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PRODUCT OVERVIEW
Featuring a full 15 Watt output in one square inch of board area, the BEI-15 series isolated DC/ DC converter family offers efficient regulated DC power for printed circuit board mounting. The wide range 4:1 inputs on the 0.96" x 1.1" x 0.35" (24.4 x 27.9 x 8.9 mm) converter are either 9 to 36 Volts DC (Q12 models) or 18 to 75 Volts DC (Q48 models), ideal for battery-powered and telecom equipment. The industry-standard pinout fits larger 1" x 2" converters. Fixed output voltages of 5, 12 or 15 VDC are regulated to within 0.25%. Applications include small instruments, arealimited microcontrollers, data communications equipment, remote sensor systems, vehicle and portable electronics. The BEI-15 series includes full magnetic and optical isolation with Basic protection up to
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
Typical unit
FEATURES
Small footprint DC/DC converter, ideal for high current applications Industry standard 0.96" x 1.1" X 0.35" open frame package and pinout Wide range input voltages 9-36 and 18-75 Vdc Bipolar 5V, 12V and 15V outputs Up to 15 Watts or greater total output power with overtemperature shutdown Isolation up to 2250 VDC (basic), Q48 models High efficiency synchronous rectifier forward topology Usable -40 to 85C temperature range (with derating) Assembly and attachment for RoHS standards Extensive self-protection shut down features Meets UL 60950-1, CAN/CSAC22.2 No. 60950-1, IEC60950-1, EN60950-1 safety approvals (2nd Edition)
2250 Volts DC (Q48 models) and 2000 VDC (Q12 models). For powering digital systems, the outputs offer fast settling to step transients and will accept higher capacitive loads. Excellent ripple and noise specifications assure compatibility to noise-susceptible 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 elimination. The high efficiency offers minimal heat buildup and "no fan" operation.
Contents Description, Photograph, Connection Diagram Ordering Guide, Model Numbering, Soldering Guidelines Mechanical Specs, Input/Output Pinout Detailed Electrical Specifications Application Notes Performance Data
Page 1 2 3 4 6 8
CONNECTION DIAGRAM
F1 +Vin (1) Barrier External DC Power Source +Vout (6)
On/Off Control (3)
Controller and Power
Common (5)
-Vout (4) Open = On Reference and Error Amplifier
polarity) -Vin (2)
Typical topology is shown.
For full details go to www.murata-ps.com/rohs
Murata Power Solutions recommends a fuse at F1.
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MDC_BEI15W.A04 Page 1 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
PERFORMANCE SPECIFICATIONS AND ORDERING GUIDE Output R/N (mVp-p) Root Models BEI15-050-Q12 BEI15-050-Q48 BEI15-120-Q12 BEI15-120-Q48 BEI15-150-Q12 BEI15-150-Q48 IOUT Total VOUT (mA, Power Typ. (V) max.) (W) 5 5 12 12 15 15 1500 1500 625 625 500 500 15 15 15 15 15 15 60 60 80 80 100 100 Regulation (Max.) Input IIN = no VIN Nom. Range load (V) (V) (mA) 24 48 24 48 24 48 9-36 18-75 9-36 18-75 9-36 18-75 90 50 95 50 100 50 IIN = full load (mA) 740 374 730 370 740 360 Efficiency Open Frame Package - C69 Case Pinout
Max. 100 100 120 120 150 150
Line
Load
Min. 82.8% 82% 82% 84% 83% 84.5%
Typ. 84% 83.5% 86% 85.5% 84% 86%
(inches)
(mm)
0.25% 0.25% 0.25% 0.25% 0.25% 0.25% 0.25% 0.25% 0.25% 0.25% 0.25% 0.25%
0.96x1.1x0.35
24.4x27.9x8.9
P74
Please refer to the part number structure for additional options and complete ordering part numbers. The minimum output load for the BEI-15W series is 10% of maximum current to meet published specifications. The converter will not be damaged by less than 10% load but some specs may degrade slightly. All specifications are at nominal line voltage and full load, +25 deg.C. unless otherwise noted. See detailed specifications and notes for full conditions.
