Datasheet

ManualsBrandsMURATA POWER SOLUTIONS ManualsPSU ComponentsDC/DC converter (print) 3.33 V 7.5 A 25 W No. of outputs: 1 x

UEI25 Series

Single Output Isolated 25-Watt DC/DC Converters

MDC_UEI25W.B09 Page 1 of 24

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External

Power

Source

Reference and

Error Ampliﬁer

t4XJUDIJOH

t'JMUFST

t$VSSFOU4FOTF

-Vout (5)

+Vout (3)

Trim (4)

On/Off

Control

(6)

-Vin (2)

Open = On

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+Vin (1)

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Controller

and Power

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Barrier

Typical topology is shown. Murata Power Solutions

recommends an external fuse.

Typical unit

PRODUCT OVERVIEW

Featuring a full 25 Watt output in one square inch

of board area, the UEI25 series isolated DC/DC

converter family offers efﬁ cient regulated DC power

for printed circuit board mounting. The 0.96" x 1.1"

x 0.32" (24.4 x 27.9 x 8.1 mm) converter accepts a

2:1 input voltage range of 36 to 75 Volts DC, ideal

for telecom equipment. The industry-standard pin-

out ﬁ ts larger 1" x 2" converters. The ﬁ xed output

voltage is tightly regulated. Applications include

small instruments, area-limited microcontrollers,

data communications equipment, remote sensor

systems, telephone equipment, vehicle and portable

electronics.

The UEI25 series includes full magnetic and

optical isolation with Basic protection up to 2250

Volts DC. For powering digital systems, the outputs

offer fast settling to step transients and will accept

higher capacitive loads. Excellent ripple and noise

speciﬁ cations assure compatibility to noise-sus-

ceptible circuits. For systems requiring controlled

startup/shutdown, an external remote On/Off control

may use a switch, transistor or digital logic.

A wealth of self-protection features avoid both

converter and external circuit faults. These include

input undervoltage lockout and overtemperature

shutdown. The outputs current limit using the

“hiccup” autorestart technique and the outputs are

short-circuit protected. Additional features include

output overvoltage and reverse conduction elimina-

tion. The high efﬁ ciency offers minimal heat buildup

and “no fan” operation.

Figure 1. Connection Diagram

FEATURES



Cost effective small footprint DC/DC converter,

ideal for high current applications



Industry standard 0.96" x 1.1" x 0.32" open

frame package and pinout



Input voltage range of 36-75 Vdc



3.3V, 5V, or 12Vdc ﬁ xed output voltages



Isolation up to 2250 VDC (basic)



Up to 25 Watts total output power with exten-

sive self-protection shutdown features



High efﬁ ciency synchronous rectiﬁ er forward

topology up to 91%



Stable operation with no required external

components



Usable -40 to 85°C temperature range (with

derating)



Certiﬁ ed to UL 60950-1, CAN/CSA-C22.2 No.

60950-1, IEC60950-1, EN60950-1 safety

approvals, 2nd edition

Output (V) Current (A) Nominal Input (V)

3.3 7.5 48

5548

12 2.1 48

REG.-Nr. D806

Summary of content (24 pages)

