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UWE Series
Wide Input, Isolated
Eighth-Brick DC-DC Converters
T
The UWE Series "Eighth-Brick" DC-DC Converters are high-current isolated
power modules designed for use in high-density system boards.
Typical unit
FEATURES
Industry-standard through-hole eighth-brick
package with 0.9" x 2.3" x 0.38" outline
dimensions
Choice of two wide input ranges, 9-36 Vdc or
18-75 Vdc
output from 3.3 to 24 Volts DC up to 75
Fixed
Watts
Synchronous rectification yields very high
efficiency and low power dissipation
Operating temperature range from -40 to
+85˚C with derating
to 2250 Volt DC isolation (Q48 models)
Up
Outstanding thermal performance and derating
Extensive self-protection, overtemperature
and overload features with no output reverse
conduction
On/Off control, trim and remote sense functions
ed to UL/EN/IEC 60950-1, CAN/CSA-C22.2
Certifi
No. 60950-1, 2nd Edition, safety approvals
and EN55022/CISPR22 standards
Pre-bias operation for startup protection
PRODUCT OVERVIEW
With dimensions of only 0.9 by 2.3 by 0.38
inches, the UWE series open frame DC-DC convert-
ers deliver up to 75 Watts in an industry-standard
“eighth-brick” through-hole package. This format
can plug directly into quarter-brick pinouts. Several
standard fixed-output voltages from 3.3 Vdc to 24
Vdc assure compatibility in embedded equipment,
CPU cards and instrument subsystems. The extend-
ed 4-to-1 input power range (9-36V) is ideal for
battery-powered, telecom or portable applications.
Very high efficiency means no fans or temperature
deratings in many applications. An optional thermal
mounting baseplate extends operation into most
conceivable environments.
The synchronous rectifier design uses the
maximum available duty cycle for greatest ef-
ficiency and low power dissipation with no reverse
output conduction. Other features include low
on-resistance FET’s, planar magnetics and heavy-
copper PC boards. These deliver low output noise,
tight line/load regulation, stable no-load operation
and fast load step response. All units are precision
assembled in a highly automated facility with ISO-
traceable manufacturing quality standards.
Isolation of 2250 Volts (Q48 models) assures
safety and fully differential (floating) operation for
greatest application flexibility. On-board Sense in-
puts compensate for line drop errors at high output
currents. Outputs are trimmable within ±10% of
nominal voltage. The UWE series are functionally
complete.
A wealth of protection features prevents damage
to both the converter and outside circuits. Inputs
are protected from undervoltage and outputs fea-
ture short circuit protection, overcurrent and excess
temperature shut down. Overloads automatically
recover using the “hiccup” technique upon fault
removal. The UWE is certified to standard safety
and EMI/RFI approvals. All units meet RoHS-6
hazardous materials compliance.
+V
IN
SWITCH
DRIVE
+V
OUT
VOLTAGE
REGULATOR
+SENSE
SS
–V
IN
PWM
−V
OUT
−SENSE
ON/OFF
CONTROL
ISOLATION
REFERENCE
AMPLIFIER,
TRIM AND FEEDBACK
TRIM
UV, OT
Typical topology is shown.
Figure 1. Simplified Block Diagram
For full details go to
www.murata-ps.com/rohs
Q48 models only
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MDC_UWE Series.E04
Page 1 of 23
UWE Series
Wide Input, Isolated
Eighth-Brick DC-DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output
V
OUT
(V)
3.3
3.3
5.0
5.0
12.0
12.0
15.0
15.0
24.0
Input
Regulation (max.)
Line
±0.25%
±0.2%
±0.25%
±0.2%
±0.125%
±0.1%
±0.125%
±0.125%
±0.125%
Load
±0.25%
±0.25%
±0.125%
±0.15%
±0.05%
±0.075%
±0.075%
±0.125%
±0.125%
Efficiency
Root Model
UWE-3.3/20-Q12
UWE-3.3/20-Q48
UWE-5/15-Q12
UWE-5/15-Q48
UWE-12/6-Q12
UWE-12/6-Q48
UWE-15/5-Q12
UWE-15/5-Q48
UWE-24/3-Q12
I
OUT
(A)
20
20
15
15
6
6
5
5
3
Power
(W)
66
66
75
75
72
72
75
75
72
R/N (mVp-p)
➂
Typ.