Output capacitors are 1 F ceramic in parallel with 10 F electrolytic. The input cap is 100 F, low ESR. I/O caps are necessary for our test equipment and may not be needed for your application. RoHS-6 compliance does not claim EU RoHS exemption 7b (lead in solder).
PART NUMBER STRUCTURE
BEI15 - 050 - Q12 P Lx - C
Bipolar Wide Input 15-Watt Series Nominal Output Voltage in Tenths of a Volt Input Voltage Range Q12 = 9-36V Q48 = 18-75V
RoHS-6 Hazardous Substance Compliance (note 4)
Pin Length Option Blank = Std. pin length 0.25 (6.3mm) L1 = 0.110 (2.79mm) L2 = 0.145 (3.68mm) On/Off Control Polarity: P = Positive N = Negative
Note: Some model number combinations may not be available. Contact Murata Power Solutions.
Soldering Guidelines
Murata Power Solutions recommends the 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.
Wave Solder Operations for through-hole mounted products (THMT)
For Sn/Ag/Cu based solders: Maximum Preheat Temperature Maximum Pot Temperature Maximum Solder Dwell Time For Sn/Pb based solders: Maximum Preheat Temperature Maximum Pot Temperature Maximum Solder Dwell Time 105 C. 250 C. 6 seconds 115 C. 270 C. 7 seconds
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MDC_BEI15W.A04 Page 2 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
MECHANICAL SPECIFICATIONS, OPEN FRAME
TOP VIEW
Dimensions are in inches (mm shown for ref. only).
Case 69
Third Angle Projection
24.4 0.96 PIN #1
20.1 0.79
Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 1
27.9 1.10
Components are shown for reference only.
INPUT/OUTPUT CONNECTIONS Pin Function 1 2 Positive Vin Negative Vin On/Off Control * Negative Vout Common Return Positive Vout
SIDE VIEW 8.9 0.35 MAX SEATING PLANE 0.040 0.002 PIN WITH 0.071 0.002 SHOULDER 6X AT PINS 1-6
3 4 5 6
*The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) polarity.
Some competitive units may use different pin numbers; however, the BEI is plug compatible. Follow the pin FUNCTION when laying out your PC board.
BOTTOM VIEW (PIN SIDE) END VIEW 20.32 0.800 C L 2.54 0.100 #6 5.08 0.200 #1 #2 #3 C L 10.16 0.400 #4 6.3 0.25
Standard pin length is shown. Please refer to the Ordering Guide for alternate pin lengths.
0.475 REF
10.16 0.400 C L 10.16 0.400
#5
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MDC_BEI15W.A04 Page 3 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
Performance and Functional Specifications (Specs are typical unless noted)
INPUT CHARACTERISTICS Input voltage range Start-up threshold, Volts typ. Undervoltage shutdown, Volts Overvoltage shutdown, Volts Reflected (back) ripple current mA pk-pk Input current Full load conditions Inrush transient, A2sec Output short circuit, mA Output at min. load, mA Low line (Vin=min.), Amps Standby mode, mA (Off, UV, OT shutdown) Recommended fuse, Amps Internal input filter type Reverse polarity protection Remote On/Off Control Positive logic ("P" model suffix) BEI15-050-Q12 9.0 8.5 5 BEI15-050-Q48 17.0 16.0 30 BEI15-120-Q12 BEI15-120-Q48 See ordering guide 9.5 17.0 8.4 16.2 none 30 30 See ordering guide 0.05 0.05 50 50 95 50 2.01 0.97 1 1 4 2 Capacitive None, install external fuse BEI15-150-Q12 8.9 8.4 5 BEI15-150-Q48 17.0 16.0 30
0.05 50 90 2.03 25 4
0.05 50 50 1.0 1 2
0.05 50 30 1.97 1 4
0.05 50 50 0.96 1 2
OFF=Gnd pin or -0.7 to +0.8V max. ON=open pin or +10 to +15V max. OFF=open pin or +10 to +15V max. ON=Gnd pin or -0.7 to +0.8V max. 1 BEI15-050-Q12 BEI15-050-Q48 BEI15-120-Q12 BEI15-120-Q48 BEI15-150-Q12 BEI15-150-Q48
Negative logic ("N" model suffix)
