UWE Series
www.murata-ps.com
Wide Input, Isolated
Eighth-Brick DC-DC Converters
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
PRODUCT OVERVIEW
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
Fixed output from 3.3 to 24 Volts DC up to 75
Watts
Synchronous rectification yields very high efficiency and low power dissipation
Operating temperature range from -40 to +85˚C
with derating
With dimensions of only 0.9 by 2.3 by 0.38 inches,
the UWE series open frame DC-DC converters deliver
up to 75 Watts in an industry-standard “eighthbrick” 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 extended 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 efficiency
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
Up to 2250 Volt DC isolation (Q48 models)
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
Certified to UL/IEC 60950-1, UL 62368-1 /CSAC22.2 No. 60950-1, 2nd Edition, safety
approvals and EN55022/CISPR22 standards
Pre-bias operation for startup protection
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 inputs
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 feature
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.
+VOUT
+VIN
SWITCH
DRIVE
VOLTAGE
REGULATOR
–VIN
SS
+SENSE
−VOUT
PWM
−SENSE
ON/OFF
CONTROL
ISOLATION
UV, OT
REFERENCE
AMPLIFIER,
TRIM AND FEEDBACK
TRIM
Typical topology is shown.
Figure 1. Simplified Block Diagram
For full details go to
www.murata-ps.com/rohs
Q48 models only
Q48 models only
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MDC_UWE Series.E08 Page 1 of 24
UWE Series
Wide Input, Isolated
Eighth-Brick DC-DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output
Root Model
Iout
(A)
Vout
(V)
Power
(W)
Input
R/N (mVp-p)
Typ.
Regulation (max.)
Max.
Line
Load
Vin Nom. Range
(V)
(V)
Efficiency
Iin, no
load
(mA)
Iin, full
load
(A)
Min.
Typ.
UWE-3.3/20-Q12
3.3
20
66
80
125
±0.25%
±0.25%
12
9-36
160
6.18
87%
89%
UWE-3.3/20-Q48
3.3
20
66
165
225
±0.2%
±0.25%
48
18-75
75
1.54
88%
89.5%
UWE-5/15-Q12
5.0
15
75
80
125
±0.25%
±0.125%
12
9-36
185
6.87
89%
91%
UWE-5/15-Q48
5.0
15
75
135
150
±0.2%
±0.15%
48
18-75
90
1.74
88.5%
90%
UWE-12/6-Q12
12.0
6
72
120
180
±0.125%
±0.05%
12
9-36
200
6.56
90%
91.5%
UWE-12/6-Q48
12.0
6
72
115
150
±0.1%
±0.075%
48
18-75
90
1.65
89%
91%
UWE-15/5-Q12
15.0
5
75
65
125
±0.125%
±0.075%
12
9-36
270
6.83
89.5%
91.5%
UWE-15/5-Q48
15.0
5
75
90
150
±0.125%
±0.125%
48
18-75
90
1.73
89%
90.5%
UWE-24/3-Q12
24.0
3
72
190
275
±0.125%
±0.125%
12
9-36
110
6.70
88.3%
89.5%
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.
Output capacitors are 1 µF ceramic in parallel with 10 µF electrolytic. Input cap is 100 µF. All caps
Package
(Case, Pinout)
C77, P32
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.
are low ESR types. Contact Murata Power Solutions for details.
PART NUMBER STRUCTURE
U W E - 12 / 6 - Q12 P B H LX - C
Refer to the last page for model specific availability
RoHS Hazardous Materials Compliance
C=RoHS-6, standard (does not claim EU RoHS exemption 7b–lead in solder)
Unipolar, Single-Output
Pin Length Option
Wide Input Range
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)*
Eighth-Brick Package
Nominal Output Voltage
Maximum Rated Output
Current in Amps
Input Voltage Range
Q12 = 9-36 Volts
Q48 = 18-75 Volts
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.
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)
NOTE: Please click here to view the Product Status on Page 24.
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MDC_UWE Series.E08 Page 2 of 24
UWE Series
Wide Input, Isolated
Eighth-Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS, Q12 MODELS
UWE-3.3/20-Q12
UWE-5/15-Q12
UWE-12/6-Q12
UWE-15/5-Q12
UWE-24/3-Q12
8.2
8
18
Specs are typical unless noted.
INPUT
Input voltage range
See ordering guide
Start-up threshold, Volts
9.5
Undervoltage shutdown, V.
8.5
9
8
8
Overvoltage shutdown, V.
none
Reflected (back) ripple current, mA pk-pk
25
10
40
1
40
Suggested external fast blow fuse, A
25
20
20
20
20
250
Input current
Full load conditions
See ordering guide
Inrush transient, A2sec
0.1 A2sec
Input current if output is in short circuit, mA
250
200
250
250
No load, mA
160
185
200
270
110
Low line (Vin=min.), Amps
8.33
9.42
8.89
9.36
9.04
8
5
5
5
5
4700
1500
1000
1000
7.25
4.0
Standby mode, mA
(Off, UV, OT shutdown)
Internal input filter type
Reverse polarity protection
L-C
None, install external fuse
Remote On/Off control
OFF=Ground pin to +0.8V max.
