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UEI30-120-Q12P-C

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
www.murata-ps.com/support
UEI30 Series
30W Isolated Wide-Range DC-DC Converters
MDC_UEI Series 30W.B02 Page 16 of 18
There are two CAUTIONs for the On/Off Control:
CAUTION: While it is possible to control the On/Off with external logic if you
carefully observe the voltage levels, the preferred circuit is either an open
drain/open collector transistor or a relay (which can thereupon be controlled by
logic). The On/Off prefers to be set at approx. +15V (open pin) for the ON state,
assuming positive logic.
CAUTION: Do not apply voltages to the On/Off pin when there is no input
power voltage. Otherwise the converter may be permanently damaged.
Figure 7. Driving the On/Off Control Pin (suggested circuit)
1
3
ON/OFF
CONTROL
-VIN
+VCC
Reference Description
L1 500μH, 4.1A
C8 Electrolytic Capacitor 100μfd, 100V
C1, C2, C3 C4, C5, C6, C7 3.3μfd, 50V
Figure 8. Conducted Emissions Test Circuit
48 Vdc in,
MODEL# UEI30-050-Q48N-C
30W
5 Vout,
6 Amps
V+
V-
Vin -
Vout -
Vout +Vin +
Load
Resistive
UUT
Load
Resistive
inside a
metal
L1
container
C7
C4
C5
C6
C2C1 C3
C8
Graph 1. Conducted emissions performance with fi lter, Negative Line, CISPR 22,
Class B, full load, for UEI30-033-Q48N-C
dBμV
80
-20
-10
0
10
20
30
40
50
60
70
MHz
30.0
0.15 1.0
10.0
CONAV
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. Please refer to the fundamental switching frequency. All of this
information is listed in the Product Specifi cations. An external discrete fi lter is
installed and the circuit diagram is shown below.
[1] Conducted Emissions Parts List
[2] Conducted Emissions Test Equipment Used
Rohde & Schwarz EMI Test Receiver (9KHz – 1000MHz) ESPC
Rohde & Schwarz Software ESPC-1 Ver. 2.20
OHMITE 25W – 1 Ohm resistor combinations
DC Source Programmable DC Power Supply Model 62012P-100-50
[3] Conducted Emissions Test Results
www.murata-ps.com/support
UEI30 Series
30W Isolated Wide-Range DC-DC Converters
MDC_UEI Series 30W.B02 Page 17 of 18
[4] Layout Recommendations
Most applications can use the fi ltering which is already installed inside the
converter or with the addition of the recommended external capacitors. For
greater emissions suppression, consider additional fi lter components and/or
shielding. Emissions performance will depend on the user’s PC board layout,
the chassis shielding environment and choice of external components.
Since many factors affect both the amplitude and spectra of emissions, we
recommend using an engineer who is experienced at emissions suppression.
Graph 3. Conducted emissions performance with fi lter, Negative Line, CISPR 22,
Class B, full load, for UEI30-120-Q12N-C
dBμV
80
-20
-10
0
10
20
30
40
50
60
70
MHz
30.00.15 1.0 10.0
CONAV
Graph 6. Conducted emissions performance with fi lter, Negative Line, CISPR 22,
Class B, full load, for UEI30-150-Q48N-C
dBμV
90
-10
0
10
20
30
40
50
60
70
80
MHz
30.00.15 1.0 10.0
CONAV
Graph 2. Conducted emissions performance with fi lter, Negative Line, CISPR 22,
Class B, 5.43A @ 48Vin, for UEI30-050-Q48N-C
dBμV
80
-20
-10
0
10
20
30
40
50
60
70
MHz
30.00.15 1.0 10.0
CONAV
Graph 5. Conducted emissions performance with fi lter, Negative Line, CISPR 22,
Class B, full load, for UEI30-150-Q12N-C
dBμV
80
-20
-10
0
10
20
30
40
50
60
70
MHz
30.00.15 1.0 10.0
CONAV
Graph 4. Conducted emissions performance with fi lter, Negative Line, CISPR 22,
Class B, full load, for UEI30-120-Q48N-C
dBμV
80
-20
-10
0
10
20
30
40
50
60
70
MHz
30.00.15 1.0 10.0
CONAV
www.murata-ps.com/support
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without
notice. © 2015 Murata Power Solutions, Inc.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfi eld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
UEI30 Series
30W Isolated Wide-Range DC-DC Converters
MDC_UEI Series 30W.B02 Page 18 of 18
Mean Time Before Failure (MTBF) Table
These fi gures use a standard MTBF probability calculation as an indication of component parts stress and life derating. The calculaton is based on separate MTBF
values for all internal parts in addition to stated environmental conditions. Two MTBF values are presented. The Telcordia method is widely used in industry, partic-
ularly telecom. The United States MIL-HDBK method is for military and industrial applications. Please refer to a qualifi ed reliability engineer for more background.
Model Number MTBF (Hours) Method [1,2]
UEI30-033-Q12N-C 2,676,902 Telcordia
UEI30-033-Q12N-C 2,123,124 MIL-HDBK
UEI30-033-Q12P-C 2,733,781 Telcordia
UEI30-033-Q12P-C 2,142,206 MIL-HDBK
UEI30-033-Q48N-C 3,416,592 Telcordia
UEI30-033-Q48N-C 3,172,548 MIL-HDBK
UEI30-033-Q48P-C 3,427,027 Telcordia
UEI30-033-Q48P-C 3,193,652 MIL-HDBK
UEI30-050-Q12N-C 2,531,509 Telcordia
UEI30-050-Q12N-C 2,207,508 MIL-HDBK
UEI30-050-Q12P-C 2,554,127 Telcordia
UEI30-050-Q12P-C 2,229,031 MIL-HDBK
UEI30-120-Q48N-C 3,072,461 Telcordia
UEI30-120-Q48N-C 2,510,927 MIL-HDBK
UEI30-120-Q48P-C 2,900,319 Telcordia
UEI30-120-Q48P-C 2,495,846 MIL-HDBK
UEI30-150-Q48N-C 2,833,366 Telcordia
UEI30-150-Q48N-C 2,408,836 MIL-HDBK
UEI30-150-Q48P-C 2,776,615 Telcordia
UEI30-150-Q48P-C 2,421,938 MIL-HDBK
Notes:
[1] Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method
1, Case 3, ISSUE 2, ground fi xed controlled conditions, Tambient=+25°C, full output load,
natural air convection.
[2] Mean Time Before Failure is calculated using MIL-HDBK-217FN2, GB ground benign,
Tambient=+25°C, full output load, natural air convection.
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 ca-
tions 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: For Sn/Pb based solders:
Maximum Preheat Temperature 115° C. Maximum Preheat Temperature 105° C.
Maximum Pot Temperature 270° C. Maximum Pot Temperature 250° C.
Maximum Solder Dwell Time 7 seconds Maximum Solder Dwell Time 6 seconds
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

UEI30-120-Q12P-C

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Description:
Isolated DC/DC Converters 30W 24Vin 12Vout 2.5A Pos Polarity
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