On/Off Current, mA max. OUTPUT CHARACTERISTICS Voltage output range Voltage output accuracy, % of Vnom. (50% load) Temperature coefficient, % of Vout range/C Minimum loading, percent of full power Ripple/noise (20 MHz bandwidth) Line/Load regulation Efficiency Capacitive loading, F max., low ESR <0.02 max., resistive load Overvoltage protection, Volts (hiccup auto restart after fault removal) OV protection method Isolation voltage Input to Output, Volts DC min. Isolation resistance, M min. Isolation capacitance, pF Isolation safety rating Miscellaneous Current limit inception, Amps (Vout actual 98% of Vnom.) after warmup Short circuit protection method Short circuit current, Amps max. Short circuit duration (output shorted to ground) 500 6.5 500 7
See ordering guide 1 0.02 10 See ordering guide
150 15.8
150 16
100 18
100 20
Magnetic feedback 2000 10 1000 2250 10 1000 2000 10 600 Basic insulation 2250 10 700 2000 10 1000 2250 10 1000
2.6
2.5
1
1.1
0.9
0.9
Current limiting, hiccup autorestart 0.3 Continuous
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MDC_BEI15W.A04 Page 4 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
DYNAMIC CHARACTERISTICS Start-up time, mS, max. Vin to Vout regulated, mS, max. (Remote On/Off to Vout regulated) Switching frequency, KHz Calculated MTBF, hours Operating temperature range (Ambient, natural convection, with derating, vertical mount). See Derating graphs. No derating Storage temperature range Thermal protection/shutdown, C (measured at PWM) Relative humidity, non-condensing PHYSICAL CHARACTERISTICS Outline dimensions Pin material Pin diameter Pin Finish Weight, ounces (grams) Electromagnetic interference (requires external filter) Flammability rating Safety (designed to meet) See mechanical specs Copper alloy 0.040 inches 1.016 mm Gold plate over nickel underplate 0.352 (10) 0.352 (10) Meets EN55022 and CISPR22 with external filter UL 94V-0 UL/cUL 60950-1 CSA-C22.2 No.60950-1 IEC/EN 60950-1 BEI15-050-Q12 50 50 350 BEI15-050-Q48 50 50 305 BEI15-120-Q12 50 50 300 >2000000 BEI15-120-Q48 50 60 320 BEI15-150-Q12 50 50 330 BEI15-150-Q48 50 50 320
-40 to +85C -40 to +70C -55 to +125C 130 To +85C/85%
0.352 (10)
0.352 (10)
0.32 (9.07)
0.32 (9.07)
ABSOLUTE MAXIMUM RATINGS Input Voltage Q12 models Volts, max.,continuous 36 Volts, transient 100 mS 50 Q48 models Volts, max.,continuous 75 Volts, transient 100 mS 100 On/Off Control, referred to -Vin Volts, min. -0.3 Volts, max. 15 Input reverse polarity protection None, install external fuse Output Current, sustained short circuit Current-limited, see specs Storage Temperature Range min. C. -55 max. C. +125 Lead Temperature, deg.C. max.(soldering, ten seconds) See soldering guidelines
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MDC_BEI15W.A04 Page 5 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
APPLICATION 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. For safety agency approvals, install the converter in compliance with the end-user safety standard. Input Under-Voltage Shutdown and Start-Up Threshold Under normal start-up conditions, converters will not begin to regulate properly until the rising input voltage exceeds and remains at the Start-Up Threshold Voltage (see Specifications). Once operating, converters will not turn off until the input voltage drops below the Under-Voltage Shutdown Limit. Subsequent restart will not occur until the input voltage rises again above the Start-Up Threshold. This built-in hysteresis prevents any unstable on/off operation