MURATA UCE Technical data
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FEATURES
■
RoHS-6 or RoHS-5 compliant
■
Industry standard eighth-brick pinout
and package
■
Outputs from 1.5V to 12V up to 100W
■
Low profi le 0.4" height with 0.9" x 2.3"
outline dimensions
■
36 to 75 Vdc input range (48V nominal)
■
Fully isolated, 2250 Vdc (BASIC)
insulation
■
Outstanding thermal performance
and derating
■
Extensive self-protection and short
circuit features with no output reverse
conduction
■
On/Off control, trim and sense functions
■
Interleaved synchronous rectifi cation
yields high effi ciency over 90%
■
Fully protected against temperature and
voltage limits
■
Certifi ed to UL/EN/IEC 60950-1 and
CAN/CSA C22.2 No. 60950-1 safety
approvals
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Typical unit
For effi cient, fully isolated DC power in the smallest space, the UCE
open frame DC/DC converter series fi t in industry-standard “eighth
brick” outline dimensions and mounting pins (on quarter-brick pinout).
PRODUCT OVERVIEW
Units are offered with fi xed output voltages from
1.5 to 12 Volts and currents up to 30 Amps. UCEs
operate over a wide temperature range (up to +85
degrees Celsius at moderate airfl ow) with full rated
power. Interleaved synchronous rectifi er topology
yields excellent effi ciency over 90% and no reverse
output conduction.
UCEs achieve these impressive mechanical and
environmental specs while delivering excellent
electrical performance in a through-hole package.
Overall noise is typically 50 mV pk-pk (low voltage
models) with fast step response. These converters
offer tight output regulation and high stability even
with no load. 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.
“Hiccup” output protection automatically restarts
the converter when the fault is removed.
A convenient remote On/Off control input enables
phased startup and shutdown in multi-voltage applications. To compensate for longer wiring and to
retain output voltage accuracy at the load, UCEs employ a Sense input to dynamically correct for ohmic
losses. A trim input may be connected to a user’s
adjustment potentiometer or trim resistors for output
voltage calibration. The UCE will tolerate substantial
capacitive loading for bypass-cap applications.
UCEs include industry-standard safety certifi cations and BASIC I/O insulation provides input/output
isolation to 2250V. Radiation emission testing is
performed to widely-accepted EMC standards.
SIMPLIFIED BLOCK DIAGRAM
+V
IN
(3)
–V
IN
(1)
REMOTE
ON/OFF
CONTROL
(2)
For full details go to
www.murata-ps.com/rohs
TRANSFORMER
PWM
CONTROLLER
Figure 1. Simplifi ed Block Diagram
OPTO
ISOLATION
SWITCH
CONTROL
PULSE
INPUT UNDERVOLTAGE, INPUT
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS
REFERENCE &
ERROR AMP
Typical topology is shown.
+SENSE
(7)
+V
OUT
(8)
−V
OUT
(4)
−SENSE
(5)
V
OUT
TRIM
(6)
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13 Nov 2009 MDC_UCE.A24_long Page 1 of 16
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
PERFORMANCE SPECIFICATIONS AND ORDERING GUIDE
Output Input
Ripple & Noise
OUT
(V)
I
(A)
OUT
Power
(W)
Model Family
V
UCE-1.2/25-D48N-C 1.2 25 30 Please contact Murata Power Solutions for further information.
UCE-1.5/20-D48N-C 1.5 20 30 50 100 ±0.15% ±0.3% 48 36-75 50 0.72 85% 87% C56 P32
UCE-1.5/40-D48N-C 1.5 40 60 Please contact Murata Power Solutions for further information.
UCE-1.8/30-D48N-C 1.8 30 54 30
UCE-2.5/20-D48N-C 2.5 20 50
UCE-3.3/15-D48N-C 3.3 15 49.5
UCE-3.3/30-D48N-C 3.3 30 99 ±0.1% ±0.2% 2.27 89% 91%
UCE-5/10-D48N-C 51050
UCE-5/20-D48N-C 5 20 100 30 60
UCE-12/4.2-D48N-C 12 4.2 50.4 150
UCE-12/8.3-D48N-C 12 8.3 99.6 200 2.31 90%
M Please refer to the model number structure for additional ordering part numbers and options .
