BWR Series www.murata-ps.com 15-17W, Dual Output DC/DC Converters Typical units FEATURES PRODUCT OVERVIEW Output voltages: 5, 12 or 15 Volts Input voltage ranges: 10-18V, 18-36V or 36-75V Small packages, 1" x 2" x 0.48" Industry-standard pinouts Low cost; Highly reliable Proven SMT-on-pcb construction Designed to meet IEC/EN/UL60950-1 safety mark available (75V-input models) 1500Vdc isolation; 100% tested Efficiencies to 86% -40 to +100C operating temperature Thermal protection For your mid-range power requirements, it's hard to beat the combination of small packaging, low cost, proven reliability and outstanding electrical performance offered by the 15-17W, dual-output models of MPS's A-Series DC/DC converters. These highly efficient, rugged converters combine straightforward circuit topologies, the newest components, proven SMT-on-pcb construction methods, and highly repeatable automatic-assembly techniques. Their superior durability is substantiated by a rigorous in-house qualification program. The input voltage ranges of the BWR 15-17 Bipolar Series (10-18V for "D12A" models, 18-36V for "D24A" models and 36-75V for "D48A" models) make them excellent candidates for telecommunication system line drivers, or distributed power architectures. Their 5, 12 or 15 Volt outputs cover virtually all standard applications. These popular power converters are fully isolated (1500Vdc 100% tested) and display excellent line and load regulation (0.5% max. for line and load). They are completely I/O protected (input overvoltage shutdown and reverse-polarity protection, output current limiting and overvoltage protection) and contain input (pi type) and output filtering to reduce noise. These extremely reliable, cost-effective power converters are housed in standard 1" x 2" x 0.48" UL94V-0 rated plastic packages. They offer industry-standard pinouts and are ideally suited for high-volume computer, telecom/datacom, instrumentation and ATE applications. On/Off control +OUTPUT (4) +INPUT (1) COMMON (5) -OUTPUT (6) -INPUT (2) ON/OFF CONTROL (OPTION) (3) PWM CONTROLLER OPTO ISOLATION Figure 1. Simplified Schematic REFERENCE & ERROR AMP Typical topology is shown For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_BWR15-17W.B10 Page 1 of 9 BWR Series 15-17W, Dual Output DC/DC Converters Performance Specifications and Ordering Guide Output Input IIN (mA/A) Efficiency Min. Typ. Package (Case, Pinout) 10-18 240/1.5 79% 81% C14A, P43 18-36 112/0.75 81% 83% C14A, P43 48 36-75 59/0.38 81% 83% C14A, P43 0.5% 12 10-18 265/1.7 82% 83.5% C14A, P43 0.5% 24 18-36 127/0.85 83% 85% C14A, P43 0.5% 0.5% 48 36-75 62/0.4 84% 86% C14A, P43 100 0.5% 0.5% 12 10-18 266/1.7 82% 84% C14A, P43 100 0.5% 0.5% 24 18-36 125/0.84 84% 86% C14A, P43 100 0.5% 0.5% 48 36-75 65/0.41 85% 87% C14A, P43 VOUT (Volts) IOUT (mA) R/N (mVp-p) Typ. Max. Regulation (Max.) Line Load BWR-5/1500-D12A 5 1500 75 100 0.5% BWR-5/1500-D24A 5 1500 75 100 0.5% BWR-5/1500-D48A 5 1500 75 100 BWR-12/725-D12A 12 725 75 BWR-12/725-D24A 12 725 75 BWR-12/725-D48A 12 725 BWR-15/575-D12A 15 BWR-15/575-D24A 15 BWR-15/575-D48A 15 Root Model VIN Nom. (Volts) Range (Volts) 0.5% 12 0.5% 24 0.5% 0.5% 100 0.5% 100 0.5% 75 100 575 75 575 75 575 75 Typical at TA = +25C under nominal line voltage and full-load conditions unless otherwise noted. Ripple/Noise (R/N) measured over a 20MHz bandwidth. Balanced loads, 10% to 100% load step. Nominal line voltage, 10% load/100% load conditions. These are not complete model numbers. Please use the part number structure when ordering. P A R T N U M B E R S T R U C T U R E M E C H A N I C A L S P E C I F I C A T I O N S B WR - 12 / 725 - D48 A C - C 2.00 (50.80) PLASTIC CASE Output Configuration: B = Bipolar RoHS-6 Hazardous Substance Compliant* Wide Range Input Nominal Output Voltages: 5, 12 or 15 Volts Maximum Output Current in mA from each output Add C or N suffix as desired. See below. A-Series High Reliability Input Voltage Range: D12 = 10-18 Volts (12V nominal) D24 = 18-36 Volts (24V nominal) D48 = 36-75 Volts (48V nominal) 0.465 (11.81) Case C14A STANDOFF 0.015 (0.38) 0.040 0.002 DIA. (1.016 0.051) 0.20 MIN (5.08) 5 C Positive On/Off control function (pin 3) N Negative On/Off control function (pin 3) * Contact Murata Power Solutions for availability. Some model number combinations may not be available. Please contact Murata Power Solutions for more information. 