For efficient, fully isolated DC power in the smallest space, the UEE
ope
open frame DC-DC converter series fit in industry-standard “eighth
bri
brick” outline dimensions and mounting pins (on quarter-brick pinout)
or surface mount option.
FEATURES
Interleaved synchronous rectification yields high
efficiency over 90%
to 75 Vdc input range (48V nominal)
36
Outstanding thermal performance and derating
profile 0.40" height with 0.9" x 2.3" outline
Low
dimensions
isolated, 2250 Vdc (BASIC) insulation
Fully
Industry standard DOSA eighth-brick pinout and
package and surface mount (SMT) option
Extensive self-protection and short circuit
features
On/Off control, trim and sense functions
protected against temperature and voltage
Fully
limits
RoHS-6 compliant
UL/IEC 60950-1 and CAN/CSA C22.2 No. 60950-
1, 2nd Edition safety approvals
PRODUCT OVERVIEW
Units are offered with a fixed output voltage and
current up to 30 Amps. UEEs operate over a wide
temperature range (up to +85°C at moderate
airflow) with full rated power. Synchronous rectifier
topology yields excellent efficiency.
UEEs achieve these impressive mechanical and
environmental specs while delivering excellent
electrical performance in an industry standard
DOSA compatible through-hole package or surface
mount option. The unit is fully protected against
input undervoltage, output overcurrent and short
circuit. An on-board temperature sensor shuts
down the converter if thermal limits are reached
and automatically restarts the converter when the
fault is removed.
An On/Off control input enables phased startup
and shutdown in multi-voltage applications. UEEs
include a Sense input to correct for ohmic losses. A
trim input may be connected to a user’s adjustment
potentiometer or trim resistors for output voltage
calibration.
UEEs include industry-standard safety certifi-
cations and BASIC I/O insulation provides input/
output isolation to 2250V. Radiation and conducted
emission testing is performed to widely accepted
EMC standards.
F1
+Vin (1)
Barrier
+Vout (8)
External
DC
Power
Source
On/Off
Control
(2)
Controller
and Power
Open = On
Reference and
Error Amplifier
Trim (6)
logic)
-Vin (3)
-Vout (4)
Figure 1. Connection Diagram
Typical topology is shown. Murata Power Solutions recommends an external fuse.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_UEE_Series.C01
Page 1 of 29
UEE Series
Isolated, High-Density, Eighth-Brick
DOSA Low Profile DC-DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output
V
OUT
(V)
3.3
3.3
3.3
Input
Regulation (max.)
Line
Load
±0.1%
±0.1%
±0.1%
±0.1%
±0.2%
±0.2%
Model Family
UEE-3.3/15-D48
UEE-3.3/25-D48
UEE-3.3/30-D48
I
OUT
(A)
15
25
30
Power
(W)
50
82.5
99
Ripple & Noise
(mVp-p)
Typ.
Max.
50
30
30
70
60
60
V
IN
Nom. Range
(V)
(V)
48
48
48
36-75
36-75
36-75
I
IN,
no
load
(mA)
30
100
100
I
IN,
full
load
(A)
1.15
2.29
2.29
Efficiency
Min.
Typ.
88%
88%
88%
90%
90%
90%
Package
Case Pinout
C56
C56
C56
P32
P32
P32
➀
Please refer to the model number structure for additional ordering part numbers and options.
➁
All specifications are typical unless noted. General conditions for Specifications are +25 deg.C,
Vin=nominal, Vout=nominal (no trim installed), full rated load. Adequate airflow must be supplied
for extended testing under power.
All models are tested and specified with external 1μF and 10 μF paralleled output capacitors and
no external input capacitor. All capacitors are low ESR types. Caps are layout dependent. These
capacitors are necessary to accommodate our test equipment and may not be required in your
applications. All models are stable and regulate within spec under no-load conditions.
➂
Some models are pending safety certification.
PART NUMBER STRUCTURE
U EE
-
3.3
/
30
-
D48 N M B H
Output Configuration:
U = Unipolar/Single
Lx
-
C
RoHS Hazardous Materials compliance
C = RoHS6 (does not claim EU RoHS exemption 7b–lead in solder), standard
Y = RoHS5 (with lead), optional, special quantity order
Eighth-Brick Package
Nominal Output Voltage
Maximum Rated Output
Current in Amps
Pin Length Option (Through-hole packages only)
Blank = Standard pin length 0.180 inches (4.6mm)
L1 = Pin length 0.110 inches (2.79mm)
➀
L2 = Pin length 0.145 inches (3.68mm)
➀
Conformal coating (optional)
Blank = no coating, standard
H = Coating added, optional, special quantity order
(not available on SMT models)
Baseplate (optional, not available on UEE-3.3/15-D48 models or SMT models)
Blank = No baseplate, standard
B = Baseplate installed, optional, special quantity order
Surface Mount (SMT models cannot accept the baseplate)
Blank = Thru-hole pin mount, no SMT
M = Surface mount (MSL Rating 2a)
➁
On/Off Control Logic
N = Negative logic, standard
P = Positive logic, optional
Input Voltage Range:
D48 = 36-75V,
48V nominal
➀
Special quantity order is required; samples available with standard pin length only.
➁
SMT (M) versions not available in sample quantities.
➂
Some model number combinations may not be available. See website or contact your local Murata sales representative.
www.murata-ps.com/support
MDC_UEE_Series.C01
Page 2 of 29
UEE Series
Isolated, High-Density, Eighth-Brick
DOSA Low Profile DC-DC Converters
FUNCTIONAL SPECIFICATIONS, UEE-3.3/15-D48
ABSOLUTE MAXIMUM RATINGS
Input Voltage, Continuous
Input Voltage, Transient
Isolation Voltage
Input Reverse Polarity
On/Off Remote Control
Output Power
Output Current
Operating or non-operating,
100 mS max. duration
Input to output
None, install external fuse
Power on or off, referred to -Vin
Conditions
➀
Minimum
0
0
Typical/Nominal
Maximum
80
100
2250
Units
Vdc
Vdc
Vdc
Vdc
Vdc
W
None
-0.8
0
13.5
50
Current-limited, no damage,
0
15
A
short-circuit protected
Storage Temperature Range
Vin = Zero (no power)
-55
125
°C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Specifications Table is not implied or recommended.
INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold
Undervoltage shutdown
Overvoltage shutdown
Reverse Polarity Protection
Internal Filter Type
Input current
Full Load Conditions
Low Line
Inrush Transient
Output in Short Circuit
No Load
Standby Mode (Off, UV, OT)
Reflected (back) ripple current
➁
Conditions
➀ ➂
36
Fast blow
Rising input voltage
Falling input voltage
None, install external fuse
33
31
48
34
32
None
None
Pi
1.15
1.53
0.01
72
30
4.6
75
10
35
33
Vdc
A
Vdc
Vdc
Vdc
Vdc
Vin = nominal
Vin = minimum
Iout = minimum, unit = ON
Measured at input with specified filter
Vin = 48V, full load
Vin = min, full load
No baseplate
N/A
N/A
88.0
88.0
2250
N/A
N/A
1.18
1.58
0.03
100
50
10
30
A
A
A
2
-Sec.
mA
mA
mA
mA, P-P
%
%
Vdc
Vdc
Vdc
GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage, input to output
Isolation Voltage, input to baseplate
Isolation Voltage, output to baseplate
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety
Calculated MTBF
90.0
90.0
basic
10
1000
Certified to UL-60950-1, CSA-C22.2 No.60950-1,
IEC 60950-1, 2nd edition
Per Telcordia SR-332, issue 1, class 3, ground
fixed, Tcase = +25°C
300
Power on to Vout regulated
Remote ON to Vout regulated
50-75-50% load step, settling time to within
±1% of Vout
same as above
Yes
2.3
330
360
10
10
300
±200
MΩ
pF
Hours x 10
6
KHz
mS
mS
μSec
mV
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation
220
±150
FEATURES and OPTIONS
Remote On/Off Control
➃
“N” suffix:
Negative Logic, ON state
Negative Logic, OFF state
Control Current
“P” suffix:
Positive Logic, ON state
Positive Logic, OFF state
Control Current
BasePlate
Conformal Coating
ON=Ground pin or external voltage
OFF=Pin open or external voltage
sinking
ON=Pin open or external voltage
OFF=Ground pin or external voltage
sinking
"B" suffix
"H" suffix
-0.8
2.5
1
2.5
-0.8
1
N/A
optional
1
13.5
2
13.5
1
2
Vdc
Vdc
mA
V
V
mA
www.murata-ps.com/support
MDC_UEE_Series.C01
Page 3 of 29
UEE Series
Isolated, High-Density, Eighth-Brick
DOSA Low Profile DC-DC Converters
FUNCTIONAL SPECIFICATIONS, UEE-3.3/15-D48 (CONT.)
OUTPUT
Total Output Power
Voltage
Nominal Output Voltage
Setting Accuracy
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Minimum Load
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
Regulation
Line Regulation
Load Regulation
Ripple and Noise
➁
Temperature Coefficient
Maximum Capacitive Loading
Remote Sense Compliance
Conditions
➀
No trim
At 50% load
User-adjustable
Via magnetic feedback
Minimum
0.0
3.267
-1
-10
3.7
0.0
Typical/Nominal
49.5
3.30
Maximum
50
3.333
+1
+10
5.1
15
26
3
Units
W
Vdc
% of Vset.
% of Vnom.