80
165
80
135
120
115
65
90
190
Max.
125
225
125
150
180
150
125
150
275
V
IN
Nom. Range
(V)
(V)
12
48
12
48
12
48
12
48
12
9-36
18-75
9-36
18-75
9-36
18-75
9-36
18-75
9-36
I
IN
, no
load
(mA)
160
75
185
90
200
90
270
90
110
I
IN
, full
load
(A)
6.18
1.54
6.87
1.74
6.56
1.65
6.83
1.73
6.70
Min.
87%
88%
89%
88.5%
90%
89%
89.5%
89%
88.3%
Typ.
89%
89.5%
91%
90%
91.5%
91%
91.5%
90.5%
89.5%
Package
(Case, Pinout)
C77, P32
Please refer to the part number structure for additonal ordering model numbers and options.
All specifications are at nominal line voltage, nominal output voltage and full load, +25° C.
unless otherwise noted. See detailed specifications.
I/O caps are necessary for our test equipment and may not be needed for your application.
Load regulation range: 0.1-3A. This is required only for our test equipment. The converter will
operate at zero output current with degraded regulation.
Output capacitors are 1 μF ceramic in parallel with 10 μF electrolytic. Input cap is 100 μF. All
caps are low ESR types. Contact Murata Power Solutions for details.
PART NUMBER STRUCTURE
U W E
-
12
/
6
-
Q12 P B H LX
-
C
Unipolar, Single-Output
Wide Input Range
RoHS Hazardous Materials Compliance
C=RoHS-6, standard (does not claim EU RoHS exemption 7b–lead in solder)
Pin Length Option
Blank = Standard pin length 0.19 inches (4.8mm)
L1 = Pin length 0.110 inches (2.79mm)*
L2 = Pin length 0.145 inches (3.68mm)*
Conformal Coating Option
*Special quantity order is required;
Blank = No coating, standard
no sample quantities available.
H = Coating added, optional*
(built to order; contact Murata Power Solutions for MOQ and lead times.)
Baseplate (optional)
Blank = No baseplate (standard)
B = Baseplate installed (optional special order)
Note:
Some model number combinations
may not be available. Please contact
Murata Power Solutions.
Eighth-Brick Package
Nominal Output Voltage
Maximum Rated Output
Current in Amps
Input Voltage Range
Q12 = 9-36 Volts
Q48 = 18-75 Volts
On/Off Control Logic
P = Positive logic (standard for Q12 models, optional for Q48 models)
N = Negative logic (standard for Q48 models, optional special order for Q12 models)
Special Customer Configuration part numbers:
1) UWE-12/6-Q48NB-C-CIS
2) UWE-12/6-Q48NBL1-C-CIS
3) UWE-15/5-Q12P-31318-C (tested to 2500Vdc isolation; all other
standard product specifications plus conformal coating apply.)
4) UWE-12/6-Q48NBHL1-C-CIS
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MDC_UWE Series.E04
Page 2 of 23
UWE Series
Wide Input, Isolated
Eighth-Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS, Q12 MODELS
UWE-3.3/20-Q12
Specs are typical unless noted.
INPUT
Input voltage range
Start-up threshold, Volts
Undervoltage shutdown, V.
Overvoltage shutdown, V.