PART NUMBER STRUCTURE
(mVp-p) Regulation (max.)
80
±0.125% ±0.25%
50
100
±0.125% ±0.25%
300
IN Nom.
V
(V)
48 36-75
Range
(V)
IIN, no
IIN, full
load
(mA)
load
(A)Typ. Max. Line Load Min. Typ. Case Pinout
45 1.28 87% 88%
50 1.14 88% 91%
1.15 86% 90%
60
30 1.15 88% 90.5%
2.25 90% 92.5%
50
1.14
Effi ciency Package
86%
C56 P32
92%
/
U CE -
Output Confi guration:
U = Unipolar/Single
Eighth-Brick Package
Nominal Output Voltage
Maximum Rated Output
Current in Amps
Input Voltage Range:
D48 = 36-75V,
48V nominal
30 N B
D48-3.3
On/Off Control Polarity
N = Negative polarity, standard
P = Positive polarity, optional
Baseplate (optional, not available on some models)
Blank = No baseplate, standard
B = Baseplate installed, optional, special quantity order
Product Adaptations
Murata Power Solutions offers several variations of our core product family.
These products are available under scheduled quantity orders and may also
include separate manufacturing documentation from a mutually agreeable
Product Specifi cation. Since these product adaptations largely share a common
parts list and similar specifi cations and test methods with their root products,
they are provided at excellent costs and delivery. Please contact Murata Power
Solutions for details.
H
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
(Through-hole packages only)
Pin Length Option
Blank = Standard pin length 0.180 inches (4.6mm)
L1 = Pin length 0.110 inches (2.79mm)*
L2 = Pin length 0.145 inches (3.68mm)*
* Special quantity order is required.
Conformal coating (optional)
Blank = no coating, standard
H = Coating added, optional, special quantity order
Note: Some model combinations may not be
available. Contact Murata Power Solutions for
availability.
As of this date, the following products are available:
UCE-3.3/30-D48NHL2-Y
UCE-12/4.2-D48NHL2-Y
These models are all negative On/Off polarity, no baseplate, conformal coating
added, 3.68mm pin length, and RoHS-5 hazardous substance compliance (with
lead).
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13 Nov 2009 MDC_UCE.A24_long Page 2 of 16
SPECIFICATIONS
INPUT CHARACTERISTICS
Start-up
Model Family
UCE-1.5/20-D48
UCE-1.8/30-D48
UCE-2.5/20-D48
UCE-3.3/15-D48
UCE-3.3/30-D48
UCE-5/10-D48
UCE-5/20-D48
UCE-12/4.2-D48
UCE-12/8.3-D48
OUTPUT CHARACTERISTICS
threshold
Under-
Reflected
voltage
Min.
34.5 32 1.53 Pi
Shutdown
(A)
34
34 31.5 3.00 Pi
34
(back)
Ripple
Current
(V)
(mA)②
32
32.5 1.72
32 1.53
32 1.54
10-30,
model
32 3.06
dependent
32 1.52
32 3.07
Inrush
Transient
A
A
2
sec
0.05
2
sec
Output
Short
Circuit
(mA)
50-150,
model
dependent
Low Line
(VIN=min.)
(A)
0.97
Standby
Mode
(mA)
1-10,
model
dependent
Internal
Input Filter
Type
L-C
L-C
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Reverse
Polarity
Protection
None, install
external fuse
Remote On/Off Control
Positive Logic
Current
(mA)
1.0
“P” Model
OFF=Ground
pin to +1V max.
ON=open or
+3.5 to +15V
Suffix
max.
Negative Logic
“N” Model
OFF=open or
+15V max.
ON=Ground pin to
+0.8V max.