0.800 (20.32) 2 0.400 (10.16) 6 3 Part Number Suffixes No Suffix Pin 3 not installed 0.100 (2.54) 4 1 1.00 (25.40) BWR 15-17 Watt DC/DC's are designed so an On/Off Control function with either positive polarity ("C" suffix) or negative polarity ("N" suffix) can be added to the pin 3 position. Models ordered without On/Off control (without C or N suffix) will not have pin 3 installed. 0.60 (15.24) 0.800 (20.32) BOTTOM VIEW 0.200 (5.08) DIMENSION ARE IN INCHES (MM) I/O Connections Pin Function P43 1 +Input 2 -Input 3 On/Off Control* 4 +Output 5 Output Return 6 -Output * Pin is optional 0.10 (2.54) Dimensions are in inches (mm) shown for ref. only. Third Angle Projection Tolerances (unless otherwise specified): .XX 0.02 (0.5) .XXX 0.010 (0.25) Angles 2 Components are shown for reference only. www.murata-ps.com/support MDC_BWR15-17W.B10 Page 2 of 9 BWR Series 15-17W, Dual Output DC/DC Converters Performance/Functional Specifications Typical @ TA = +25C under nominal line voltage and full-load conditions, unless noted. Input Input Voltage Range: D12A Models D24A Models D48A Models 10-18 Volts (12V nominal) 18-36 Volts (24V nominal) 36-75 Volts (48V nominal) 19-21 Volts 37-40 Volts 77-81 Volts Start-Up Threshold: D12A Models D24A Models D48A Models 9.4-10 Volts 16.5-18 Volts 34-36 Volts 7-8.5 Volts 15.5-17.5 Volts 32.5-34.5 Volts 35msec 30msec Switching Frequency 300kHz (30kHz) MTBF Bellcore, ground fixed, fullpower 25C ambient, 1 million hours Operating Temperature (ambient): -40 to +85C with derated power (see derating curves) Thermal Shutdown 115C Storage Temperature -40 to +120C 1" x 2" x 0.48" (25.4 x 50.8 x 12.19mm) Case Material Diallyl Phthalate Gold-plate over copper alloy Weight 1.19 ounces (34 grams) Primary to Secondary Insulation Level Functional 10 mAp-p Pi Reverse-Polarity Protection Brief duration, 5A maximum. On = open or 13V- +VIN, IIN = 1mA max. Off = 0-0.8V, IIN = 1mA max. On = 0-0.5V, IIN = 3mA max. Off = open or 3.5- +VIN, IIN = 1mA max. N Models Dimensions See Ordering Guide 5mA Input Reflected Ripple Current On/Off Control: C Models UL 94V-0 Physical Pin Material Input Filter Type Output VOUT Accuracy (balanced half load) 2.0%, maximum Minimum Load Requirement 10% Ripple/Noise (20MHz BW) See Ordering Guide Line/Load Regulation See Ordering Guide Efficiency See Ordering Guide Isolation Voltage 1500Vdc, minimum Isolation Capacitance 550pF Isolation Resistance 10M Current Limit Inception (@ 98% VOUT) 5V Models 12V Models 15V Models 1.9-2.5A 1-1.5A 0.85-1.2A Short-Circuit Current 5V Models 12V Models 15V Models 800mA maximum 700mA maximum 700mA maximum Overvoltage protection 5V Models 12V Models 15V Models Output voltage comparator 5.45-7.15 Volts 13-15.8 Volts 16.2-19.8 Volts Temperature Coefficient 250sec maximum Start-Up Time: VIN to VOUT On/Off to VOUT Flammability Undervoltage Shutdown: D12A Models D24A Models D48A Models Maximum Capacitive Loading Transient Response: (50-100% load step to 2% VOUT) Environmental Overvoltage Shutdown: D12A Models D24A Models D48A Models Input Current Normal Operating Conditions Standby Mode (Off, OV, UV) Dynamic Characteristics 1000F (per output) 0.02% per C All models are specified with no external I/O capacitors. See Technical Notes/Graphs for details. Applying a voltage to the On/Off Control (pin 3) when no input power is applied to the converter can cause permanent damage to the converter. Output noise may be further reduced with the addition of additional external output capacitors. See Technical Notes. The On/Off Control is designed to be driven with open-coolector logic or the application of appropriate voltage levels. Voltages may be referenced to the -Input (pin 2). Input Ripple Current is tested/specified over a 5-20MHz bandwidth with an external 33F input capacitor and a simulated source impedance of 220F and 12H. See I/O Filtering, Input Ripple Current and Output Noise for details. Absolute Maximum Ratings Input Voltage: Continuous: D12A Models D24A Models D48A Models Transient (100msec): D12A