UEI25 Series
www.murata-ps.com
Single Output Isolated 25-Watt DC/DC Converters
Output (V) Current (A) Nominal Input (V)
3.3 7.5 48
Typical unit
55 48
12 2.1 48
FEATURES PRODUCT OVERVIEW
??
Cost effective small footprint DC/DC converter, Featuring a full 25 Watt output in one square inch offer fast settling to step transients and will accept
ideal for high current applications of board area, the UEI25 series isolated DC/DC higher capacitive loads. Excellent ripple and noise
converter family offers ef? cient regulated DC power speci? cations assure compatibility to noise-sus-
??
Industry standard 0.96" x 1.1" x 0.32" open
for printed circuit board mounting. The 0.96" x 1.1" ceptible circuits. For systems requiring controlled
frame package and pinout
x 0.32" (24.4 x 27.9 x 8.1 mm) converter accepts a startup/shutdown, an external remote On/Off control
??
Input voltage range of 36-75 Vdc
2:1 input voltage range of 36 to 75 Volts DC, ideal may use a switch, transistor or digital logic.
for telecom equipment. The industry-standard pin- A wealth of self-protection features avoid both
??
3.3V, 5V, or 12Vdc ? xed output voltages
out ? ts larger 1" x 2" converters. The ? xed output converter and external circuit faults. These include
??
Isolation up to 2250 VDC (basic)
voltage is tightly regulated. Applications include input undervoltage lockout and overtemperature
??
Up to 25 Watts total output power with exten- small instruments, area-limited microcontrollers, shutdown. The outputs current limit using the
sive self-protection shutdown features data communications equipment, remote sensor ?hiccup? autorestart technique and the outputs are
systems, telephone equipment, vehicle and portable short-circuit protected. Additional features include
? ?
High ef? ciency synchronous recti? er forward
electronics. output overvoltage and reverse conduction elimina-
topology up to 91%
The UEI25 series includes full magnetic and tion. The high ef? ciency offers minimal heat buildup
? ?
Stable operation with no required external
optical isolation with Basic protection up to 2250 and ?no fan? operation.
components
Volts DC. For powering digital systems, the outputs
? ?
Usable -40 to 85?C temperature range (with
derating)
??Certi? ed to UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, EN60950-1 safety
approvals, 2nd edition
F1 +Vin (1) *TPMB UJPO +Vout (3)
Barrier
t4XJUDIJOH
External
t' JMUFST
On/Off
DC
Control Controller
Power
t$VSSFOU4FOTF
and Power
(6)
Source
SBOTGFS5
Open = On
Reference and
$MPTFE 0GG
Error Ampli?er
1 PTJUJWF
Trim (4)
MPHJD
-Vin (2)
-Vout (5)
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_UEI25W.B10 Page 1 of 24UEI25 Series
www.murata-ps.com
Single Output Isolated 25-Watt DC/DC Converters
Output (V) Current (A) Nominal Input (V)
3.3 7.5 48
Typical unit
55 48
12 2.1 48
FEATURES PRODUCT OVERVIEW
??
Cost effective small footprint DC/DC converter, Featuring a full 25 Watt output in one square inch offer fast settling to step transients and will accept
ideal for high current applications of board area, the UEI25 series isolated DC/DC higher capacitive loads. Excellent ripple and noise
converter family offers ef? cient regulated DC power speci? cations assure compatibility to noise-sus-
??
Industry standard 0.96" x 1.1" x 0.32" open
for printed circuit board mounting. The 0.96" x 1.1" ceptible circuits. For systems requiring controlled
frame package and pinout
x 0.32" (24.4 x 27.9 x 8.1 mm) converter accepts a startup/shutdown, an external remote On/Off control
??
Input voltage range of 36-75 Vdc
2:1 input voltage range of 36 to 75 Volts DC, ideal may use a switch, transistor or digital logic.
for telecom equipment. The industry-standard pin- A wealth of self-protection features avoid both
??
3.3V, 5V, or 12Vdc ? xed output voltages
out ? ts larger 1" x 2" converters. The ? xed output converter and external circuit faults. These include
??
Isolation up to 2250 VDC (basic)
voltage is tightly regulated. Applications include input undervoltage lockout and overtemperature
??
Up to 25 Watts total output power with exten- small instruments, area-limited microcontrollers, shutdown. The outputs current limit using the
sive self-protection shutdown features data communications equipment, remote sensor ?hiccup? autorestart technique and the outputs are
systems, telephone equipment, vehicle and portable short-circuit protected. Additional features include
? ?
High ef? ciency synchronous recti? er forward
electronics. output overvoltage and reverse conduction elimina-
topology up to 91%
The UEI25 series includes full magnetic and tion. The high ef? ciency offers minimal heat buildup
? ?