at a single input voltage. Users should be aware however of input sources near the Under-Voltage Shutdown whose voltage decays as input current is consumed (such as poorly regulated capacitor inputs), the converter shuts off and then restarts as the external capacitor recharges. Such situations could oscillate. To prevent this, make sure the operating input voltage is well above the UV Shutdown voltage AT ALL TIMES. Start-Up Delay Assuming that the output current is set at the rated maximum, the Vin to Vout Start-Up Delay (see Specifications) is the time interval between the point when the rising input voltage crosses the Start-Up Threshold and the fully loaded regulated output voltage enters and remains within its specified regulation band. Actual measured times will vary with input source impedance, external input capacitance, input voltage slew rate and final value of the input voltage as it appears at the converter. These converters include a soft start circuit to moderate the duty cycle of the PWM controller at power up, thereby limiting the input inrush current. The On/Off Remote Control interval from inception to Vout regulated assumes that the converter already has its input voltage stabilized above the Start-Up Threshold before the On command. The interval is measured from the On command until the output enters and remains within its specified accuracy band. The specification assumes that the output is fully loaded at maximum rated current. Recommended Input Filtering The user must assure that the input source has low AC impedance to provide dynamic stability and that the input supply has little or no inductive content, including long distributed wiring to a remote power supply. The converter will operate with no additional external capacitance if these conditions are met. For best performance, we recommend installing a low-ESR capacitor immediately adjacent to the converter's input terminals. The capacitor should be a ceramic type such as the Murata GRM32 series or a polymer type. Initial
suggested capacitor values are 10 to 22 F, rated at twice the expected maximum input voltage. Make sure that the input terminals do not go below the undervoltage shutdown voltage at all times. More input bulk capacitance may be added in parallel (either electrolytic or tantalum) if needed. Recommended Output Filtering The converter will achieve its rated output ripple and noise with no additional external capacitor. However, the user may install more external output capacitance to reduce the ripple even further or for improved dynamic response. Again, use low-ESR ceramic (Murata GRM32 series) or polymer capacitors. Initial values of 10 to 47 F may be tried, either single or multiple capacitors in parallel. Mount these close to the converter. Measure the output ripple under your load conditions. Use only as much capacitance as required to achieve your ripple and noise objectives. Excessive capacitance can make step load recovery sluggish or possibly introduce instability. Do not exceed the maximum rated output capacitance listed in the specifications. Input Ripple Current and Output Noise All models in this converter series are tested and specified for input reflected ripple current and output noise using designated external input/output components, circuits and layout as shown in the figures below. The Cbus and Lbus components simulate a typical DC voltage bus. Please note that the values of Cin, Lbus and Cbus may vary according to the specific converter model.
TO OSCILLOSCOPE
CURRENT PROBE +INPUT LBUS CBUS CIN
VIN
+ - + -
-INPUT CIN = 2 x 100F, ESR < 700m @ 100kHz CBUS = 1000F, ESR < 100m @ 100kHz LBUS = 1H
Figure 2: Measuring Input Ripple Current
In figure 3, the two copper strips simulate real-world printed circuit impedances between the power supply and its load. In order to minimize circuit errors and standardize tests between units, scope measurements should be made using BNC connectors or the probe ground should not exceed one half inch and soldered directly to the test circuit. Minimum Output Loading Requirements All models regulate within specification and are stable under 10% minimum load to full load conditions. Operation under no load might however slightly increase output ripple and noise. Thermal Shutdown To protect against thermal overstress, these converters include thermal shutdown circuitry. If environmental conditions cause the temperature of the DC/ DC's to rise above the Operating Temperature Range up to the shutdown tememail: sales@murata-ps.com
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MDC_BEI15W.A04 Page 6 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
Output Short Circuit Condition When a converter is in current-limit mode, the output voltage will drop as the output current demand increases. If the output voltage drops too low (approximately 98% of nominal output voltage for most models), the PWM controller will shut down. Following a time-out period, the PWM will restart, causing the output voltage to begin rising to its appropriate value. If the short-circuit condition persists, another shutdown cycle will initiate. This rapid on/off cycling is called "hiccup mode". The hiccup cycling reduces the average output current, thereby preventing excessive internal temperatures and/or component damage. Remote On/Off Control The remote On/Off Control can be specified with either logic polarity. Please refer to the Connection Diagram on page 1 for On/Off connections. Positive polarity models are enabled when the On/Off pin is left open or is pulled high to +Vin with respect to -Vin. Therefore, the On/Off control can be disconnected if the converter should always be on. Positive-polarity devices are disabled when the On/Off is grounded or brought to within a low voltage (see Specifications) with respect to -Vin. Negative polarity devices are on (enabled) when the On/Off pin is grounded or brought to within a low voltage (see Specifications) with respect to -Vin. The device is off (disabled) when the On/Off is pulled high (see Specifications) with respect to -Vin. Dynamic control of the On/Off function must sink the specified signal current when brought low and withstand the specified voltage when brought high. Be aware too that there is a finite time in milliseconds (see Specifications) between the time of On/Off Control activation and stable, regulated output. This time will vary slightly with output load type and current and input conditions. Output Capacitive Load These converters do not require external capacitance added to achieve rated specifications. Users should only consider adding capacitance to reduce switching noise and/or to handle spike current load steps. Install only enough capacitance to achieve your noise and surge response objectives. Excess external capacitance may cause regulation problems and possible oscillation or instability. The maximum rated output capacitance and ESR specification is given for a capacitor installed immediately adjacent to the converter.
+SENSE +OUTPUT
COPPER STRIP
C1
C2
SCOPE
RLOAD
-OUTPUT COPPER STRIP
C1 = 0.1F CERAMIC C2 = 10F TANTALUM LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 3: Measuring Output Ripple and Noise (PARD)
perature, an on-board electronic temperature sensor will power down the unit. When the temperature decreases below the turn-on threshold, the converter will automatically restart. There is a small amount of temperature hysteresis to prevent rapid on/off cycling. CAUTION: If you operate too close to the thermal limits, the converter may shut down suddenly without warning. Be sure to thoroughly test your application to avoid unplanned thermal shutdown. Temperature Derating Curves The graphs in the next section illustrate typical operation under a variety of conditions. The Derating curves show the maximum continuous ambient air temperature and decreasing maximum output current which is acceptable under increasing forced airflow measured in Linear Feet per Minute ("LFM"). Note that these are AVERAGE measurements. The converter will accept brief increases in current or reduced airflow as long as the average is not exceeded. Note that the temperatures are of the ambient airflow, not the converter itself which is obviously running at higher temperature than the outside air. Also note that very low flow rates (below about 25 LFM) are similar to "natural convection", that is, not using fan-forced airflow. Murata Power Solutions makes Characterization measurements in a closed cycle wind tunnel with calibrated airflow. We use both thermocouples and an infrared camera system to observe thermal performance. 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. Output Current Limiting Current limiting inception is defined as the point at which full power falls below the rated tolerance. See the Performance/Functional Specifications. Note particularly that the output current may briefly rise above its rated value in normal operation as long as the average output power is not exceeded. This enhances reliability and continued operation of your application. If the output current is too high, the converter will enter the short circuit condition.
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MDC_BEI15W.A04 Page 7 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
PERFORMANCE DATA, BEI15-050-Q12
Efficiency vs. Line Voltage and Load Current @ +25C
85
3.0
Power Dissipation vs. Line Voltage and Load Current @ +25C
83
Power Dissipation (Watts) 2.5
81 Efficiency (%) 79 77 75 73 71 0.3 0.4 0.5 0.7 0.8 0.9 1.0 1.1 1.3 1.4 1.5 Load Curre nt (Amps) VIN = 9V VIN = 12V VIN = 24V VIN = 36V
2.0
1.5
1.0
VIN = 9V VIN = 12V VIN = 24V VIN = 36V
0.5 0.3 0.4 0.5 0.7 0.8 0.9 1.0 1.1 1.3 1.4 1.5 Output Load Curre nt (Amps)
Maximum Current Temperature Derating at Sea Level (VIN= 9V to 36V, airflow is from pin 1 to pin 3)
3
Output Current (Amps)
2
65 LFM 1
0
30
35
40
45
50 55 60 65 Ambient Temperature (C)
70
75
80
85
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MDC_BEI15W.A04 Page 8 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
PERFORMANCE DATA, BEI15-050-Q48
Efficiency vs. Line Voltage and Load Current @ +25C
84 80 76
Power Dissipation vs. Load Current @ +25C
4.0 3.5 Power Dissipation (Watts) 3.0 2.5 2.0 1.5 1.0 0.5 VIN = 18V VIN = 24V VIN = 48V VIN = 75V 0.2 0.3 0.4 0.6 0.7 0.8 1.0 1.1 1.2 1.4 1.5
72 68 64 Efficiency (%) 60 56 52 48 44 40 0.2 0.3 0.4 0.6
VIN = 18V VIN = 24V VIN = 48V VIN = 75V
0.7
0.8
1.0
1.1
1.2
1.4
1.5
Load Curre nt (Amps)
Output Load Curre nt (Amps)
Maximum Current Temperature Derating at Sea Level (VIN= 18 to 75V, airflow is from pin 1 to pin 2)
3
Output Current (Amps)
2
65 LFM 1
0
30
35
40
45
50 55 60 65 Ambient Temperature (C)
70
75
80
85
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MDC_BEI15W.A04 Page 9 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
PERFORMANCE DATA, BEI15-120-Q12
Efficiency vs. Line Voltage and Load Current @ +25C
85 83
Power Dissipation (Watts) 2.5 3.0
Power Dissipation vs. Load Current @ +25C
81 Efficiency (%) 79 77 75 VIN = 9V VIN = 12V VIN = 24V VIN = 36V
2.0
1.5
1.0
VIN = 9V VIN = 12V VIN = 24V VIN = 36V
73
0.5
71 0.13
0.1
0.2
0.2
0.3
0.3
0.4
0.4
0.5
0.5
0.6
0.6
0.18
0.23
0.28
0.33
0.38
0.43
0.48
0.53
0.58
0.63
Output Load Curre nt (Amps)
Load Curre nt (Amps)
Maximum Current Temperature Derating at Sea Level (VIN= 9V to 36V, airflow is from pin 1 to pin 3)
0.8 0.75 0.7 Output Current (Amps) 0.65 0.6 0.55 0.5 0.45 0.4 30 35 40 45 50 55 60 65 Ambient Temperature (C) 70 75 80 85 65 LFM
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MDC_BEI15W.A04 Page 10 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
PERFORMANCE DATA, BEI15-120-Q48
Efficiency vs. Line Voltage and Load Current @ +25C (Vout = 12V)
86 83
Power Dissipation vs. Load Current @ +25C
3.0
Power Dissipation (Watts)
2.5
80 77 Efficiency (%) 74 71 68 65 0.06 VIN = 18V VIN = 24V VIN = 48V VIN = 75V
2.0
1.5 VIN = 18V VIN = 24V VIN = 48V VIN = 75V 0.1 0.2 0.2 0.3 0.3 0.4 0.5 0.5 0.6 0.6
1.0
0.5 0.1
0.12 0.17 0.23 0.29 0.34 0.40 0.45 0.51 0.57 0.62
Output Load Curre nt (Amps)
Load Curre nt (Amps)