Models D24A Models D48A Models On/Off Control (pin 3) Max. Voltages Referenced to -Input (pin 2) "C" Suffix "N" Suffix 23 Volts 42 Volts 81 Volts 50 Volts 50 Volts 100 Volts +VIN (+18 Volts) +7 Volts Input Reverse-Polarity Protection Current must be <5 Amps. Brief duration only. Fusing recommended. Output Current Current limited. Devices can withstand sustained output short circuits without damage. Case Temperature 120C Storage Temperature -40 to +120C Lead Temperature See soldering guidelines These 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 Specifications Table is not implied. www.murata-ps.com/support MDC_BWR15-17W.B10 Page 3 of 9 BWR Series 15-17W, Dual Output DC/DC Converters T E C H N I C A L N O T E S Input Fusing Certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. Fuses should also be used if the possibility of sustained, non-current-limited, input-voltage polarity reversal exists. For MPS BWR 15-17 Watt DC/DC Converters, you should use slow-blow type fuses with values no greater than the following: Model All D12A Models BWR-5/1500-D24A BWR-12/725-D24A, BWR-15/575-D24A All D48A Models External input capacitors (CIN in Figure 2) serve primarily as energy-storage elements, minimizing line voltage variations caused by transient IR drops in conductors from backplane to the DC/DC. Input caps should be selected for bulk capacitance (at appropriate frequencies), low ESR, and high rms-ripplecurrent ratings. The switching nature of DC/DC converters requires that dc voltage sources have low ac impedance as highly inductive source impedance can affect system stability. In Figure 2, CBUS and LBUS simulate a typical dc voltage bus. Your specific system configuration may necessitate additional considerations. Fuse Value 4 Amp 2 Amp 2.5 Amp 1 Amp Start-Up Time The VIN to VOUT start-up time is the interval of time where the input voltage crosses the turn-on threshold point, and the fully loaded output voltage enters and remains within its specified accuracy band. Actual measured times will vary with external output capacitance and load. The BWR 15-17W Series implements a soft start circuit that limits the duty cycle of the PWM controller at power up, thereby limiting the Input Inrush current. The On/Off Control to VOUT start-up time assumes the converter has its nominal input voltage applied but is turned off via the On/Off Control pin. The specification defines the interval between the time at which the converter is turned on and the fully loaded output voltage enters and remains within its specified accuracy band. Similar to the VIN to VOUT start-up, the On/Off Control to VOUT start-up time is also governed by the internal soft start circuitry and external load capacitance. Input Overvoltage/Undervoltage Shutdown and Start-Up Threshold Under normal start-up conditions, devices will not begin to regulate until the ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for D48 models). Once operating, devices will not turn off until the input voltage drops below the Undervoltage Shutdown limit (33.5V for D48 models). Subsequent re-start will not occur until the input is brought back up to the Start-Up Threshold. This built in hysteresis prevents any unstable on/off situations from occurring at a single input voltage. Input voltages exceeding the input overvoltage shutdown specification listed in the Performance/Functional Specifications will cause the device to shutdown. A built-in hysteresis of 0.6 to 1.6 Volts for all models will not allow the converter to restart until the input voltage is sufficiently reduced. TO OSCILLOSCOPE CURRENT PROBE +INPUT LBUS + VIN CBUS CIN - -INPUT CIN = 33F, ESR < 700m7 @ 100kHz CBUS = 220F, ESR < 100m7 @ 100kHz LBUS = 12H Figure 2. Measuring Input Ripple Current In critical applications, output ripple/noise (also referred to as periodic and random deviations or PARD) may be reduced below specified limits using filtering techniques, the simplest of which is the installation of additional external output capacitors. These output caps function as true filter elements and should be selected for bulk capacitance, low ESR and appropriate frequency response. All external capacitors should have appropriate voltage ratings and be located as close to the converter as possible. Temperature variations for all relevant parameters should also be taken carefully into consideration. The most effective combination of external I/O capacitors will be a function of line voltage and source impedance, as well as particular load and layout conditions. Floating Outputs Since these are isolated DC/DC converters, their outputs are "floating," with respect to the input. As such, it is possible to use +Output, -Output or Output Return as the system ground thereby allowing the flexibility to generate a variety of output voltage combinations. Regulation for BWR 15-17W bipolar converters is monitored between -Output and +Output (as opposed to Output to Return). Minimum Loading Requirements Input Source Impedance The converters must be driven from a low ac-impedance input source. The DC/ DC's performance and stability can be compromised by the use of highly inductive source impedances. The input circuit shown in Figure 2 is a practical solution that can be used to minimize the effects of inductance in the input traces. For optimum performance, components should be mounted close to the DC/DC converter. If the application has a high source impedance, low VIN models can benefit of increased external input capacitance. I/O Filtering, Input Ripple Current, and Noise Reduction BWR 15-17W converters employ a classical diode-rectification design topology and require a minimum 10% loading to achieve their listed regulation specifications and a stable operating condition. Load Regulation Regulation for the BWR 15-17W bipolar converters is monitored between -Output and +Output (as opposed to Output to Return). As such regulation will assure that voltage between -Output and +Output pins remains within the VOUT accuracy listed in the Performance/Functional Specifications table. All BWR 15-17W DC/DC Converters achieve their rated ripple and noise specifications without the use of external input/output capacitors. In critical applications, input/output ripple and noise may be further reduced by installing additional external I/O caps. www.murata-ps.com/support MDC_BWR15-17W.B10 Page 4 of 9 BWR Series 15-17W, Dual Output DC/DC Converters If loading from +/- Outputs to Output Return is symmetrical, the voltage at Output pins with respect to Output Return will also be symmetrical. An unbalance in loading will consequently result in a degraded VOUT regulation accuracy from +/- Outputs to Output Return ( -Output to +Output regulation will still be within specification) with a load step from minimum to maximum load and with the other output at full load, the maximum deviation is 2.5% VOUT nominal. BWR-15/575-D48A Unbalanced Output Load Regulation The VIN to VOUT start-up time is the interval of time where the input voltage crosses the turn-on threshold point, and the fully loaded output voltage enters and remains within its specified accuracy band. Actual measured times will vary with external output capacitance and load. The BWR 15-17W Series implements a soft start circuit that limits the duty cycle of the PWM controller at power up, thereby limiting the Input Inrush current. 15.2 The On/Off Control to VOUT start-up time assumes the converter has its nominal input voltage applied but is turned off via the On/Off Control pin. The specification defines the interval between the time at which the converter is turned on and the fully loaded output voltage enters and remains within its specified accuracy band. Similar to the VIN to VOUT start-up, the On/Off Control to VOUT start-up time is also governed by the internal soft start circuitry and external load capacitance. 