Stable operation with no required external
optical isolation with Basic protection up to 2250 and ?no fan? operation.
components
Volts DC. For powering digital systems, the outputs
? ?
Usable -40 to 85?C temperature range (with
derating)
??Certi? ed to UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, EN60950-1 safety
approvals, 2nd edition
F1 +Vin (1) *TPMB UJPO +Vout (3)
Barrier
t4XJUDIJOH
External
t' JMUFST
On/Off
DC
Control Controller
Power
t$VSSFOU4FOTF
and Power
(6)
Source
SBOTGFS5
Open = On
Reference and
$MPTFE 0GG
Error Ampli?er
1 PTJUJWF
Trim (4)
MPHJD
-Vin (2)
-Vout (5)
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_UEI25W.B10 Page 1 of 24UEI25 Series
Single Output Isolated 25-Watt DC/DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ? ?
Output Input
R/N (mVp-p) Regulation (Max.) IIN, IIN, Ef? ciency Package, C75
IOUT Total VIN min. full
VOUT (A, Power Nom. Range load load
Root Models ? (V) max) (W) Typ. ? Max. Line Load (V) (V) (mA) (A) Min. Typ. Case (inches) Case (mm) Pinout
UEI25-033-D48 ? 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% ?0.2% 48 36-75 30 0.57 89.0% 91% 0.96x1.1x0.32 24.4x27.9x8.1 P85
UEI25-120-D48 12 2.1 25.2 95 120 ?0.1% ?0.1% 48 36-75 20 0.6 86.0% 87.5% 0.96x1.1x0.32 24.4x27.9x8.1 P85
Notes:
? Please refer to the part number structure for additional options and complete order- Output capacitors are 1 ?F ceramic in parallel with 10 ?F electrolytic. The input cap
ing part numbers. is 4.7 ?F ceramic, low ESR.
? Ripple and Noise is shown at 20 MHz bandwidth. I/O caps are necessary for our test equipment and may not be needed for your ap-
? All speci? cations are at nominal line voltage and full load, +25 ?C. unless otherwise plication.
? Minimum load is 10% for rated speci? cations.
noted. See detailed speci? cations for full conditions.
PART NUMBER STRUCTURE
UEI25 - 033 - D48 P M Lx - C
Unipolar Output Isolated RoHS-6 Hazardous Substance Compliance
25-Watt Series (Does not claim EU RoHS exemption 7b, lead in solder)
Nominal Output Voltage Pin Length Option (through-hole only)
in Tenths of a Volt Blank = Std. pin length 0.25? (6.3mm)
L1 = 0.110? (2.79mm) ?
L2 = 0.145? (3.68mm) ?
Input Voltage Range Surface Mount Option
D48 = 36-75 Vdc Blank = Through-hole mount
M = Surface mount (MSL rating 2) ?
On/Off Control Logic:
P = Positive
N = Negative
? Special quantity order is required; samples available with standard pin length only.
? SMT (M) versions not available in sample quantities.
? Some model number combinations may not be available. See website or contact your local Murata sales representative.
www.murata-ps.com/support
MDC_UEI25W.B10 Page 2 of 24UEI25 Series
www.murata-ps.com
Single Output Isolated 25-Watt DC/DC Converters
Output (V) Current (A) Nominal Input (V)
3.3 7.5 48
Typical unit
55 48
12 2.1 48
FEATURES PRODUCT OVERVIEW
??
Cost effective small footprint DC/DC converter, Featuring a full 25 Watt output in one square inch offer fast settling to step transients and will accept
ideal for high current applications of board area, the UEI25 series isolated DC/DC higher capacitive loads. Excellent ripple and noise
converter family offers ef? cient regulated DC power speci? cations assure compatibility to noise-sus-
??
Industry standard 0.96" x 1.1" x 0.32" open
for printed circuit board mounting. The 0.96" x 1.1" ceptible circuits. For systems requiring controlled
frame package and pinout
x 0.32" (24.4 x 27.9 x 8.1 mm) converter accepts a startup/shutdown, an external remote On/Off control
??
Input voltage range of 36-75 Vdc
2:1 input voltage range of 36 to 75 Volts DC, ideal may use a switch, transistor or digital logic.
for telecom equipment. The industry-standard pin- A wealth of self-protection features avoid both
??
3.3V, 5V, or 12Vdc ? xed output voltages
out ? ts larger 1" x 2" converters. The ? xed output converter and external circuit faults. These include
??
Isolation up to 2250 VDC (basic)
voltage is tightly regulated. Applications include input undervoltage lockout and overtemperature
??
Up to 25 Watts total output power with exten- small instruments, area-limited microcontrollers, shutdown. The outputs current limit using the
sive self-protection shutdown features data communications equipment, remote sensor ?hiccup? autorestart technique and the outputs are
systems, telephone equipment, vehicle and portable short-circuit protected. Additional features include
? ?