Positive logic ("P" model suffix)
ON=open pin or +3.5 to +15V max.
OFF=open pin or +5V to +15V max.
Negative logic ("N" model suffix)
ON=Ground pin or 0 to +0.8V max.
Current, mA
1
OUTPUT
Voltage output range
See ordering guide
Voltage output accuracy
±1% of Vnom., (50% load)
Adjustment range
-10 to +10% of Vnom.
Temperature coefficient
±0.02% of Vout range per °C
Minimum loading
No minimum load
Remote sense compensation
+10% max.
Ripple/noise (20 MHz bandwidth)
See ordering guide
Line/Load regulation
See ordering guide
Efficiency
Maximum capacitive loading, μF
low ESR, resistive load
Isolation voltage
See ordering guide
10,000
10,000
4,700
Input to Output, Volts min. DC
1500
Input to baseplate, Volts min. DC
1500
Baseplate to output, Volts min. DC
750
Isolation resistance, MΩ
Isolation capacitance, pF
100
1500
Isolation safety rating
Current limit inception (98% of
Vout, after warmup), Amps
Short circuit protection method
27
Short circuit current, Amps
0.5
Short circuit duration
Overvoltage protection, Volts
(via magnetic feedback)
1000
1000
Basic insulation
22.5
8.5
Current limiting, hiccup autorestart. Remove overload for recovery.
1.0
1.5
1.5
1.0
18
29
Continuous, output shorted to ground. No damage.
4.5
6
15
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MDC_UWE Series.E08 Page 3 of 24
UWE Series
Wide Input, Isolated
Eighth-Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS, Q12 MODELS, CONTINUED
DYNAMIC CHARACTERISTICS
UWE-3.3/20-Q12
UWE-5/15-Q12
UWE-12/6-Q12
Dynamic load response, μSec
(50-75-50% load step) to ±1%
of final value
UWE-15/5-Q12
UWE-24/3-Q12
40
50
Start-up time
Vin to Vout regulated, mSec
20
20
40
30
Remote On/Off to Vout regulated, mSec
5
15
30
25
30
245±25
215-250
275 ±25
275 ±25
215 ±15
Switching frequency, KHz
ENVIRONMENTAL
Operating temperature range, no baseplate
with derating, °C (see Derating curves)
Storage temperature range, °C
-40 to +85 with derating
-55 to +125
Maximum baseplate operating temperature, °C
+100
Thermal protection/shutdown, °C
+120
Relative humidity
to +85°C/85% non-condensing
PHYSICAL
Outline dimensions
See mechanical specs
Pin material
Copper alloy
Pin Finish
Nickel underplate with gold overplate (see mechanical specs for details)
Pin diameter, inches
0.04/0.062
Pin diameter, mm
1.016/1.575
Weight, ounces
0.7
Weight, grams
20
Electromagnetic interference (conducted)
Meets EN55022 and CISPR22 class B with external filter.
Safety
Meets UL/cUL 60950-1, UL 62368; CSA-C22.2 No.60950-1, IEC60950-1
FUNCTIONAL SPECIFICATIONS, Q48 MODELS
UWE-3.3/20-Q48
UWE-5/15-Q48
UWE-12/6-Q48
UWE-15/5-Q48
Start-up threshold, Volts
17.5
17.5
Undervoltage shutdown, V. (@ ½ load)
16.5
17.5
17.5
16.0
16.0
16.0
Specs are typical unless noted.
INPUT
Input voltage range
See ordering guide
Overvoltage shutdown, V.
none
Reflected (back) ripple current, mA pk-pk
30
30
40
40
Suggested external fast blow fuse, A
8
10
10
20
Input current
Full load conditions
Inrush transient, A2sec
0.1 A2sec
0.1 A2sec
0.1 A2sec
0.1 A2sec
Input current if output is in short circuit, mA
150
250
100
250
No load, mA
75
90
90
90
Low line (Vin=min.), Amps
4.1
4.6
4.35
4.71
Standby mode, mA
(Off, UV, OT shutdown)
Internal input filter type
Reverse polarity protection
4
5
4
5
Pi-type
L-C
Pi-type
L-C
None, install external fuse
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
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MDC_UWE Series.E08 Page 4 of 24
UWE Series
Wide Input, Isolated
Eighth-Brick DC-DC Converters
FUNCTIONAL SPECIFICATIONS, Q48 MODELS, CONTINUED
OUTPUT
UWE-3.3/20-Q48
UWE-5/15-Q48
Voltage output range
UWE-12/6-Q48
Voltage output accuracy
±1% of Vnom., (50% load)
Adjustment range
-10 to +10% of Vnom.
Temperature coefficient
±0.02% of Vout range per °C
Minimum loading
No minimum load
Remote sense compensation
+10% max.
Ripple/noise (20 MHz bandwidth)
See ordering guide
Line/Load regulation
See ordering guide
Efficiency
Maximum capacitive loading, μF
low ESR