Suffix
+2.5V to
VOUT
Accuracy
Model Family
50% Load
% of VNOM
UCE-1.5/20-D48
UCE-1.8/30-D48
UCE-2.5/20-D48
UCE-3.3/15-D48
UCE-3.3/30-D48
±1%
UCE-5/10-D48
UCE-5/20-D48
UCE-12/4.2-D48
UCE-12/8.3-D48
ISOLATION CHARACTERISTICS
Input to Output
Model Family
UCE-1.5/20-D48
UCE-1.8/30-D48 10
Capacitive
Loading Max. Low
ESR <0.02Ω Max.μFAdjustment
10,000
10,000 36
10,000 32
10,000 24
10,000 35
1000 15.
10,000 23 min.
1000 5.5
1000 12
Min.
V
Range
–10 to
+10% of
Vnom.
Input to
baseplate
Min.
V
Temperature
Coeffi cient
±0.02% of
Vout range
per °C
Baseplate to output
Min.
Minimum
Loading
No minimum
load
V
Remote
Sense
Compen-
sation
+10% See ordering guide
Isolation
Resistance
MΩ
100
UCE-2.5/20-D48
UCE-3.3/15-D48
UCE-3.3/30-D48
UCE-5/10-D48
2250 1500 1500
100
UCE-5/20-D48
UCE-12/4.2-D48
UCE-12/8.3-D48
Ripple/
Noise
(20 MHz
bandwidth)
Current Limit
Inception
Line/Load
Regulation Effi ciency
Isolation
Capacitance
pF Isolation Safety Rating
1000
98% of Vout,
after warmup
Basic Insulation
A
24.5
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SPECIFICATIONS, CONTINUED
MISCELLANEOUS CHARACTERISTICS
Calculated
Model Family
UCE-1.5/20-D48
UCE-1.8/30-D48
UCE-2.5/20-D48
UCE-3.3/15-D48
UCE-3.3/30-D48
UCE-5/10-D48
UCE-5/20-D48
UCE-12/4.2-D48
UCE-12/8.3-D48
4
MTBF
TBC
1.8 M HRS 3
TBC 4.25
2.6 M HRS
2.7 M HRS
TBC
2.4 M HRS
Operating
Temperature Range
with derating
(°C)
−40 to +85
Operating
PCB
Temperature
(no derating)
−40 to +110
(model
dependent)
Storage
Temperature
Range
(°C)
−55 to
+125
Thermal
Protection/
Shutdown
(ºC)
120 5
110 0.5 7 max.
125 5 14.5
Short
Circuit
Current
(A)
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Overvoltage
Protection
(V) Via
magnetic
feedback
(V)
1.95
2.8 V. max
12
Short Circuit
Protection
Method
Current
limiting,
hiccup
autorestart.
Remove
overload for
recovery.
Short Circuit
16
Duration
Continuous,
output
shorted to
ground. No
damage.
(non-condensing)
to +85°C/85%
Relative
Humidity
DYNAMIC CHARACTERISTICS
Dynamic Load
Response
(50-75-50%
load step) to 1%
of fi nal value,
Model Family
μSec
(See note 1)
UCE-1.5/20-D48
UCE-1.8/30-D48
UCE-2.5/20-D48
UCE-3.3/15-D48
UCE-3.3/30-D48
UCE-5/10-D48
UCE-5/20-D48
100 max. 10 10 330
UCE-12/4.2-D48
UCE-12/8.3-D48
Start-up Time
IN to VOUT
V
regulated
(Max.)
100 50 50 480
150 10 10 400
100 50 50 350
200 50 50 480
50 15 10 380
100 50 50 400
30 60 60
50 50 50
Remote On/
Off to VOUT
regulated
mSec
(Max.)
Switching
Frequency
KHz
200
ABSOLUTE MAXIMUM RATINGS
Input Voltage:
Continuous:
48 Volt input models 75 Volts
Transient (100 mSec. Max.)
48 Volt input models 100 Volts
On/Off Control +15 Volts
Input Reverse Polarity Protection 5 Amps, 10 sec. max.
Output Overvoltage Protection Magnetic feedback.
See specifi cations.
Output Current Current-limited. Devices can
withstand sustained short circuit
without damage.
Storage Temperature –40 to +125°C.
Lead Temperature See soldering guidelines.
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 Specifi cations Table is not implied
or recommended.
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SPECIFICATIONS, CONTINUED
PERFORMANCE SPECIFICATION NOTES
(1) All models are tested and specifi ed with external 1||10 μF ceramic/tantalum output capacitors and no external input capacitor. All capacitors are low ESR types. These capacitors are
necessary to accommodate our test equipment and may not be required to achieve specifi ed
performance in your applications. All models are stable and regulate within spec under no-load
conditions.
General conditions for Specifi cations are +25 deg.C, VIN = nominal, VOUT = nominal, full load.
Adequate airfl ow must be supplied for extended testing under power.
(2) Input Ripple Current is tested and specifi ed over a 5 Hz to 20 MHz bandwidth. Input fi ltering
IN = 33 μF, 100V tantalum, CBUS = 220 μF, 100V electrolytic, LBUS = 12 μH.
is C
(3) Note that Maximum Power Derating curves indicate an average current at nominal input
voltage. At higher temperatures and/or lower airfl ow, the DC/DC converter will tolerate brief
full current outputs if the total RMS current over time does not exceed the Derating curve. All
Derating curves are presented at sea level altitude. Be aware of reduced power dissipation
with increasing density altitude.
(4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case
3, ground fi xed conditions, Tpcboard=+25 deg.C, full output load, natural air convection.
(5) The On/Off Control is normally controlled by a switch. But it may also be driven with external logic or by applying appropriate external voltages which are referenced to Input Common.
The On/Off Control Input should use either an open collector or open drain transistor.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from
the selected setting.
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
(7) The outputs are not intended to sink appreciable reverse current. This may damage the
outputs.
(8) Output noise may be further reduced by adding an external fi lter. See I/O Filtering and Noise
Reduction.
(9) All models are fully operational and meet published specifi cations, including “cold start” at
–40ºC.
(10) Regulation specifi cations describe the deviation as the line input voltage or output load
current is varied from a nominal midpoint value to either extreme.
(11) Alternate pin length and/or other output voltages are available under special quantity order.
(12) Output overvoltage is non-latching. When the overvoltage fault is removed, the converter
will immediately recover.
(13) Do not exceed maximum power specifi cations when adjusting the output trim.
(14) At zero output current, the output may contain low frequency components which exceed
the ripple specifi cation. The output may be operated indefi nitely with no load.
(15) If reverse polarity is accidentally applied to the input, a body diode will become forward bi-
ased and will conduct considerable current. To ensure reverse input protection with full output
load, always connect an external input fuse in series with the +V
IN input.
PHYSICAL CHARACTERISTICS
Outline dimensions See mechanical specs (below)
Pin material Copper alloy
Pin diameter 0.04/0.062" (1.016/1.524mm)
Pin fi nish Nickel underplate with gold overplate
UCE-1.5/20-D48 0.67 ounces (19 grams)
UCE-1.8/30-D48,
UCE-2.5/20-D48
Weight
Electromagnetic interference (external fi lter required)
Safety Certifi ed to UL/cUL 60950-1, CSA-C22.2 No. 60950-1, IEC/EN 60950-1
UCE-5/10-D48
UCE-5/20-D48
UCE-12/4.2-D48
UCE-3.3/15-D48 1 ounce (28 grams)
UCE-3.3/30-D48, UCE-12/8.3-D48 0.81 ounces (23 grams)
0.71 ounces (20 grams)
Designed to meet EN55022/CISPR22 (requires external fi lter)
SOLDERING GUIDELINES
Murata Power Solutions recommends the specifi cations below when installing these converters. These specifi cations vary depending on the solder type.
Exceeding these specifi cations may cause damage to the product. Your production environment may differ; therefore please thoroughly review these guidelines
with your process engineers.
Wave Solder Operations for through-hole mounted products (THMT)
For Sn/Ag/Cu based solders:
Maximum Preheat Temperature 115ºC.
Maximum Pot Temperature 270ºC.
Maximum Solder Dwell Time 7 seconds
For Sn/Pb based solders:
Maximum Preheat Temperature 105ºC.
Maximum Pot Temperature 250ºC.
Maximum Solder Dwell Time 6 seconds
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