PAGE 1
UEI25 Series www.murata-ps.com Single Output Isolated 25-Watt DC/DC Converters Output (V) Typical unit Current (A) 3.3 7.5 48 5 5 48 12 2.1 48 FEATURES PRODUCT OVERVIEW  Cost effective small footprint DC/DC converter, ideal for high current applications Featuring a full 25 Watt output in one square inch of board area, the UEI25 series isolated DC/DC converter family offers efﬁcient regulated DC power for printed circuit board mounting. The 0.96" x 1.1" x 0.32" (24.4 x 27.9 x 8.
PAGE 2
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ➀ ➂ Output Input R/N (mVp-p) Root Models ➀ VOUT (V) IOUT Total (A, Power max) (W) Typ. ➁ Max. Regulation (Max.) IIN, VIN min. Nom. Range load (V) (V) (mA) IIN, full load (A) Efficiency Line Load Case (inches) Case (mm) 3.3 7.5 25 50 80 ±0.1% ±0.2% 48 36-75 75 0.58 87.0% 89.5% 0.96x1.1x0.32 24.4x27.9x8.1 P85 UEI25-050-D48 5 5 25 50 80 ±0.1% ±0.
PAGE 3
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters FUNCTIONAL SPECIFICATIONS – MODEL UEI25-033-D48 Conditions ➀ ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Full power operation Operating or non-operating, 100 mS max.
PAGE 4
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters FUNCTIONAL SPECIFICATIONS (CONT.
PAGE 5
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters FUNCTIONAL SPECIFICATIONS – MODEL UEI25-050-D48 Conditions ➀ ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Full power operation Operating or non-operating, 100 mS max.
PAGE 6
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters FUNCTIONAL SPECIFICATIONS (CONT.
PAGE 7
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters FUNCTIONAL SPECIFICATIONS – MODEL UEI25-120-D48 Conditions ➀ ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Full power operation Operating or non-operating, 100 mS max.
PAGE 8
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters FUNCTIONAL SPECIFICATIONS (CONT.
PAGE 9
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters UEI25-033-D48 PERFORMANCE DATA Maximum Current Temperature Derating @sea level (airﬂow is from input to output) 8 Output Current (A ( mps) Efficiency (%) Efﬁciency vs. Line Voltage and Load Current @ 25°C 92 87 82 77 72 67 62 57 52 47 42 37 32 27 22 17 12 7 Vin = 36V Vin = 48V Vin = 60V Vin = 75V 0.33 to 2.0 m/s (65 to 400 LFM) 0.33 m/s (65 LFM) Vin = 36V, 48V, and 60V 0.5 m/s (100 LFM) 0. 1.0 to 2.
PAGE 10
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters UEI25-033-D48 PERFORMANCE DATA, CONTINUED On/Off ENABLE DELAY (Vin=48, Vout=nom, Iout=7.5A, Cload=2000uF, Ta=+25°C., ScopeBW=20Mhz) Trace 1= Enable. Trace 4=Vout Step Load Transient Response (Vin=48V, Vout=nom., Iout=50-75-50% of full load, Cload= 1 uFb ceramic || 10uF tantalum, Ta=+25°C., ScopeBW=20Mhz) Output Ripple and Noise (Vin=48V, Vout=nom., Iout=7.5A, Cload= 1 uFb ceramic || 10uF tantalum, Ta=+25°C.
PAGE 11
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters UEI25-050-D48 PERFORMANCE DATA Power Dissipation vs. Load Current @ 25°C 3.50 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 3.00 Vin = 36V 2.50 Loss (Watts) ( Efficiency (%) Efﬁciency vs. Line Voltage and Load Current @ 25°C Vin = 48V Vin = 60V Vin = 75V 2.00 1.50 Vin = 36V Vin = 48V 1.00 Vin = 60V Vin = 75V 0.50 1.0 1.0 1.4 1.8 2.2 2.6 3.0 3.4 3.8 4.2 4.6 1.4 1.8 2.2 2.6 3.0 3.4 3.8 4.2 4.6 5.
PAGE 12
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters UEI25-050-D48 PERFORMANCE DATA, CONTINUED On/Off Enable Delay (Vin=48V, Vout=nom., Iout=no load, Cload=0 μF, Ta=+25°C., ScopeBW=20MHz) Trace 1=Enable, Trace 4=Vout On/Off Enable Delay (Vin=48V, Vout=nom., Iout=5A, Cload=0 μF, Ta=+25°C., ScopeBW=20MHz) Trace 1=Enable, Trace 4=Vout On/Off Enable Delay (Vin=48V, Vout=nom., Iout=5A, Cload=2000 μF, Ta=+25°C.
PAGE 13
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters UEI25-120-D48 PERFORMANCE DATA Efﬁciency vs. Line Voltage and Load Current @ 25°C Power Dissipation vs. Load Current @ 25°C 89 4.46 88 3.96 87 3.46 85 Loss (Watts) ( Efficiency (%) 86 Vin = 36V Vin = 48V 84 Vin = 60V Vin = 75V 83 2.96 2.46 1.96 Vin = 36V 82 Vin = 48V 1.46 81 Vin = 60V Vin = 75V 80 0.96 79 0.46 0.4 78 0.4 0.6 0.8 0.9 1.1 1.3 1.4 1.6 1.8 1.9 0.6 0.8 0.9 1.1 1.3 1.4 1.6 1.8 1.9 2.
PAGE 14
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters UEI25-120-D48 PERFORMANCE DATA, CONTINUED Maximum Current Temperature Derating @sea level (VIN = 75V, airﬂow is from pin 1 to pin 3) On/Off ENABLE DELAY (Vin=48, Vout=nom, Iout=0A, Cload=0uF, Ta=+25°C., ScopeBW=20Mhz) Trace 1= Enable. Trace 4=Vout 2.2 Output Current (A ( mps) 2.15 2.1 0.33 m/s (65 LFM) 0.5 m/s (100 LFM) 1.0 m/s (200 LFM) 1.5 m/s ((300 LF M)) 2.05 1.95 1.