High ef? ciency synchronous recti? er forward
electronics. output overvoltage and reverse conduction elimina-
topology up to 91%
The UEI25 series includes full magnetic and tion. The high ef? ciency offers minimal heat buildup
? ?
Stable operation with no required external
optical isolation with Basic protection up to 2250 and ?no fan? operation.
components
Volts DC. For powering digital systems, the outputs
? ?
Usable -40 to 85?C temperature range (with
derating)
??Certi? ed to UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, EN60950-1 safety
approvals, 2nd edition
F1 +Vin (1) *TPMB UJPO +Vout (3)
Barrier
t4XJUDIJOH
External
t' JMUFST
On/Off
DC
Control Controller
Power
t$VSSFOU4FOTF
and Power
(6)
Source
SBOTGFS5
Open = On
Reference and
$MPTFE 0GG
Error Ampli?er
1 PTJUJWF
Trim (4)
MPHJD
-Vin (2)
-Vout (5)
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_UEI25W.B10 Page 1 of 24UEI25 Series
www.murata-ps.com
Single Output Isolated 25-Watt DC/DC Converters
Output (V) Current (A) Nominal Input (V)
3.3 7.5 48
Typical unit
55 48
12 2.1 48
FEATURES PRODUCT OVERVIEW
??
Cost effective small footprint DC/DC converter, Featuring a full 25 Watt output in one square inch offer fast settling to step transients and will accept
ideal for high current applications of board area, the UEI25 series isolated DC/DC higher capacitive loads. Excellent ripple and noise
converter family offers ef? cient regulated DC power speci? cations assure compatibility to noise-sus-
??
Industry standard 0.96" x 1.1" x 0.32" open
for printed circuit board mounting. The 0.96" x 1.1" ceptible circuits. For systems requiring controlled
frame package and pinout
x 0.32" (24.4 x 27.9 x 8.1 mm) converter accepts a startup/shutdown, an external remote On/Off control
??
Input voltage range of 36-75 Vdc
2:1 input voltage range of 36 to 75 Volts DC, ideal may use a switch, transistor or digital logic.
for telecom equipment. The industry-standard pin- A wealth of self-protection features avoid both
??
3.3V, 5V, or 12Vdc ? xed output voltages
out ? ts larger 1" x 2" converters. The ? xed output converter and external circuit faults. These include
??
Isolation up to 2250 VDC (basic)
voltage is tightly regulated. Applications include input undervoltage lockout and overtemperature
??
Up to 25 Watts total output power with exten- small instruments, area-limited microcontrollers, shutdown. The outputs current limit using the
sive self-protection shutdown features data communications equipment, remote sensor ?hiccup? autorestart technique and the outputs are
systems, telephone equipment, vehicle and portable short-circuit protected. Additional features include
? ?
High ef? ciency synchronous recti? er forward
electronics. output overvoltage and reverse conduction elimina-
topology up to 91%
The UEI25 series includes full magnetic and tion. The high ef? ciency offers minimal heat buildup
? ?
Stable operation with no required external
optical isolation with Basic protection up to 2250 and ?no fan? operation.
components
Volts DC. For powering digital systems, the outputs
? ?
Usable -40 to 85?C temperature range (with
derating)
??Certi? ed to UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, EN60950-1 safety
approvals, 2nd edition
F1 +Vin (1) *TPMB UJPO +Vout (3)
Barrier
t4XJUDIJOH
External
t' JMUFST
On/Off
DC
Control Controller
Power
t$VSSFOU4FOTF
and Power
(6)
Source
SBOTGFS5
Open = On
Reference and
$MPTFE 0GG
Error Ampli?er
1 PTJUJWF
Trim (4)
MPHJD
-Vin (2)
-Vout (5)
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_UEI25W.B10 Page 1 of 24UEI25 Series
Single Output Isolated 25-Watt DC/DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ? ?
Output Input
R/N (mVp-p) Regulation (Max.) IIN, IIN, Ef? ciency Package, C75
IOUT Total VIN min. full
VOUT (A, Power Nom. Range load load
Root Models ? (V) max) (W) Typ. ? Max. Line Load (V) (V) (mA) (A) Min. Typ. Case (inches) Case (mm) Pinout
UEI25-033-D48 ? 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% ?0.2% 48 36-75 30 0.57 89.0% 91% 0.96x1.1x0.32 24.4x27.9x8.1 P85
UEI25-120-D48 12 2.1 25.2 95 120 ?0.1% ?0.1% 48 36-75 20 0.6 86.0% 87.5% 0.96x1.1x0.32 24.4x27.9x8.1 P85
Notes:
? Please refer to the part number structure for additional options and complete order- Output capacitors are 1 ?F ceramic in parallel with 10 ?F electrolytic. The input cap
ing part numbers. is 4.7 ?F ceramic, low ESR.