Vdc
A
A
A
4.3
15
No minimum load
22
1.97
Continuous
Yes
98% of Vnom., after warmup
Hiccup technique, autorecovery within ±1.25%
of Vout
Output shorted to ground, no damage
Current limiting
Vin=min. to max., Vout=nom., Iout=nom.
Iout=min. to max., Vin=48V
5 Hz- 20 MHz BW
At all outputs
Cap. ESR=<0.02Ω, full resistive load
Sense connected at load
C56 case
LxWxH
18
50
±0.0046
0
±0.1
±0.1
70
±0.005
7500
10
% of Vout
% of Vout
mV pk-pk
% of Vout./°C
μF
% of Vout
Inches
mm
Inches
mm
Ounces
Grams
Ounces
Grams
Inches
mm
μ-inches
μ-inches
MECHANICAL (Through Hole Models)
Outline Dimensions (no baseplate)
(Please refer to outline drawing)
Outline Dimensions (with baseplate)
Weight
2.3x0.9x0.40 max.
58.4x22.9x10.16
2.3x0.9x0.50
58.4x22.9x12.7
1.09
31
N/A
N/A
0.04 & 0.062
1.016&1.524
Copper alloy
100-299
10-31
Aluminum
-40
-40
-55
115
85
115
125
135
No baseplate
No baseplate
With baseplate
With baseplate
Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness
Baseplate Material
Nickel subplate
Gold overplate
ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
Relative humidity, non-condensing
Altitude
RoHS rating
No Derating, 100 LFM, full power, vertical mount
No derating
Vin = Zero (no power)
Measured in center
External filter is required
To +85°C
must derate -1%/1000 feet
°C
°C
°C
°C
Class
%RH
feet
meters
125
B
10
-500
-152
RoHS-6
90
10,000
3048
Notes
➀
Unless otherwise noted, all specifications are at nominal input voltage, nominal output voltage and
full load.
General conditions are +25˚ Celsius ambient temperature, near sea level altitude, natural convec-
tion airflow.
All models are tested and specified with external parallel 1 μF and 10 μF multi-layer ceramic
output capacitors.
No external input capacitor is used. All capacitors are low-ESR types wired close to the converter.
These capacitors are necessary for our test equipment and may not be needed in the user’s ap-
plication.
➁
Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is
Cbus=220 μF, Cin=33 μF and Lbus=12 μH.
➂
All models are stable and regulate to specification under no load.
➃
The Remote On/Off Control is referred to -Vin. For external transistor control, use open collector
logic or equivalent.
➄
NOTICE—Please use only this customer data sheet as product documentation when laying out your
printed circuit boards and applying this product into your application. Do NOT use other materials as
official documentation such as advertisements, product announcements, or website graphics.
We strive to have all technical data in this customer data sheet highly accurate and complete. This cus-
tomer data sheet is revision-controlled and dated. The latest customer data sheet revision is normally
on our website (www.murata-ps.com) for products which are fully released to Manufacturing. Please be
especially careful using any data sheets labeled “Preliminary” since data may change without notice.
The pinout (Pxx) and case (Cxx) designations (typically P32 or C56) refer to a generic family of
closely related information. It may not be a single pinout or unique case outline. Please be aware
of small details which may affect your application and PC board layouts. Study the Mechanical
Outline drawings, Input/Output Connection table and all footnotes very carefully. Please contact
Murata Power Solutions if you have any questions.
www.murata-ps.com/support
MDC_UEE_Series.C01
Page 4 of 29
UEE Series
Isolated, High-Density, Eighth-Brick
DOSA Low Profile DC-DC Converters
TYPICAL PERFORMANCE DATA AND OSCILLOGRAMS, UEE-3.3/15-D48
UEE-3.3/15-D48 Efficiency and Power Dissipation @ Ta = +25°C
UEE-3.3/15-D48 Maximum Current Temperature Derating at Sea Level
(Vin = 48V, no baseplate, airflow is from Vin to Vout)
9
8
16
14
12
95
90
85
80
Power Dissipation (Watts)
Output Current (A)
7
100 to 400 LFM
10
8
6
4
2
0
30
35
40
45
50
55
60
65
70
75
80
85
Efficiency (%)
75
70
65
60
55
50
1
3
5
Vin = 75V
Vin = 48V
Vin = 36V
6
5
4
3
2
Power Dissipation (Vin = 48V)
1
0
Ambient Temperature (ºC)
7
9
11
13
15
Load Current (A)
UEE-3.3/15-D48 Maximum Current Temperature Derating at Sea Level
(Vin = 48V, no baseplate, airflow is from –Vin to +Vin)
16
14
12
Step Load Transient Response (Vin=48V, Vout=nominal, Cload=0, Iout=75% to 50% of full
Step Load Transient Response (Vin=48V, Vout=nominal, Cload=0, Iout=50% to 75% of full Step Load Transient Response (Vin=48V, Vout=nominal, Cload=0, Iout=50 to 75 to 50% of
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