PAGE 15
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters MECHANICAL SPECIFICATIONS, OPEN FRAME THROUGH-HOLE MOUNT Dimensions are in inches (mm shown for ref. only). Third Angle Projection Case 75 24.4 0.96 Tolerances (unless otherwise speciﬁed): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 1˚ PIN #1 Components are shown for reference only. 27.9 1.10 INPUT/OUTPUT CONNECTIONS Pin Function P85 1 TOP VIEW SIDE VIEW MOUNTING PLANE .040±.002 PIN DIAMETER .071 .
PAGE 16
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters SHIPPING TRAYS AND BOXES, THROUGH-HOLE MOUNT Anti-static foam Label Label Each tray is 6 x 5 units (30 units per tray) SHIPPING TRAY DIMENSIONS UEI modules are supplied in a 30-piece (6 x 5) shipping tray. The tray is an anti-static closed-cell polyethylene foam. Dimensions are shown below. 6.4 Typ 28.4 Typ 6.4 Typ [9.92] 252.0 [9.92] 252.0 18.0 5x 38.1 25.4 Typ 190.5 Ref R 6.4 Typ A 252.0 Ref A 9.5 deep Ref 4x 44.5 22.9 252.
PAGE 17
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters MECHANICAL SPECIFICATIONS, SURFACE MOUNT (MSL RATING 2) Dimensions are in inches (mm shown for ref. only). Third Angle Projection Case 75 TOP VIEW PIN #1 Tolerances (unless otherwise speciﬁed): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 1˚ 24.4 0.96 Components are shown for reference only. INPUT/OUTPUT CONNECTIONS Pin Function P85 1 27.9 1.
PAGE 18
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters RECOMMENDED SMT PAD LAYOUT [20.32] 0.800 6X [2.60 ±0.25] .102 ±.010 6 [2.54] 0.100 INPUT/OUTPUT CONNECTIONS Pin Function P85 5 2 [10.16] 0.400 4 1 [2.54] 0.100 1 CL [25.4] 1.00 [10.16] 0.400 3 +Vin 2 -Vin 3 +Vout 4 Output Trim 5 -Vout 6 On/Off Control* *The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) logic CL [29.0] 1.
PAGE 19
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters TECHNICAL NOTES Input Fusing Certain applications and/or safety agencies may require fuses at the inputs of power conversion components. Fuses should also be used when there is the possibility of sustained input voltage reversal which is not current-limited. For greatest safety, we recommend a fast blow fuse installed in the ungrounded input supply line. The installer must observe all relevant safety standards and regulations.
PAGE 20
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters CAUTION: If you exceed these Derating guidelines, the converter may have an unplanned Over Temperature shut down. Also, these graphs are all collected near Sea Level altitude. Be sure to reduce the derating for higher altitude. +VOUT C1 C2 SCOPE RLOAD −VOUT C1 = 1μF C2 = 10μF LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 3.
PAGE 21
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters There are two CAUTIONs to observe for the Trim input: There are two CAUTIONs for the On/Off Control: CAUTION: To avoid unplanned power down cycles, do not exceed EITHER the maximum output voltage OR the maximum output power when setting the trim. If the output voltage is excessive, the OVP circuit may inadvertantly shut down the converter. If the maximum power is exceeded, the converter may enter current limiting.
PAGE 22
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters Emissions Performance Murata Power Solutions measures its products for radio frequency emissions against the EN 55022 and CISPR 22 standards. Passive resistance loads are employed and the output is set to the maximum voltage. If you set up your own emissions testing, make sure the output load is rated at continuous power while doing the tests. The recommended external input and output capacitors (if required) are included.
PAGE 23
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters Vertical Wind Tunnel IR Transparent optical window Unit under test (UUT) Variable speed fan Murata Power Solutions employs a computer controlled custom-designed closed loop vertical wind tunnel, infrared video camera system, and test instrumentation for accurate airﬂow and heat dissipation analysis of power products.
PAGE 24
UEI25 Series Single Output Isolated 25-Watt DC/DC Converters Through-hole Soldering Guidelines SMT Reflow Soldering Guidelines Murata Power Solutions recommends the TH soldering speciﬁcations below when installing these converters. These speciﬁcations vary depending on the solder type. Exceeding these speciﬁcations may cause damage to the product. Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers.