www.murata-ps.com
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
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 1500 Volts assures safety and fully
differential (floating) operation for greatest applica-
tion 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 fea-
ture short circuit protection, overcurrent and excess
temperature shut down. Overloads automatically
recover using the “hiccup” technique upon fault
removal. The UWE is designed to meet all standard
safety and EMI/RFI certifications. All units meet
RoHS-6 (no lead) hazardous materials compliance.
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
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
Up to 1500 Volt DC isolation (basic insulation)
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
Meets UL/EN/IEC 60950-1, CAN/CSA-C22.2
No. 60950-1 safety approvals and FCC RFI/
EMI certification
Pre-bias operation for startup protection
+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.
Simplified Block Diagram
For full details go to
www.murata-ps.com/rohs
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Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UWE Series.A17
Page 1 of 20
UWE Series
Wide Input, Isolated
Eighth-Brick DC/DC Converters
SPECIFICATION SUMMARY AND ORDERING GUIDE
c
Output
V
OUT
(V)
3.3
3.3
5.0
5.0
12.0
12.0
15.0
24.0
Input
Regulation (max.)
Line
±0.25%
±0.2%
±0.25%
Load
±0.25%
±0.25%
±0.125%
Efficiency
Root Model
c
UWE-3.3/20-Q12P-C
UWE-3.3/20-Q48N-C
UWE-5/15-Q12P-C
UWE-5/15-Q48N-C
UWE-12/6-Q12P-C
UWE-12/6-Q48N-C
UWE-15/5-Q12P-C
UWE-24/3-Q12P-C
g
I
OUT
(A)
20
20
15
15
6
6
5
3
Power
(W)
66
66
75
75
72
72
75
72
R/N (mVp-p)
➂
Typ.
80
165
80
Max.
125
225
125
V
IN
Nom. Range
(V)
(V)
12
48
12
9-36
18-75
9-36
I
IN
, no
load
(mA)
160
75
185
I
IN
, full
load
(A)
6.18
1.54
6.87
Min.
87%
88%
89%
Typ.
89%
89.5%
91%
Package
(Case, Pinout)
Please contact Murata Power Solutions for further information.
120
115
65
190
180
150
125
275
±0.125%
±0.1%
±0.125%
±0.125%
±0.05%
±0.075%
±0.075%
±0.125%
12
48
12
12
9-36
18-75
9-36
9-36
75
90
270
110
6.56
1.65
6.83
6.70
90%
89%
89.5%
88.3%
91.5%
91%
91.5%
89.5%
C77, P32
c
Please refer to the part number structure for additonal ordering model numbers and options.
d
All specifications are at nominal line voltage, nominal output voltage and full load, +25° C.
e
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.
unless otherwise noted. See detailed specifications.
f
I/O caps are necessary for our test equipment and may not be needed for your application.
g
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.
PART NUMBER STRUCTURE
U W E
-
12
/
6
-
Q12 P B
-
C
Unipolar, Single-output
Wide Input Range
RoHS Hazardous Materials Compliance
C=RoHS-6, standard
Baseplate (optional)
Blank = No baseplate (standard)
B = Baseplate installed (optional special order)
On/Off Control Polarity
P = Positive polarity (standard for Q12 models, optional for Q48 models)
N = Negative polarity (standard for Q48 models, optional special order for Q12 models)
Eighth-Brick Package
Nominal Output Voltage
Note:
Maximum Rated Output
Current in Amps
Input Voltage Range
Q12 = 9-36 Volts
Q48 = 18-75 Volts
Some model number combinations may
not be available. Contact Murata Power
Solutions for further information.
DETAIL 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 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
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
8
8
none
25
25
10
20
40
20
See ordering guide
0.1 A
2
sec
250
75
8.89
5
250
270
9.36
5
250
110
9.04
5
1
20
40
20
9
8.2
8
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Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UWE Series.A17
Page 2 of 20
UWE Series
Wide Input, Isolated
Eighth-Brick DC/DC Converters
DETAIL SPECIFICATIONS, Q12 MODELS, CONTINUED
INPUT
(continued)
(Off, UV, OT shutdown)
Internal input filter type
Reverse polarity protection
Remote On/Off control
Positive logic ("P" model suffix)
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
UWE-3.3/20-Q12
UWE-5/15-Q12
UWE-12/6-Q12
L-C
Yes
UWE-15/5-Q12
UWE-24/3-Q12
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 <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 ±1%
of final value
Start-up time
Vin to Vout regulated, mSec
Remote On/Off to Vout regulated, mSec
Switching frequency, KHz
20
5
245±25
20
15
215-250
4.5
6
0.5
27
22.5
1500
1000
10,000
10,000
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
4700
1500
1500
1500
750
100
1000
Basic insulation
8.5
7.25
4.0
1000
1000
Current limiting, hiccup autorestart. Remove overload for recovery.
1.0
1.5
Continuous, output shorted to ground. No damage.
15
18
29
1.5
1.0
50
40
30
275 ±25
30
25
275 ±25
40
30
215 ±15
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Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UWE Series.A17
Page 3 of 20
UWE Series
Wide Input, Isolated
Eighth-Brick DC/DC Converters
DETAIL SPECIFICATIONS, Q12 MODELS, CONTINUED
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 FCC part 15, class B, EN55022 conducted and CISPR22 class B conducted with external filter.
Meets UL/cUL 60950-1, CSA-C22.2 No.60950-1, IEC/EN 60950-1
UWE-3.3/20-Q12
UWE-5/15-Q12
UWE-12/6-Q12
-40 to +85 with derating
-55 to +125
+100
+120
to +85°C/85% non-condensing
UWE-15/5-Q12
UWE-24/3-Q12
DETAIL SPECIFICATIONS, Q48 MODELS
UWE-12/6-Q48
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
Suggested external 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)
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
2
UWE-3.3/20-Q48
See ordering guide
17.5
16
none
40
10
See ordering guide
0.1 A sec
100
90
4.35
4
Pi-type
None
2
17.5
16.5
30
8
0.1 A
2
sec
150
75
4.1
4
Negative logic ("N" model suffix)
Current, mA
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Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UWE Series.A17
Page 4 of 20
UWE Series
Wide Input, Isolated
Eighth-Brick DC/DC Converters
DETAIL 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
Designed to meet FCC part 15, class B, EN55022 conducted and CISPR22 class B conducted.
Designed to meet UL/cUL 60950-1, CSA-C22.2 No.60950-1, IEC/EN 60950-1
+120
to +85°C/85% non-condensing
-40 to +85 with derating
-55 to +125
+100
+120
to +85°C/85% non-condensing
-40 to +85 with derating
-55 to +125
30
20
220±20
20
10
215±20
50 (to ± 1%)
50 (to ± 2%)
15
8.0
2250
1500
750
100
1000
Basic insulation
26.5
2250
1500
750
100
1000
4,700
UWE-12/6-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
UWE-3.3/20-Q48
Current limiting, hiccup autorestart. Remove overload for recovery.
1.0
Continuous, output shorted to ground. No damage.
4
5.0
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UWE Series.A17
Page 5 of 20
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