? Ripple and Noise is shown at 20 MHz bandwidth. I/O caps are necessary for our test equipment and may not be needed for your ap-
? All speci? cations are at nominal line voltage and full load, +25 ?C. unless otherwise plication.
? Minimum load is 10% for rated speci? cations.
noted. See detailed speci? cations for full conditions.
PART NUMBER STRUCTURE
UEI25 - 033 - D48 P M Lx - C
Unipolar Output Isolated RoHS-6 Hazardous Substance Compliance
25-Watt Series (Does not claim EU RoHS exemption 7b, lead in solder)
Nominal Output Voltage Pin Length Option (through-hole only)
in Tenths of a Volt Blank = Std. pin length 0.25? (6.3mm)
L1 = 0.110? (2.79mm) ?
L2 = 0.145? (3.68mm) ?
Input Voltage Range Surface Mount Option
D48 = 36-75 Vdc Blank = Through-hole mount
M = Surface mount (MSL rating 2) ?
On/Off Control Logic:
P = Positive
N = Negative
? Special quantity order is required; samples available with standard pin length only.
? SMT (M) versions not available in sample quantities.
? Some model number combinations may not be available. See website or contact your local Murata sales representative.
www.murata-ps.com/support
MDC_UEI25W.B10 Page 2 of 24UEI25 Series
Single Output Isolated 25-Watt DC/DC Converters
FUNCTIONAL SPECIFICATIONS ? MODEL UEI25-033-D48
ABSOLUTE MAXIMUM RATINGS Conditions ? Minimum Typical/Nominal Maximum Units
Input Voltage, Continuous Full power operation 0 80 Vdc
Operating or non-operating, 100 mS max.
Input Voltage, Transient 0 100 Vdc
duration
Isolation Voltage Input to output 2250 Vdc
Input Reverse Polarity None, install external fuse None Vdc
On/Off Remote Control Power on or off, referred to -Vin 0 15 Vdc
Output Power 0 25.25 W
Output Current Current-limited, no damage, short-circuit protected 0 7.5 A
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 Speci? cations Table is not implied or recommended.
INPUT
Operating voltage range 36 48 75 Vdc
Recommended External Fuse Fast blow 1.5 A
Start-up threshold Rising input voltage 34 35.2 36 Vdc
Undervoltage shutdown Falling input voltage 32 34.0 35.2 Vdc
Overvoltage shutdown None Vdc
Reverse Polarity Protection None, install external fuse None Vdc
Internal Filter Type LC
Input current
Full Load Conditions Vin = nominal 0.58 0.60 A
Low Line Vin = minimum 0.79 0.81 A
Inrush Transient 0.05 A2-Sec.
Output in Short Circuit 50 100 mA
No Load Iout = minimum, unit=ON 75 100 mA
Standby Mode (Off, UV, OT) 12 mA
Measured at input with speci? ed ? lter 30 mA, RMS
Re? ected (back) ripple current ?
Pre-biased startup External output voltage < Vset Monotonic
GENERAL and SAFETY
Vin=48V, full load 87 89.5 %
Ef? ciency
Vin=36V, full load 86.5 87.5 %
Isolation
Isolation Voltage Input to output, continuous 2250 Vdc
Insulation Safety Rating basic
Isolation Resistance 10 Mohm
Isolation Capacitance 1000 pF
Certi? ed to UL-60950-1, CSA-C22.2 No.60950-1,
Safety Yes
IEC/EN60950-1, 2nd edition
Per MIL-HDBK-217F, ground benign,
6
Calculated MTBF TBD Hours x 10
Tambient=+30?C
Per Telcordia SR332, issue 1, class 3, ground
6
Calculated MTBF 2 Hours x 10
? xed, Tambient=+40?C
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency 300 330 360 KHz
Startup Time Power On to Vout regulated 50 mS
Startup Time Remote ON to Vout regulated 50 mS
50-75-50% load step, settling time to within
Dynamic Load Response 180 250 ?Sec
?2% of Vout
Dynamic load di/dt 2 A/?Sec
Dynamic Load Peak Deviation same as above ?30 ?100 mV
FEATURES and OPTIONS
Remote On/Off Control ?
"N" suf? x
Negative Logic, ON state ON = Ground pin or external voltage -0.7 1.2 V
Negative Logic, OFF state OFF = Pin open or external voltage 10 15 V
Control Current 1mA
"P" suf? x
Positive Logic, ON state ON = Pin open or external voltage 10 15 V
Positive Logic, OFF state OFF = Ground pin or external voltage -0.7 1.2 V
Control Current 1mA
www.murata-ps.com/support
MDC_UEI25W.B10 Page 3 of 24UEI25 Series
www.murata-ps.com
Single Output Isolated 25-Watt DC/DC Converters
Output (V) Current (A) Nominal Input (V)
3.3 7.5 48
Typical unit
55 48
12 2.1 48
FEATURES PRODUCT OVERVIEW
??