15.1 On/Off Control 15.5 15.4 +15V @ 0A to 0.575A -15V @ 0.575A 15.3 +/-15VOUT Start-Up Time 15 -15V @ 0A to 0.575A +15V @ 0.575A 14.9 14.8 14.7 0 10 20 30 40 50 60 70 80 90 100 The input-side, remote On/Off Control function (pin 3) can be ordered to operate with either polarity. Positive-polarity devices ("C" suffix) are enabled when pin 3 is left open (or is pulled high, +13V to VIN applied with respect to -Input, pin 2, see Figure 2). Positive-polarity devices are disabled when pin 3 is pulled low (0-0.8V with respect to -Input). Negative-polarity devices are off when pin 3 is left open (or pulled high, 3.5V to VIN), and on when pin 3 is pulled low (0-0.5V). See Figure 5. Output Load Regulation (%) 1 +INPUT Figure 4. Output Voltage Accuracy vs. Imbalanced Loading Current Limiting 13V CIRCUIT 3 When output current increases to approximately 15% to 50% above the rated output current, the DC/DC converter will go into a current limiting mode. In this condition the output voltage will decrease proportionately with increases in output current, thereby maintaining a somewhat constant power dissipation. This is commonly referred to as power limiting. Current limit inception is defined as the point where the full-power output voltage falls below the specified tolerance. See Performance/Functional Specifications. If the load current being drawn from the converter is significant enough, the unit will go into a short circuit condition. See "Short Circuit Condition." ON/OFF CONTROL 2 1 When a converter is in current limit mode the output voltages will drop as the output current demand increases. If the output voltage drops too low, the magnetically coupled voltage used to develop primary side voltages will also drop, thereby shutting down the PWM controller. 3 Thermal Shutdown These BWR converters are equipped with Thermal Shutdown Circuitry. If environmental conditions cause the internal temperature of the DC/DC converter rises above the designed operating temperature, a precision temperature sensor will power down the unit. When the internal temperature decreases below the threshold of the temperature sensor the unit will self start. -INPUT Figure 4. Driving the Positive Polarity On/Off Control Pin Short Circuit Condition Following a time-out period, the PWM will restart, causing the output voltages to begin ramping to their appropriate values. If the short-circuit condition persists, another shutdown cycle will be initiated. This on/off cycling is referred to as "hiccup" mode. The hiccup cycling reduces the average output current, thereby preventing internal temperatures from rising to excessive levels. The BWR 15-17W Series is capable of enduring an indefinite short circuit output condition. 5V CIRCUIT +INPUT ON/OFF CONTROL 2 -INPUT Figure 5. Driving the Negative Polarity On/Off Control Pin Dynamic control of the remote on/off function is best accomplished with a mechanical relay or an open-collector/open-drain drive circuit (optically isolated if appropriate). The drive circuit should be able to sink appropriate current (see Performance Specs) when activated and withstand appropriate voltage when deactivated. Applying an external voltage to pin 3 when no input power is applied to the converter can cause permanent damage to the converter. www.murata-ps.com/support MDC_BWR15-17W.B10 Page 5 of 9 BWR Series 15-17W, Dual Output DC/DC Converters Typical Performance Curves BWR-5/1500-D12A Efficiency vs. Input Line And Output Load BWR-5/1500-D12A Output Power vs. Ambient Temperature (No air flow) 85 16 80 14 12 Output Power (Watts) Efficiency (%) 75 70 VIN = 10V 65 VIN = 12V 60 VIN = 10V 10 8 VIN = 12V 6 4 55 VIN = 18V 2 VIN = 18V 0 -40 50 10 20 30 40 50 60 70 80 90 0 50 40 100 70 60 80 90 100 80 90 100 80 90 100 Ambient Temperature (C) Output Current (%) BWR-5/1500-D24A Efficiency vs. Input Line And Output Load BWR-5/1500-D24A Output Power vs. Ambient Temperature (No air flow) 85 16 80 14 12 Output Power (Watts) Efficiency (%) 75 70 VIN = 18V 65 VIN = 24V 60 VIN = 18V 10 VIN = 24V 8 6 VIN = 36V 4 55 2 VIN = 36V 0 -40 50 10 20 30 40 50 60 70 80 90 0 50 40 100 70 60 Ambient Temperature (C) Output Current (%) BWR-5/1500-D48A Efficiency vs. Input Line And Output Load BWR-5/1500-D48A Output Power vs. Ambient Temperature (No air flow) 85 16 80 14 12 Output Power (Watts) Efficiency (%) 75 70 VIN = 36V 65 VIN = 48V 60 VIN = 36V 10 VIN = 48V 8 6 VIN = 75V 4 55 2 VIN = 75V 0 -40 50 10 20 30 40 50 60 Output Current (%) 70 80 90 100 0 40 50 60 70 Ambient Temperature (C) www.murata-ps.com/support MDC_BWR15-17W.B10 Page 6 of 9 BWR Series 15-17W, Dual Output DC/DC Converters Typical Performance Curves BWR-12/725-D12A Efficiency vs. Input Line And Output Load BWR-12/725-D12A