Reflected (back) ripple current, mA pk-pk
②
Suggested external fast blow fuse, A
Input current
Full load conditions
Inrush transient, A sec
Input current if output is in short circuit, mA
No load, mA
Low line (Vin=min.), Amps
Standby mode, mA
(Off, UV, OT shutdown)
Internal input filter type
Reverse polarity protection
Remote On/Off control
Positive logic ("P" model suffix)
Negative logic ("N" model suffix)
Current, mA
OUTPUT
Voltage output range
Voltage output accuracy
Adjustment range
Temperature coefficient
Minimum loading
Remote sense compensation
Ripple/noise (20 MHz bandwidth)
Line/Load regulation
Efficiency
Maximum capacitive loading, μF
low ESR, resistive load
Isolation voltage
Input to Output, Volts min. DC
Input to baseplate, Volts min. DC
Baseplate to output, Volts min. DC
Isolation resistance, MΩ
Isolation capacitance, pF
Isolation safety rating
Current limit inception (98% of
Vout, after warmup), Amps
Short circuit protection method
Short circuit current, Amps
Short circuit duration
Overvoltage protection, Volts
(via magnetic feedback)
1500
1000
See ordering guide
±1% of Vnom., (50% load)
-10 to +10% of Vnom.
±0.02% of Vout range per °C
No minimum load
+10% max.
See ordering guide
See ordering guide
See ordering guide
10,000
10,000
4,700
4700
1500
OFF=Ground pin to +0.8V max.
ON=open pin or +3.5 to +15V max.
OFF=open pin or +5V to +15V max.
ON=Ground pin or 0 to +0.8V max.
1
250
160
8.33
8
200
185
9.42
5
2
UWE-5/15-Q12
UWE-12/6-Q12
UWE-15/5-Q12
UWE-24/3-Q12
18
See ordering guide
9.5
8.5
25
25
8
10
20
8
none
40
20
See ordering guide
0.1 A
2
sec
250
200
8.89
5
L-C
None, install external fuse
250
270
9.36
5
250
110
9.04
5
1
20
40
20
9
8.2
8
1500
1500
750
100
1000
Basic insulation
27
22.5
8.5
7.25
4.0
1000
1000
Current limiting, hiccup autorestart. Remove overload for recovery.
0.5
1.0
1.5
Continuous, output shorted to ground. No damage.
4.5
6
15
18
29
1.5
1.0
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MDC_UWE Series.E04
Page 3 of 23
UWE Series
Wide Input, Isolated
Eighth-Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS, Q12 MODELS, CONTINUED
DYNAMIC CHARACTERISTICS
Dynamic load response, μSec
(50-75-50% load step) to ±1%
of final value
Start-up time
Vin to Vout regulated, mSec
Remote On/Off to Vout regulated, mSec
Switching frequency, KHz
ENVIRONMENTAL
Operating temperature range, no baseplate
with derating, °C (see Derating curves)
Storage temperature range, °C
Maximum baseplate operating temperature, °C
Thermal protection/shutdown, °C
Relative humidity
PHYSICAL
Outline dimensions
Pin material
Pin Finish
Pin diameter, inches
Pin diameter, mm
Weight, ounces
Weight, grams
Electromagnetic interference (conducted)
Safety
FUNCTIONAL SPECIFICATIONS, Q48 MODELS
UWE-3.3/20-Q48
Specs are typical unless noted.
INPUT
Input voltage range
Start-up threshold, Volts
Undervoltage shutdown, V. (@ ½ load)
Overvoltage shutdown, V.
Reflected (back) ripple current, mA pk-pk
Suggested external fast blow fuse, A
Input current
Full load conditions
Inrush transient, A
2
sec
Input current if output is in short circuit, mA
No load, mA
Low line (Vin=min.), Amps
Standby mode, mA
(Off, UV, OT shutdown)
Internal input filter type
Reverse polarity protection
Remote On/Off control
Positive logic ("P" model suffix)
Negative logic ("N" model suffix)
Current, mA
OFF = Ground pin to +0.8V max.
ON = Open pin or +3.5V to +15V max.
OFF = Open pin or +5V to +15V max.
ON = Ground pin to +1V max.