Cost effective small footprint DC/DC converter, Featuring a full 25 Watt output in one square inch offer fast settling to step transients and will accept
ideal for high current applications of board area, the UEI25 series isolated DC/DC higher capacitive loads. Excellent ripple and noise
converter family offers ef? cient regulated DC power speci? cations assure compatibility to noise-sus-
??
Industry standard 0.96" x 1.1" x 0.32" open
for printed circuit board mounting. The 0.96" x 1.1" ceptible circuits. For systems requiring controlled
frame package and pinout
x 0.32" (24.4 x 27.9 x 8.1 mm) converter accepts a startup/shutdown, an external remote On/Off control
??
Input voltage range of 36-75 Vdc
2:1 input voltage range of 36 to 75 Volts DC, ideal may use a switch, transistor or digital logic.
for telecom equipment. The industry-standard pin- A wealth of self-protection features avoid both
??
3.3V, 5V, or 12Vdc ? xed output voltages
out ? ts larger 1" x 2" converters. The ? xed output converter and external circuit faults. These include
??
Isolation up to 2250 VDC (basic)
voltage is tightly regulated. Applications include input undervoltage lockout and overtemperature
??
Up to 25 Watts total output power with exten- small instruments, area-limited microcontrollers, shutdown. The outputs current limit using the
sive self-protection shutdown features data communications equipment, remote sensor ?hiccup? autorestart technique and the outputs are
systems, telephone equipment, vehicle and portable short-circuit protected. Additional features include
? ?
High ef? ciency synchronous recti? er forward
electronics. output overvoltage and reverse conduction elimina-
topology up to 91%
The UEI25 series includes full magnetic and tion. The high ef? ciency offers minimal heat buildup
? ?
Stable operation with no required external
optical isolation with Basic protection up to 2250 and ?no fan? operation.
components
Volts DC. For powering digital systems, the outputs
? ?
Usable -40 to 85?C temperature range (with
derating)
??Certi? ed to UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, EN60950-1 safety
approvals, 2nd edition
F1 +Vin (1) *TPMB UJPO +Vout (3)
Barrier
t4XJUDIJOH
External
t' JMUFST
On/Off
DC
Control Controller
Power
t$VSSFOU4FOTF
and Power
(6)
Source
SBOTGFS5
Open = On
Reference and
$MPTFE 0GG
Error Ampli?er
1 PTJUJWF
Trim (4)
MPHJD
-Vin (2)
-Vout (5)
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_UEI25W.B10 Page 1 of 24UEI25 Series
www.murata-ps.com
Single Output Isolated 25-Watt DC/DC Converters
Output (V) Current (A) Nominal Input (V)
3.3 7.5 48
Typical unit
55 48
12 2.1 48
FEATURES PRODUCT OVERVIEW
??
Cost effective small footprint DC/DC converter, Featuring a full 25 Watt output in one square inch offer fast settling to step transients and will accept
ideal for high current applications of board area, the UEI25 series isolated DC/DC higher capacitive loads. Excellent ripple and noise
converter family offers ef? cient regulated DC power speci? cations assure compatibility to noise-sus-
??
Industry standard 0.96" x 1.1" x 0.32" open
for printed circuit board mounting. The 0.96" x 1.1" ceptible circuits. For systems requiring controlled
frame package and pinout
x 0.32" (24.4 x 27.9 x 8.1 mm) converter accepts a startup/shutdown, an external remote On/Off control
??
Input voltage range of 36-75 Vdc
2:1 input voltage range of 36 to 75 Volts DC, ideal may use a switch, transistor or digital logic.
for telecom equipment. The industry-standard pin- A wealth of self-protection features avoid both
??
3.3V, 5V, or 12Vdc ? xed output voltages
out ? ts larger 1" x 2" converters. The ? xed output converter and external circuit faults. These include
??
Isolation up to 2250 VDC (basic)
voltage is tightly regulated. Applications include input undervoltage lockout and overtemperature
??
Up to 25 Watts total output power with exten- small instruments, area-limited microcontrollers, shutdown. The outputs current limit using the
sive self-protection shutdown features data communications equipment, remote sensor ?hiccup? autorestart technique and the outputs are
systems, telephone equipment, vehicle and portable short-circuit protected. Additional features include
? ?
High ef? ciency synchronous recti? er forward
electronics. output overvoltage and reverse conduction elimina-
topology up to 91%
The UEI25 series includes full magnetic and tion. The high ef? ciency offers minimal heat buildup
? ?
Stable operation with no required external
optical isolation with Basic protection up to 2250 and ?no fan? operation.
components
Volts DC. For powering digital systems, the outputs
? ?
Usable -40 to 85?C temperature range (with
derating)
??Certi? ed to UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, EN60950-1 safety
approvals, 2nd edition
F1 +Vin (1) *TPMB UJPO +Vout (3)
Barrier
t4XJUDIJOH
External
t' JMUFST
On/Off
DC
Control Controller
Power
t$VSSFOU4FOTF
and Power
(6)
Source
SBOTGFS5
Open = On
Reference and
$MPTFE 0GG
Error Ampli?er
1 PTJUJWF
Trim (4)
MPHJD
-Vin (2)
-Vout (5)
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_UEI25W.B10 Page 1 of 24UEI25 Series
Single Output Isolated 25-Watt DC/DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ? ?
Output Input
R/N (mVp-p) Regulation (Max.) IIN, IIN, Ef? ciency Package, C75
IOUT Total VIN min. full
VOUT (A, Power Nom. Range load load
Root Models ? (V) max) (W) Typ. ? Max. Line Load (V) (V) (mA) (A) Min. Typ. Case (inches) Case (mm) Pinout
UEI25-033-D48 ? 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% ?0.2% 48 36-75 30 0.57 89.0% 91% 0.96x1.1x0.32 24.4x27.9x8.1 P85
UEI25-120-D48 12 2.1 25.2 95 120 ?0.1% ?0.1% 48 36-75 20 0.6 86.0% 87.5% 0.96x1.1x0.32 24.4x27.9x8.1 P85
Notes:
? Please refer to the part number structure for additional options and complete order- Output capacitors are 1 ?F ceramic in parallel with 10 ?F electrolytic. The input cap
ing part numbers. is 4.7 ?F ceramic, low ESR.
? Ripple and Noise is shown at 20 MHz bandwidth. I/O caps are necessary for our test equipment and may not be needed for your ap-
? All speci? cations are at nominal line voltage and full load, +25 ?C. unless otherwise plication.
? Minimum load is 10% for rated speci? cations.
noted. See detailed speci? cations for full conditions.
PART NUMBER STRUCTURE
UEI25 - 033 - D48 P M Lx - C
Unipolar Output Isolated RoHS-6 Hazardous Substance Compliance
25-Watt Series (Does not claim EU RoHS exemption 7b, lead in solder)
Nominal Output Voltage Pin Length Option (through-hole only)
in Tenths of a Volt Blank = Std. pin length 0.25? (6.3mm)
L1 = 0.110? (2.79mm) ?
L2 = 0.145? (3.68mm) ?
Input Voltage Range Surface Mount Option
D48 = 36-75 Vdc Blank = Through-hole mount
M = Surface mount (MSL rating 2) ?
On/Off Control Logic:
P = Positive
N = Negative
? Special quantity order is required; samples available with standard pin length only.
? SMT (M) versions not available in sample quantities.
? Some model number combinations may not be available. See website or contact your local Murata sales representative.
www.murata-ps.com/support
MDC_UEI25W.B10 Page 2 of 24UEI25 Series
www.murata-ps.com
Single Output Isolated 25-Watt DC/DC Converters
Output (V) Current (A) Nominal Input (V)
3.3 7.5 48
Typical unit
55 48
12 2.1 48
FEATURES PRODUCT OVERVIEW
??
Cost effective small footprint DC/DC converter, Featuring a full 25 Watt output in one square inch offer fast settling to step transients and will accept
ideal for high current applications of board area, the UEI25 series isolated DC/DC higher capacitive loads. Excellent ripple and noise
converter family offers ef? cient regulated DC power speci? cations assure compatibility to noise-sus-
??
Industry standard 0.96" x 1.1" x 0.32" open
for printed circuit board mounting. The 0.96" x 1.1" ceptible circuits. For systems requiring controlled
frame package and pinout
x 0.32" (24.4 x 27.9 x 8.1 mm) converter accepts a startup/shutdown, an external remote On/Off control
??
Input voltage range of 36-75 Vdc
2:1 input voltage range of 36 to 75 Volts DC, ideal may use a switch, transistor or digital logic.
for telecom equipment. The industry-standard pin- A wealth of self-protection features avoid both
??
3.3V, 5V, or 12Vdc ? xed output voltages
out ? ts larger 1" x 2" converters. The ? xed output converter and external circuit faults. These include
??
Isolation up to 2250 VDC (basic)
voltage is tightly regulated. Applications include input undervoltage lockout and overtemperature
??
Up to 25 Watts total output power with exten- small instruments, area-limited microcontrollers, shutdown. The outputs current limit using the
sive self-protection shutdown features data communications equipment, remote sensor ?hiccup? autorestart technique and the outputs are
systems, telephone equipment, vehicle and portable short-circuit protected. Additional features include
? ?
High ef? ciency synchronous recti? er forward
electronics. output overvoltage and reverse conduction elimina-
topology up to 91%
The UEI25 series includes full magnetic and tion. The high ef? ciency offers minimal heat buildup
? ?
Stable operation with no required external
optical isolation with Basic protection up to 2250 and ?no fan? operation.
components
Volts DC. For powering digital systems, the outputs
? ?
Usable -40 to 85?C temperature range (with
derating)
??Certi? ed to UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, EN60950-1 safety
approvals, 2nd edition
F1 +Vin (1) *TPMB UJPO +Vout (3)
Barrier
t4XJUDIJOH
External
t' JMUFST
On/Off
DC
Control Controller
Power
t$VSSFOU4FOTF
and Power
(6)
Source
SBOTGFS5
Open = On
Reference and
$MPTFE 0GG
Error Ampli?er
1 PTJUJWF
Trim (4)
MPHJD
-Vin (2)
-Vout (5)
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_UEI25W.B10 Page 1 of 24UEI25 Series
www.murata-ps.com
Single Output Isolated 25-Watt DC/DC Converters
Output (V) Current (A) Nominal Input (V)
3.3 7.5 48
Typical unit
55 48
12 2.1 48
FEATURES PRODUCT OVERVIEW
??
Cost effective small footprint DC/DC converter, Featuring a full 25 Watt output in one square inch offer fast settling to step transients and will accept
ideal for high current applications of board area, the UEI25 series isolated DC/DC higher capacitive loads. Excellent ripple and noise
converter family offers ef? cient regulated DC power speci? cations assure compatibility to noise-sus-
??
Industry standard 0.96" x 1.1" x 0.32" open
for printed circuit board mounting. The 0.96" x 1.1" ceptible circuits. For systems requiring controlled
frame package and pinout
x 0.32" (24.4 x 27.9 x 8.1 mm) converter accepts a startup/shutdown, an external remote On/Off control
??
Input voltage range of 36-75 Vdc
2:1 input voltage range of 36 to 75 Volts DC, ideal may use a switch, transistor or digital logic.
for telecom equipment. The industry-standard pin- A wealth of self-protection features avoid both
??
3.3V, 5V, or 12Vdc ? xed output voltages
out ? ts larger 1" x 2" converters. The ? xed output converter and external circuit faults. These include
??
Isolation up to 2250 VDC (basic)
voltage is tightly regulated. Applications include input undervoltage lockout and overtemperature
??
Up to 25 Watts total output power with exten- small instruments, area-limited microcontrollers, shutdown. The outputs current limit using the
sive self-protection shutdown features data communications equipment, remote sensor ?hiccup? autorestart technique and the outputs are
systems, telephone equipment, vehicle and portable short-circuit protected. Additional features include
? ?
High ef? ciency synchronous recti? er forward
electronics. output overvoltage and reverse conduction elimina-
topology up to 91%
The UEI25 series includes full magnetic and tion. The high ef? ciency offers minimal heat buildup
? ?
Stable operation with no required external
optical isolation with Basic protection up to 2250 and ?no fan? operation.
components
Volts DC. For powering digital systems, the outputs
? ?
Usable -40 to 85?C temperature range (with
derating)
??Certi? ed to UL 60950-1, CAN/CSA-C22.2 No.
60950-1, IEC60950-1, EN60950-1 safety
approvals, 2nd edition
F1 +Vin (1) *TPMB UJPO +Vout (3)
Barrier
t4XJUDIJOH
External
t' JMUFST
On/Off
DC
Control Controller
Power
t$VSSFOU4FOTF
and Power
(6)
Source
SBOTGFS5
Open = On
Reference and
$MPTFE 0GG
Error Ampli?er
1 PTJUJWF
Trim (4)
MPHJD
-Vin (2)
-Vout (5)
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_UEI25W.B10 Page 1 of 24UEI25 Series
Single Output Isolated 25-Watt DC/DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ? ?
Output Input
R/N (mVp-p) Regulation (Max.) IIN, IIN, Ef? ciency Package, C75
IOUT Total VIN min. full
VOUT (A, Power Nom. Range load load
Root Models ? (V) max) (W) Typ. ? Max. Line Load (V) (V) (mA) (A) Min. Typ. Case (inches) Case (mm) Pinout
UEI25-033-D48 ? 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% ?0.2% 48 36-75 30 0.57 89.0% 91% 0.96x1.1x0.32 24.4x27.9x8.1 P85
UEI25-120-D48 12 2.1 25.2 95 120 ?0.1% ?0.1% 48 36-75 20 0.6 86.0% 87.5% 0.96x1.1x0.32 24.4x27.9x8.1 P85
Notes:
? Please refer to the part number structure for additional options and complete order- Output capacitors are 1 ?F ceramic in parallel with 10 ?F electrolytic. The input cap
ing part numbers. is 4.7 ?F ceramic, low ESR.
? Ripple and Noise is shown at 20 MHz bandwidth. I/O caps are necessary for our test equipment and may not be needed for your ap-
? All speci? cations are at nominal line voltage and full load, +25 ?C. unless otherwise plication.
? Minimum load is 10% for rated speci? cations.
noted. See detailed speci? cations for full conditions.
PART NUMBER STRUCTURE
UEI25 - 033 - D48 P M Lx - C
Unipolar Output Isolated RoHS-6 Hazardous Substance Compliance
25-Watt Series (Does not claim EU RoHS exemption 7b, lead in solder)
Nominal Output Voltage Pin Length Option (through-hole only)
in Tenths of a Volt Blank = Std. pin length 0.25? (6.3mm)
L1 = 0.110? (2.79mm) ?
L2 = 0.145? (3.68mm) ?
Input Voltage Range Surface Mount Option
D48 = 36-75 Vdc Blank = Through-hole mount
M = Surface mount (MSL rating 2) ?
On/Off Control Logic:
P = Positive
N = Negative
? Special quantity order is required; samples available with standard pin length only.
? SMT (M) versions not available in sample quantities.
? Some model number combinations may not be available. See website or contact your local Murata sales representative.
www.murata-ps.com/support
MDC_UEI25W.B10 Page 2 of 24UEI25 Series
Single Output Isolated 25-Watt DC/DC Converters
FUNCTIONAL SPECIFICATIONS ? MODEL UEI25-033-D48
ABSOLUTE MAXIMUM RATINGS Conditions ? Minimum Typical/Nominal Maximum Units
Input Voltage, Continuous Full power operation 0 80 Vdc
Operating or non-operating, 100 mS max.
Input Voltage, Transient 0 100 Vdc
duration
Isolation Voltage Input to output 2250 Vdc
Input Reverse Polarity None, install external fuse None Vdc
On/Off Remote Control Power on or off, referred to -Vin 0 15 Vdc
Output Power 0 25.25 W
Output Current Current-limited, no damage, short-circuit protected 0 7.5 A
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 Speci? cations Table is not implied or recommended.
INPUT
Operating voltage range 36 48 75 Vdc
Recommended External Fuse Fast blow 1.5 A
Start-up threshold Rising input voltage 34 35.2 36 Vdc
Undervoltage shutdown Falling input voltage 32 34.0 35.2 Vdc
Overvoltage shutdown None Vdc
Reverse Polarity Protection None, install external fuse None Vdc
Internal Filter Type LC
Input current
Full Load Conditions Vin = nominal 0.58 0.60 A
Low Line Vin = minimum 0.79 0.81 A
Inrush Transient 0.05 A2-Sec.
Output in Short Circuit 50 100 mA
No Load Iout = minimum, unit=ON 75 100 mA
Standby Mode (Off, UV, OT) 12 mA
Measured at input with speci? ed ? lter 30 mA, RMS
Re? ected (back) ripple current ?
Pre-biased startup External output voltage < Vset Monotonic
GENERAL and SAFETY
Vin=48V, full load 87 89.5 %
Ef? ciency
Vin=36V, full load 86.5 87.5 %
Isolation
Isolation Voltage Input to output, continuous 2250 Vdc
Insulation Safety Rating basic
Isolation Resistance 10 Mohm
Isolation Capacitance 1000 pF
Certi? ed to UL-60950-1, CSA-C22.2 No.60950-1,
Safety Yes
IEC/EN60950-1, 2nd edition
Per MIL-HDBK-217F, ground benign,
6
Calculated MTBF TBD Hours x 10
Tambient=+30?C
Per Telcordia SR332, issue 1, class 3, ground
6
Calculated MTBF 2 Hours x 10
? xed, Tambient=+40?C
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency 300 330 360 KHz
Startup Time Power On to Vout regulated 50 mS
Startup Time Remote ON to Vout regulated 50 mS
50-75-50% load step, settling time to within
Dynamic Load Response 180 250 ?Sec
?2% of Vout
Dynamic load di/dt 2 A/?Sec
Dynamic Load Peak Deviation same as above ?30 ?100 mV
FEATURES and OPTIONS
Remote On/Off Control ?
"N" suf? x
Negative Logic, ON state ON = Ground pin or external voltage -0.7 1.2 V
Negative Logic, OFF state OFF = Pin open or external voltage 10 15 V
Control Current 1mA
"P" suf? x
Positive Logic, ON state ON = Pin open or external voltage 10 15 V
Positive Logic, OFF state OFF = Ground pin or external voltage -0.7 1.2 V
Control Current 1mA
www.murata-ps.com/support
MDC_UEI25W.B10 Page 3 of 24