Output Power vs. Ambient Temperature (No air flow) 85 18 80 16 14 Output Power (Watts) Efficiency (%) 75 70 VIN = 10V 65 VIN = 12V 60 12 VIN = 10V 10 VIN = 12V 8 6 4 55 VIN = 18V 2 VIN = 18V 0 -40 50 10 20 30 40 50 60 70 80 90 0 50 40 100 70 60 80 90 100 80 90 100 80 90 100 Ambient Temperature (C) Output Current (%) BWR-12/725-D24A Efficiency vs. Input Line And Output Load BWR-12/725-D24A Output Power vs. Ambient Temperature (No air flow) 90 18 85 16 14 Output Power (Watts) Efficiency (%) 80 75 VIN = 18V 70 VIN = 24V 65 VIN = 18V 12 10 VIN = 24V 8 6 VIN = 36V 4 60 2 VIN = 36V 0 -40 55 10 20 30 40 50 60 70 80 90 0 40 100 50 70 60 Ambient Temperature (C) Output Current (%) BWR-12/725-D48A Efficiency vs. Input Line And Output Load BWR-12/725-D48A Output Power vs. Ambient Temperature (Air flow from Input ot Output) 90 18 85 16 14 Output Power (Watts) Efficiency (%) 80 75 VIN = 36V 70 VIN = 48V 65 VIN = 36-75V No Air Flow 12 VIN = 36-75V 150 lfm Air Flow 10 8 VIN = 48V No Air Flow 6 VIN = 48V 150 lfm Air Flow 4 60 2 VIN = 75V 0 -40 55 10 20 30 40 50 60 Output Current (%) 70 80 90 100 0 40 50 60 70 Ambient Temperature (C) www.murata-ps.com/support MDC_BWR15-17W.B10 Page 7 of 9 BWR Series 15-17W, Dual Output DC/DC Converters Typical Performance Curves BWR-15/575-D12A Efficiency vs. Input Line And Output Load BWR-15/575-D12A Output Power vs. Ambient Temperature (No air flow) 85 18 80 16 14 Output Power (Watts) Efficiency (%) 75 70 VIN = 10V 65 VIN = 12V 60 VIN = 10V 12 10 VIN = 12V 8 6 VIN = 18V 4 55 2 VIN = 18V 0 -40 50 10 20 30 40 50 60 70 80 90 0 40 100 70 60 50 80 90 100 80 90 100 80 90 100 Ambient Temperature (C) Output Current (%) BWR-15/575-D24A Efficiency vs. Input Line And Output Load BWR-15/575-D24A Output Power vs. Ambient Temperature (No air flow) 90 18 85 16 14 Output Power (Watts) Efficiency (%) 80 75 VIN = 18V 70 VIN = 24V 65 VIN = 18V 12 10 VIN = 24V 8 6 VIN = 36V 4 60 2 VIN = 36V 0 -40 55 10 20 30 40 50 60 70 80 90 0 40 100 70 60 50 Ambient Temperature (C) Output Current (%) BWR-15/575-D48A Efficiency vs. Input Line And Output Load BWR-15/575-D48A Output Power vs. Ambient Temperature (No air flow) 90 18 85 16 14 Output Power (Watts) Efficiency (%) 80 75 VIN = 36V 70 VIN = 48V 65 12 VIN = 36V 10 VIN = 48V 8 6 4 60 2 VIN = 75V 0 -40 55 10 20 30 40 VIN = 75V 50 60 Output Current (%) 70 80 90 100 0 40 50 60 70 Ambient Temperature (C) www.murata-ps.com/support MDC_BWR15-17W.B10 Page 8 of 9 BWR Series 15-17W, Dual Output DC/DC Converters Typical Performance Curves Start-Up from VIN to VOUT (VIN = 48V to Full Load) Start-Up from On/Off to VOUT (VIN = 48V to Full Load) VIN 50V/div Control Pin 5V/div -VOUT -VOUT VOUT 5V/div VOUT 5V/div +VOUT +VOUT 10msec/div 10msec/div Adaptations Soldering Guidelines Several different additional converter configurations are available. Generally, these are modifications of an existing standard product. In some cases, they are designated with an additional 5-digit suffix on the end of the root parent standard model number. The actual details of the modification are contained in a Specification Control Drawing maintained by MPS and tracked using this same 5-digit special number suffix. These adapted products are normally built in the same production facilities and to the same quality standards as catalog products. Usually, they share the same components. 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. Be cautious when there is high atmospheric humidity. We strongly recommend a mild pre-bake (100 C. for 30 minutes). Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers. Once a modified product has been configured and supplied to a customer, it may be available as a "standard" product to other customers, assuming there is no proprietary status or other restriction. There may be scheduling and minimum order requirements for such products. Contact Murata Power Solutions directly if you are interested in your own set of adaptations or modifications. Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED 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 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. (c) 2012 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_BWR15-17W.B10 Page 9 of 9