1
0.1 A
2
sec
150
75
4.1
4
Pi-type
0.1 A
2
sec
250
90
4.6
5
L-C
None, install external fuse
0.1 A
2
sec
100
90
4.35
4
Pi-type
0.1 A
2
sec
250
90
4.71
5
L-C
30
8
30
10
17.5
16.5
17.5
16.0
none
40
10
40
20
See ordering guide
17.5
16.0
17.5
16.0
UWE-5/15-Q48
UWE-12/6-Q48
UWE-15/5-Q48
See mechanical specs
Copper alloy
Nickel underplate with gold overplate (see mechanical specs for details)
0.04/0.062
1.016/1.575
0.7
20
Meets EN55022 and CISPR22 class B with external filter.
Meets UL/cUL 60950-1, CSA-C22.2 No.60950-1, IEC/EN 60950-1
20
5
245±25
20
15
215-250
40
30
275 ±25
30
25
275 ±25
40
30
215 ±15
UWE-3.3/20-Q12
UWE-5/15-Q12
UWE-12/6-Q12
50
UWE-15/5-Q12
UWE-24/3-Q12
-40 to +85 with derating
-55 to +125
+100
+120
to +85°C/85% non-condensing
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MDC_UWE Series.E04
Page 4 of 23
UWE Series
Wide Input, Isolated
Eighth-Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS, Q48 MODELS, CONTINUED
OUTPUT
Voltage output range
Voltage output accuracy
Adjustment range
Temperature coefficient
Minimum loading
Remote sense compensation
Ripple/noise (20 MHz bandwidth)
Line/Load regulation
Efficiency
Maximum capacitive loading, μF
low ESR <0.02Ω max., resistive load
Isolation voltage
Input to Output, Volts min. DC
Input to baseplate, Volts min. DC
Baseplate to output, Volts min. DC
Isolation resistance, MΩ
Isolation capacitance, pF
Isolation safety rating
Current limit inception (98% of
Vout, after warmup), Amps
Short circuit protection method
Short circuit current, Amps
Short circuit duration
Overvoltage protection, Volts
(via magnetic feedback)
DYNAMIC CHARACTERISTICS
Dynamic load response, μSec
(50-75-50% load step) to final value
Start-up time
Vin to Vout regulated, mSec
Remote On/Off to Vout regulated, mSec
Switching frequency, KHz
ENVIRONMENTAL
Operating temperature range, no baseplate
with derating, °C (see Derating curves)
Storage temperature range, °C
Maximum baseplate operating temperature, °C
Thermal protection/shutdown, °C
Relative humidity
PHYSICAL
Outline dimensions
Pin material
Pin Finish
Pin diameter, inches
Pin diameter, mm
Weight, ounces
Weight, grams
Electromagnetic interference (conducted)
Safety
See mechanical specs
Copper alloy
Nickel underplate with gold overplate (see mechanical specs for details)
0.04/0.062
1.016/1.575
0.7
20
Meets EN55022 and CISPR22 class B with external filter.
Certified to UL/cUL 60950-1, CSA-C22.2 No.60950-1, IEC/EN 60950-1, 2nd Edition
+100
+120
+105
+120
20
10
215±20
20
20
240±20
30
20
220±20
30
25
225±25
50 (to ± 2%)
50 (to ± 2%)
50 (to ± 1%)
50 (to ± 1%)
4
1000
1500
Basic insulation
26.5
21.0
8.0
7.05
UWE-3.3/20-Q48
UWE-5/15-Q48
UWE-12/6-Q48
UWE-15/5-Q48
See ordering guide
±1% of Vnom., (50% load)
-10 to +10% of Vnom.
±0.02% of Vout range per °C
No minimum load
+10% max.
See ordering guide
See ordering guide
See ordering guide
4,700
10,000
4,700
3300
2250
1500
750
100
1000
1000
Current limiting, hiccup autorestart. Remove overload for recovery.
5.0
1.5
1.0
1.5
Continuous, output shorted to ground. No damage.
6.5
15
18
-40 to +85 with derating
-55 to +125
+100
+120
+105
+120
to +85°C/85% non-condensing
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MDC_UWE Series.E04
Page 5 of 23
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