Load Input Power
Low Line Input Current
Shutdown Mode Input Current
Reflected (back) ripple current
➂
GENERAL and SAFETY
Efficiency
Conditions/Comments
Per EN50155, IEC60571 and RIA12
Operating or non-operating
Per EN50155, Symmetrical combined with
VDR/transorb
Yes, in conjunction with external fuse
50% load
50% load
Minimum
16.8
0
Typical/Nominal
72
Maximum
137.5
154
Units
Vdc
Vdc
11.5
10.3
15.0
12
170
1.54
40
0.05
3.5
7.05
5
5
16.3
14.8
Vdc
Vdc
Vdc
Vdc
Amps
Amps
Amps
Watts
Amps
mA
mA pk-pk
%
%
%
KHz
mS
mS
Vdc
Vdc
Vdc
Mohm
pF
1.99
0.1
4.5
9.37
10
10
Iout = minimum
Vin = minimum
Vin = nom., 8A load
Vin = 110V, 8A load
Vin = 24V, 8A load
Vin on to Vout regulated
Remote ON to Vout regulated
Input to output, case and aux. test
Case to output and Aux. test voltage
Based on 250 VAC or 240 VDC I/O
Switching Frequency
Turn-On Time
Isolation Voltage
Isolation Voltage
Subassemblies pre-tested per EN50116/60950
Isolation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety (Designed to meet the following
requirements)
Calculated MTBF
84.5
86
77
90
86.5
87.5
81
100
150
150
110
160
160
2250
2250
4200
Double/Reinforced
100
4000
UL-60950-1, (2nd Edition), CSA-C22.2
No.60950-1, IEC/EN60950-1
per MIL-HDBK-217F
Ground benign, Tcase = 40˚C
Ground benign, Tcase = 40/70˚C
Ground benign, Tcase = 50˚C
Full temperature range
Vout = nominal
50% load
magnetic feedback
0.0
11.88
13.5
-10
0.0
14
Yes
TBC
TBC
TBC
96
12.0
±1
14.4
121.2
12.12
15
10
10.0
18
1
Hours
Hours
Hours
Watts
Vdc
% of Vnom.
Vdc
% of Vnom.
Amps
Amps
Amps
Vin = 16.8-137.5V.
98% of Vnom., after warmup
Hiccup technique, autorecovery within ±1%
Short Circuit Current
of Vout
Short Circuit Duration
Output shorted to ground
Short circuit protection method
Current limiting, hiccup autorestart
Line Regulation
Vin = min. to max.
Vout = nom.
Load Regulation
Iout = min. to max.
Dynamic Load Response
50-75-50% load step
settling time to within ±1% of Vout
Peak deviation
Ripple and Noise, 1 & 10 μF output capacitors
5 Hz- 20 MHz BW
Temperature Coefficient
At all outputs
Maximum Output Capacitance
ESR 0.02Ω min., resistive load
Notes
➀
Unless otherwise noted, units are specified with 1μF ceramic and 10μF tantalum
external output capacitors in parallel (low ESR). The external input capacitor is 33μF,
low ESR.
➁
➂
➃
➄
OUTPUT
Total Output Power
Voltage
Output Voltage Range
Setting Accuracy
Overvoltage Protection
Vout Adjustment Range <optional>
Current
Output Current Range
Current Limit Inception
8.0
16
0.5
Continuous
±0.25
±0.25
200
±250
75
3300
Undervoltage shutdown is also available as a user-adjustable option.
Back ripple current input filter is Cin=33μF, Cbus=220μF, Lbus=12μH
Remove overload for recovery
Output may be shorted to ground with no damage.
% of Vnom.
% of Vnom.
