BEI15-150-Q12P-C.

BEI15 Series www.murata-ps.com Isolated Wide Input Bipolar 15-Watt DC/DC Converters Typical unit FEATURES PRODUCT OVERVIEW  Small footprint DC/DC converter, ideal for high current applications 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 0.33" (24.4 x 27.9 x 8.4 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  Industry standard 0.96" x 1.1" X 0.33" 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 85°C temperature range (with derating) 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.  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) CONNECTION DIAGRAM *TPMBUJPO Barrier +Vin (1) F1 External DC Power Source On/Off Control (3) Controller and Power 5SBOTGFS Open = On $MPTFE

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'JMUFST +Vout (6) Common (5) t
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'JMUFST -Vout (4) Reference and Error Amplifier -Vin (2) 　 Typical topology is shown. For full details go to www.murata-ps.com/rohs Murata Power Solutions recommends a fuse at F1. REG.-Nr. D806 www.murata-ps.com/support MDC_BEI15W.A18 Page 1 of 15 BEI15 Series Isolated Wide Input Bipolar 15-Watt DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ➀ Output Input R/N (mVp-p) Regulation (Max.) IIN = VIN no Nom. Range load (V) (V) (mA) Min. Root Models ➀ IOUT Total VOUT (mA, Power (V) max.)➁ (W) Typ. Max. BEI15-050-Q12 ±5 ±1500 15 60 100 ±0.25% ±0.25% 24 9-36 90 740 82.8% 84% BEI15-050-Q48 ±5 ±1500 15 60 100 ±0.25% ±0.25% 48 18-75 50 374 82% 83.5% BEI15-120-Q12 ±12 ±625 15 80 120 ±0.25% ±0.25% 24 9-36 95 730 82% 86% BEI15-120-Q48 ±12 ±625 15 80 120 ±0.25% ±0.25% 48 18-75 50 370 84% 85.5% BEI15-150-Q12 ±15 ±500 15 100 150 ±0.25% ±0.25% 24 9-36 100 740 83% 84% BEI15-150-Q48 ±15 ±500 15 100 150 ±0.25% ±0.25% 48 18-75 50 360 84.5% 86% Line Load➄ ➀ Please refer to the part number structure for additional options and complete ordering part numbers. ➁ 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. ➂ All specifications are at nominal line voltage and full load, +25 °C. unless otherwise noted. See detailed specifications and notes for full conditions. Open Frame Package – C69 Efficiency IIN = full load (mA) Typ. (inches) (mm) Case Pinout 0.96x1.1x0.33 24.4x27.9x8.4 P74 Output capacitors are 1 μF ceramic in parallel with 10 μF electrolytic. The input cap is 100 μF, low ESR. I/O caps are necessary for our test equipment and may not be needed for your application. ➃ RoHS-6 compliance does not claim EU RoHS exemption 7b (lead in solder). ➄ Balanced loads, 10% to 100% loads. PART NUMBER STRUCTURE BEI15 - 050 - Q12 P H 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) *Minimum * * order quantity is required. Samples available with standard pin length only. Conformal Coating Option Blank = No coating, standard H = Coating added, optional (built to order; contact Murata Power Solutions for MOQ and lead times.) * On/Off Control Logic P = Positive N = Negative X = Control pin omitted‡ ‡Some model number combinations may not be available. See website or contact your local Murata sales representative. Special Customer Configuration Part Number: BEI15-150-Q48N-C-CIS www.murata-ps.com/support MDC_BEI15W.A18 Page 2 of 15 BEI15 Series Isolated Wide Input Bipolar 15-Watt DC/DC Converters FUNCTIONAL SPECIFICATIONS 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 BEI15-050-Q48 9.0 8.5 17.0 16.0 5 30 0.05 50 90 2.03 25 4 0.05 50 50 1.0 1 2 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-Q48 8.9 8.4 17.0 16.0 5 30 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. Negative logic ("N" model suffix) OFF=open pin or +10 to +15V max. ON=Gnd pin or -0.7 to +0.8V max. 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 BEI15-150-Q12 1 BEI15-050-Q12 BEI15-050-Q48 BEI15-120-Q12 BEI15-120-Q48 See ordering guide ±1 ±0.02 10 BEI15-150-Q12 BEI15-150-Q48 See ordering guide Capacitive loading, μF max., low ESR 2000000 (Ambient, natural convection, with derating, vertical mount). See Derating graphs. -40 to +85°C No derating Storage temperature range -40 to +70°C -55 to +125°C Thermal protection/shutdown, °C (measured at PWM) 130 Relative humidity, non-condensing PHYSICAL CHARACTERISTICS Outline dimensions Pin material Pin diameter Pin Finish Weight, ounces (grams) To +85°C/85% 0.352 (10) 0.352 (10) Electromagnetic interference (requires external filter) Meets EN55022 and CISPR22 with external filter Flammability rating UL 94V-0 UL/cUL 60950-1 CSA-C22.2 No.60950-1 IEC/EN 60950-1 Safety (designed to meet) ABSOLUTE MAXIMUM RATINGS Input Voltage Q12 models Volts, max.,continuous Volts, transient 100 mS Q48 models Volts, max.,continuous Volts, transient 100 mS On/Off Control, referred to -Vin Volts, min. Volts, max. Input reverse polarity protection Output Current, sustained short circuit Storage Temperature Range min. °C. max. °C. Lead Temperature, °C. max.(soldering, ten seconds) See mechanical specs Copper alloy 0.040 inches 1.016 mm Gold plate over nickel underplate 0.352 (10) 0.352 (10) 36 50 75 100 -0.3 15 None, install external fuse Current-limited, see specs -55 +125 See soldering guidelines www.murata-ps.com/support MDC_BEI15W.A18 Page 4 of 15 BEI15 Series Isolated Wide Input Bipolar 15-Watt DC/DC Converters PERFORMANCE DATA, BEI15-050-Q12 Efficiency vs. Line Voltage and Load Current @ +25°C Power Dissipation vs. Line Voltage and Load Current @ +25°C 85 3.0 Power Dissipation (Watts) 83 Efficiency (%) 81 79 VIN = 9V VIN = 12V VIN = 24V VIN = 36V 77 75 2.5 2.0 1.5 VIN = 9V VIN = 12V VIN = 24V VIN = 36V 1.0 0.5 0.3 73 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) 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) Maximum Current Temperature Derating at Sea Level (VIN= 9V to 36V, airflow is from pin 1 to pin 3) Output Current (Amps) 3 2 0.33 m/s (65 LFM) 1 0 30 35 40 45 50 55 60 65 Ambient Temperature (ºC) 70 75 80 85 www.murata-ps.com/support MDC_BEI15W.A18 Page 5 of 15 BEI15 Series Isolated Wide Input Bipolar 15-Watt DC/DC Converters PERFORMANCE DATA, BEI15-050-Q48 Efficiency vs. Line Voltage and Load Current @ +25°C Power Dissipation vs. Load Current @ +25°C 4.0 84 80 3.5 72 VIN = 18V VIN = 24V VIN = 48V VIN = 75V 68 64 Efficiency (%) Power Dissipation (Watts) 76 60 56 52 48 3.0 2.5 2.0 1.5 VIN = 18V VIN = 24V VIN = 48V VIN = 75V 1.0 44 40 0.2 0.5 0.3 0.4 0.6 0.7 0.8 1.0 1.1 1.2 1.4 0.2 1.5 0.3 0.4 0.6 Load Curre nt (Amps) 0.8 1.0 1.1 1.2 1.4 1.5 80 85 Maximum Current Temperature Derating at Sea level (Vin = 18 to 75V, natural convection) Maximum Current Temperature Derating at Sea Level (VIN= 18 to 75V, airflow is from pin 1 to pin 2) 3 2 Output Load Current (Amps) Output Current (Amps) 0.7 Output Load Curre nt (Amps) 2 0.33 m/s (65 LFM) 1 Vin = 18V Vin = 24V Vin = 36V Vin = 48V Vin = 60V Vin = 75V 1 0 30 35 40 45 50 55 60 65 70 75 Ambient Temperature (°C) 0 30 35 40 45 50 55 60 65 Ambient Temperature (ºC) 70 75 80 85 www.murata-ps.com/support MDC_BEI15W.A18 Page 6 of 15 BEI15 Series Isolated Wide Input Bipolar 15-Watt DC/DC Converters PERFORMANCE DATA, BEI15-120-Q12 Efficiency vs. Line Voltage and Load Current @ +25°C Power Dissipation vs. Load Current @ +25°C 85 3.0 Power Dissipation (Watts) 83 Efficiency (%) 81 VIN = 9V VIN = 12V VIN = 24V VIN = 36V 79 77 2.5 2.0 1.5 VIN = 9V VIN = 12V VIN = 24V VIN = 36V 75 1.0 73 0.5 71 0.13 0.1 0.18 0.23 0.28 0.33 0.38 0.43 0.48 0.53 0.58 0.2 0.2 0.3 0.63 0.3 0.4 0.4 0.5 0.5 0.6 0.6 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 Output Current (Amps) 0.7 0.65 0.33 m/s (65 LFM) 0.6 0.55 0.5 0.45 0.4 30 35 40 45 50 55 60 65 Ambient Temperature (ºC) 70 75 80 85 www.murata-ps.com/support MDC_BEI15W.A18 Page 7 of 15 BEI15 Series Isolated Wide Input Bipolar 15-Watt DC/DC Converters PERFORMANCE DATA, BEI15-120-Q48 Efficiency vs. Line Voltage and Load Current @ +25°C (Vout = 12V) Power Dissipation vs. Load Current @ +25°C 86 3.0 Power Dissipation (Watts) 83 80 VIN = 18V VIN = 24V VIN = 48V VIN = 75V Efficiency (%) 77 74 71 2.5 2.0 1.5 VIN = 18V VIN = 24V VIN = 48V VIN = 75V 1.0 68 65 0.06 0.5 0.1 0.12 0.17 0.23 0.29 0.34 0.40 0.45 0.51 0.57 0.1 0.2 0.2 0.3 0.3 0.4 0.5 0.5 0.6 0.6 Output Load Curre nt (Amps) 0.62 Load Curre nt (Amps) Maximum Current Temperature Derating at Sea Level (VIN=24V, airflow is from pin 1 to pin 2) Maximum Current Temperature Derating at Sea Level (VIN= 18V, airflow is from pin 1 to pin 2) 0.65 0.65 Natural Convection 0.60 Output Current (Amps) Output Current (Amps) 0.5 m/s (100 LFM) 0.55 0.50 0.60 0.55 0.50 20 25 30 35 40 45 50 55 60 Ambient Temperature (ºC) 65 70 75 80 85 20 Maximum Current Temperature Derating at Sea Level (VIN= 48V, airflow is from pin 1 to pin 2) 25 30 35 40 65 70 75 80 85 75 80 85 Maximum Current Temperature Derating at Sea Level (VIN= 75V, airflow is from pin 1 to pin 2) 0.65 0.65 0.5 m/s (100 LFM) Natural Convection 0.60 Output Current (Amps) Output Current (Amps) 45 50 55 60 Ambient Temperature (ºC) 0.55 0.50 0.60 0.55 0.50 20 25 30 35 40 45 50 55 60 Ambient Temperature (ºC) 65 70 75 80 85 20 25 30 35 40 45 50 55 60 Ambient Temperature (ºC) 65 70 www.murata-ps.com/support MDC_BEI15W.A18 Page 8 of 15 BEI15 Series Isolated Wide Input Bipolar 15-Watt DC/DC Converters PERFORMANCE DATA, BEI15-150-Q12 Efficiency vs. Line Voltage and Load Current @ +25°C Power Dissipation vs. Load Current @ +25°C 3.00 86 2.75 82 2.50 Power Dissipation (Watts) 84 Efficiency (%) 80 78 VIN = 9V VIN = 12V VIN = 24V VIN = 36V 76 74 72 70 2.25 2.00 1.75 1.25 68 1.00 66 0.75 64 0.10 0.14 0.18 0.22 0.26 0.30 0.34 0.38 0.42 0.46 VIN = 9V VIN = 12V VIN = 24V VIN = 36V 1.50 0.50 0.10 0.50 0.14 0.18 0.22 Load Curre nt (Amps) Maximum Current Temperature Derating at Sea Level (VIN= 9V to 36V, airflow is from pin 1 to pin 3) 0.26 0.30 0.34 0.38 Output Load Curre nt (Amps) 0.42 0.46 0.50 Maximum Current Temperature Derating at Sea Level (Natural convection) 510 0.7 500 490 0.6 Output Current (mA) Output Current (Amps) 480 0.5 0.33 m/s (65 LFM) 0.4 0.3 0.2 470 Vin = 12 V 460 Vin = 24 V 450 440 430 420 0.1 410 0 35 45 55 65 Ambient Temperature (ºC) 75 85 400 30 35 40 45 50 55 60 65 Ambient Temperature (ºC) 70 75 80 85 www.murata-ps.com/support MDC_BEI15W.A18 Page 9 of 15 BEI15 Series Isolated Wide Input Bipolar 15-Watt DC/DC Converters PERFORMANCE DATA, BEI15-150-Q48 Efficiency vs. Line Voltage and Load Current @ +25°C Power Dissipation vs. Line Voltage and Load Current @ +25°C 88 3.25 86 3.00 2.75 Power Dissipation (Watts) 84 Efficiency (%) 82 80 VIN = 18V VIN = 24V VIN = 48V VIN = 75V 78 76 74 2.50 2.25 2.00 1.75 1.50 1.25 72 1.00 70 0.75 68 0.10 0.14 0.18 0.22 0.26 0.30 0.34 0.38 0.42 0.46 0.50 0.50 0.1 VIN = 18V VIN = 24V VIN = 48V VIN = 75V 0.1 0.2 0.2 0.3 0.3 0.3 0.4 0.4 0.5 0.5 Output Load Curre nt (Amps) Load Curre nt (Amps) Maximum Current Temperature Derating at Sea Level (VIN= 18 to 75V, airflow is from pin 1 to pin 2) 1 Output Current (Amps) 0.8 0.6 0.33 m/s (65 LFM) 0.4 0.2 0 30 35 40 45 50 55 60 65 Ambient Temperature (ºC) 70 75 80 85 www.murata-ps.com/support MDC_BEI15W.A18 Page 10 of 15 BEI15 Series Isolated Wide Input Bipolar 15-Watt DC/DC Converters MECHANICAL SPECIFICATIONS, OPEN FRAME TOP VIEW Case 69 Dimensions are in inches (mm shown for ref. only). Third Angle Projection 24.4 0.96 Zero corner cuts for BEI15-120-Q12 and BEI15-150-Q12 models. 20.1 0.79 PIN #1 Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 1˚ Components are shown for reference only. 27.9 1.10 INPUT/OUTPUT CONNECTIONS Pin Function SIDE VIEW 8.4 0.33 MAX 1 Positive Vin 2 Negative Vin 3 On/Off Control * 4 Negative Vout 5 Common Return 6 Positive Vout *The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) logic. SEATING PLANE 0.040 0.002 PIN WITH 0.071 0.002 SHOULDER 6X AT PINS 1-6 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 0.475 REF CL 2.54 0.100 #6 10.16 0.400 5.08 0.200 CL #1 #5 10.16 0.400 #2 #3 CL 10.16 0.400 #4 6.3 0.25 Standard pin length is shown. Please refer to the Ordering Guide for alternate pin lengths. www.murata-ps.com/support MDC_BEI15W.A18 Page 11 of 15 BEI15 Series Isolated Wide Input Bipolar 15-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 BEI 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 [9.92] 252.0 28.4 Typ 6.4 Typ 18.0 5x 38.1 25.4 Typ [9.92] 252.0 190.5 Ref R 6.4 Typ A 252.0 Ref A 9.5 deep Ref 4x 44.5 22.9 252.0 Ref 177.8 Ref 19.1 Ref 9.5 [.38 in] Pocket Depth 19.1 [.75 in] SECTION A-A Notes: 1. Material: Dow 220 antistat ethafoam (Density: 34-35 kg/m3) 2. Dimensions: 252 x 252 x 19.1 mm 6 x 5 array (30 per tray) 3. All dimensions in millimeters [inches] 4. Tolerances unless otherwise specified: +1/-0 www.murata-ps.com/support MDC_BEI15W.A18 Page 12 of 15 BEI15 Series Isolated Wide Input Bipolar 15-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. 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 μF, 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 μF 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 VIN + – + – LBUS CBUS CIN -INPUT CIN = 2 x 100μF, ESR < 700mΩ @ 100kHz CBUS = 1000μF, ESR < 100mΩ @ 100kHz LBUS = 1μH Figure 2: Measuring Input Ripple Current +SENSE +OUTPUT C1 C2 SCOPE RLOAD -OUTPUT C1 = 1μF C2 = 10μF LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 3: Measuring Output Ripple and Noise (PARD) www.murata-ps.com/support MDC_BEI15W.A18 Page 13 of 15 BEI15 Series Isolated Wide Input Bipolar 15-Watt DC/DC Converters 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 temperature, 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 this data sheet 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. 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 logic type. Please refer to the Connection Diagram on page 1 for On/Off connections. Positive-logic 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-logic devices are disabled when the On/Off is grounded or brought to within a low voltage (see Specifications) with respect to –Vin. Negative-logic 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. Floating Outputs Since these are isolated DC/DC converters, their outputs are "floating." Any BEI15 model may be configured to produce an output of 10V, 24V or 30V (for ±5V, ±12V or ±15V models, respectively) by applying the load across the +Output and –Output pins, with either output grounded. The Common pin should be left open. Minimum 20% loading is recommended under these conditions. 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 115° C. Maximum Pot Temperature 270° C. Maximum Solder Dwell Time 7 seconds For Sn/Pb based solders: Maximum Preheat Temperature 105° C. Maximum Pot Temperature 250° C. Maximum Solder Dwell Time 6 seconds www.murata-ps.com/support MDC_BEI15W.A18 Page 14 of 15 BEI15 Series Isolated Wide Input Bipolar 15-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. [3] Conducted Emissions Test Results 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 Specifications. An external discrete filter is installed and the circuit diagram is shown below. Test Card Resistive Load UUT V+ Black C16 C8 C8 L3 C8 L1 C8 C8 C8 C7 C3 Gnd C4 Resistive Load inside a metal container Vin+ C17 V- Vout+ VinVout- Figure 4. Conducted Emissions Test Circuit Resistive Load inside a metal container Graph 1. Conducted emissions performance with filter, CISPR 22, Class B, full load, for BEI15-150-Q12P-C [1] Conducted Emissions Parts List Reference L1 L3 C1, C2, C8 C7 C16, C17 C3, C4 Description 1mH, 6A 500μH,10A 2.2μfd Electrolytic Capacitor 100μfd, 100V .22μfd Electrolytic Capacitor 33μfd, 100V [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 Graph 2. Conducted emissions performance without filter, CISPR 22, Class B, full load, for BEI15-150-Q12P-C Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, 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/ 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. © 2016 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_BEI15W.A18 Page 15 of 15