Maximum Current Temperature Derating at Sea Level (VIN= 18V, airflow is from pin 1 to pin 2)
0.65 0.65
Maximum Current Temperature Derating at Sea Level (VIN=24V, airflow is from pin 1 to pin 2)
100 LFM Output Current (Amps) Output Current (Amps) 0.60 0.60
Natural Convection
0.55
0.55
0.50 20 25 30 35 40 45 50 55 60 Ambient Temperature (C) 65 70 75 80 85
0.50 20 25 30 35 40 45 50 55 60 Ambient Temperature (C) 65 70 75 80 85
Maximum Current Temperature Derating at Sea Level (VIN= 48V, airflow is from pin 1 to pin 2)
0.65 0.65
Maximum Current Temperature Derating at Sea Level (VIN= 75V, airflow is from pin 1 to pin 2)
Natural Convection Output Current (Amps) Output Current (Amps) 0.60 0.60
100 LFM
0.55
0.55
0.50 20 25 30 35 40 45 50 55 60 Ambient Temperature (C) 65 70 75 80 85
0.50 20 25 30 35 40 45 50 55 60 Ambient Temperature (C) 65 70 75 80 85
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MDC_BEI15W.A04 Page 11 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
PERFORMANCE DATA, BEI15-150-Q12
Efficiency vs. Line Voltage and Load Current @ +25C
86 84 82 80 Efficiency (%) 78 76 74 72 70 68 66 64 0.10 0.14 0.18 0.22 0.26 0.30 0.34 0.38 0.42 0.46 0.50 Load Curre nt (Amps) VIN = 9V VIN = 12V VIN = 24V VIN = 36V
Power Dissipation vs. Load Current @ +25C
3.00 2.75 2.50 Power Dissipation (Watts) 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.10 0.14 0.18 0.22 0.26 0.30 0.34 0.38 Output Load Curre nt (Amps) 0.42 0.46 0.50 VIN = 9V VIN = 12V VIN = 24V VIN = 36V
Maximum Current Temperature Derating at Sea Level (VIN= 9V to 36V, airflow is from pin 1 to pin 3)
0.7 0.6
Output Current (Amps)
0.5 65 LFM 0.4
0.3 0.2
0.1 0 35 45 55 65 Ambient Temperature (C) 75 85
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MDC_BEI15W.A04 Page 12 of 13
BEI15 Series
Isolated Wide Input Bipolar 15-Watt DC/DC Converters
PERFORMANCE DATA, BEI15-150-Q48
Efficiency vs. Line Voltage and Load Current @ +25C
88 86 84 82 Efficiency (%) 80 78 76 74 72 70 68 0.10 0.14 0.18 0.22 0.26 0.30 0.34 0.38 0.42 0.46 0.50 VIN = 18V VIN = 24V VIN = 48V VIN = 75V
Power Dissipation (Watts) 3.25 3.00 2.75 2.50 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.1 0.1 0.2 0.2 0.3 0.3 VIN = 18V VIN = 24V VIN = 48V VIN = 75V 0.3 0.4 0.4 0.5 0.5
Power Dissipation vs. Line Voltage and Load Current @ +25C
Load Curre nt (Amps)
Output Load Curre nt (Amps)
Maximum Current Temperature Derating at Sea Level (VIN= 18 to 75V, airflow is from pin 1 to pin 2)
1
0.8
Output Current (Amps)
0.6 65 LFM 0.4
0.2
0 30 35 40 45 50 55 60 65 Ambient Temperature (C) 70 75 80 85
Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
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. Specifications are subject to change without notice. (c) 2011 Murata Power Solutions, Inc.
www.murata-ps.com/locations
18 Feb 2011
email: sales@murata-ps.com
MDC_BEI15W.A04 Page 13 of 13

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