μSec
mV
mV pk-pk
% of Vnom./°C
μF
100
±200
50
±0.02
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MDC_UCR100.C02
Page 4 of 20
UCR100 Series
3U High Reliability DC-DC Converters
FUNCTIONAL SPECIFICATIONS, UCR100-240-T72
➀
INPUT
Operating voltage range, standard
Surge and Transient Protection
Input Limits, no damage
Input Filter
Reverse Polarity Protection
Start-up threshold
Undervoltage shutdown
➁
Overvoltage shutdown
Input current/power
Full Load Current
Peak Inrush Current
Short Circuit Input Current
No Load Input Power
Low Line Input Current
Shutdown Mode Input Current
Reflected (back) ripple current
➂
GENERAL and SAFETY
Efficiency
Conditions/Comments
Per EN50155, IEC60571 and RIA12
Operating or non-operating
Per EN50155, Symmetrical combined with
VDR/transorb
Supplied standard
50% load
50% load
Minimum
16.8
0
Typical/Nominal
72
Maximum
137.5
154
Units
Vdc
Vdc
11.5
10.5
Yes
13.9
12.7
170
1.63
40
0.25
3.5
7.76
5
5
16.3
14.8
Vdc
Vdc
Vdc
Vdc
Amps
Amps
Amps
Watts
Amps
mA
mA pk-pk
%
%
%
KHz
mS
mS
Vdc
Vdc
Vdc
Mohm
pF
2.11
0.35
4.5
10.09
10
10
Iout = minimum
Vin = minimum
Vin = nom., 4.4A load
Vin = 110V, 4.4A load
Vin = 24V, 4.4A load
Vin on to Vout regulated
Remote ON to Vout regulated
Input to output, case and aux. test
Case to output and Aux. test voltage
Based on 250 VAC or 240 VDC I/O
Switching Frequency
Turn-On Time
Isolation Voltage
Isolation Voltage
Subassemblies pre-tested per EN50116/60950
Isolation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety (Designed to meet the following
requirements)
Calculated MTBF
88
86.5
79
90
90
88.5
81
100
150
150
110
160
160
2250
2250
4200
Double/Reinforced
100
4000
UL-60950-1, (2nd Edition), CSA-C22.2
No.60950-1, IEC/EN60950-1
per MIL-HDBK-217F
Ground benign, Tcase = 40˚C
Ground benign, Tcase = 40/70˚C
Ground benign, Tcase = 50˚C
Full temperature range
Vout = nominal
50% load
magnetic feedback
0.0
23.64
27
-10
0.0
6.5
Yes
TBC
TBC
TBC
105.6
24.0
±1.5
28.5
133.98
24.36
30
10
5.5
9.5
1
Hours
Hours
Hours
Watts
Vdc
% of Vnom.
Vdc
% of Vnom.
Amps
Amps
Amps
OUTPUT
Total Output Power
Voltage
Output Voltage Range
Setting Accuracy
Overvoltage Protection
Vout Adjustment Range <optional>
Current
Output Current Range
Current Limit Inception
Short Circuit Current
Short Circuit Duration
Short circuit protection method
Line Regulation
Load Regulation
Dynamic Load Response
Ripple and Noise, 1 & 10 μF output
Temperature Coefficient
Maximum Output Capacitance
Vin = 16.8-137.5V.
98% of Vnom., after warmup
Hiccup technique, autorecovery within ±1%
of Vout
Output shorted to ground
Current limiting, hiccup autorestart
Vin = min. to max.
Vout = nom.
Iout = min. to max.
50-75-50% load step
settling time to within ±1% of Vout
Peak deviation
5 Hz- 20 MHz BW
At all outputs
ESR 0.02Ω min., resistive load
➁
➂
➃
➄
4.4
7.75
0.5
Continuous
±0.25
±0.25
200
±250
150
1200
Undervoltage shutdown is also available as a user-adjustable option.
Back ripple current input filter is Cin=33μF, Cbus=220μF, Lbus=12μH
Remove overload for recovery
Output may be shorted to ground with no damage.
% of Vnom.
% of Vnom.
μSec
mV
mV pk-pk
% of Vnom./°C
μF
100
±200
100
±0.02
Notes
➀
Unless otherwise noted, units are specified with 1μF ceramic and 10μF tantalum
external output capacitors in parallel (low ESR). The external input capacitor is 33μF,
low ESR.
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MDC_UCR100.C02
Page 5 of 20
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