UEI Series www.murata-ps.com 50-60W Isolated Wide-Range DC/DC Converters Featuring a full 50-60 Watt output in 2.9 square inches of board area, the UEI series isolated DC/DC converter family offers efficient regulated DC power for printed circuit board mounting. Typical unit PRODUCT OVERVIEW Wide range 4:1 inputs on the 1.50" x 1.90" x logic and FPGA’s. No minimum load is required. FEATURES 0.38" converter are either 9 to 36 Volts DC (Q12 For systems requiring controlled startup/shut- models) or 18 to 75 Volts DC (Q48 models), ideal down, an external switch, transistor or digital logic Small footprint DC/DC converter, ideal for high for battery-powered and telecom equipment. may be used to activate the remote On/Off control. current applications Fixed output voltages from 3.3 VDC to 15 VDC are Remote Sense inputs compensate for resistive line Industry standard 1.50˝ x 1.90˝ x 0.38˝ open regulated to within ±0.05% and may be trimmed drops at high currents. frame package and pinout within ±10% of nominal output. Applications A wealth of self-protection features avoid both Wide range input voltages 9-36 and 18-75Vdc include small instruments, computer-based converter and external circuit problems. These Assembly and attachment for RoHS standards systems, data communications equipment, remote include input undervoltage lockout, input overvolt- sensor systems, vehicle and portable electronics. age and overtemperature shutdown. The outputs Isolation up to 2250 VDC (basic) The UEI 50-60W Series includes full magnetic current limit using the “hiccup” autorestart Up to 50-60W total output power with and optical isolation up to 2250 Volts DC (basic technique and the outputs may be short-circuited overtemperature shutdown insulation). For connection to digital systems, the indefi nitely. Additional features include output High effi ciency synchronous rectifi er forward outputs offer fast settling to current step loads overvoltage and reverse conduction elimination. topology and tolerance of higher capacitive loads. Excellent The synchronous rectifi er forward topology offers Stable no-load operation with no required ripple and noise specifi cations assure compatibil- high effi ciency for minimal heat buildup and “no ity to circuits using CPU’s, ASIC’s, programmable fan” operation. external components –40 to +85°C temperature range with derating Certifi ed to UL60950-1, CSA-C22.2 No. 234, EN60950-1, 2nd Edition safety approvals Extensive self-protection shut down features RoHS-6 compliant SIMPLIFIED SCHEMATIC +VOUT +VIN GATE DRIVE –VIN –VOUT ISOLATION BARRIER +SENSE On/Off Control Control TRIM OPTO Reference, trim & –SENSE ISOLATION Error Amplifier Typical topology is shown. For full details go to Figure 1. Simplifi ed block diagram www.murata-ps.com/rohs www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 1 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Input Package Power R/N (mVp-p) Regulation (Max.) Effi ciency VOUT IOUT NVoImN . Range noI IlNo,a d IIN, full (V) (A) (W) Typ. Max. Line Load (V) load (A) Min. Typ. Sense Case Pinout  (V) (mA) Root Model Input UEI-3.3/15-Q12PR-C 3.3 15.0 49.5 15 30 ±0.05% ±0.06% 24 9-36 130 2.33 86.8% 88.5% yes C74 P52 UEI-3.3/18-Q48NR-C 3.3 18.0 59.4 60 125 ±0.075% ±0.2% 48 18-75 130 1.38 87% 89.5% yes C74 P52 UEI-5/10-Q12PR-C 5 10.0 50.0 35 50 ±0.1% ±0.1% 24 9-36 130 2.31 89% 90% yes C74 P52 UEI-5/12-Q48NR-C 5 12.0 60.0 70 100 ±0.1% ±0.15% 48 18-75 130 1.37 89.5% 91% yes C74 P52 UEI-12/4.2-Q12P-C 12 4.2 50.4 50 120 ±0.05% ±0.05% 24 9-36 130 2.35 87.8% 89.5% no C74 P51 UEI-12/5-Q48N-C 12 5.0 60.0 40 70 ±0.2% ±0.2% 48 18-75 130 1.42 87% 89.8% no C74 P51 UEI-15/3.3-Q12P-C 15 3.3 49.5 30 100 ±0.075% ±0.05% 24 9-36 130 2.29 88.3% 90% no C74 P51 UEI-15/4-Q48N-C 15 4.0 60.0 35 60 ±0.075% ±0.05% 48 18-75 50 1.40 87.5% 89.3% no C74 P51  These are partial model numbers. Please refer to the full model number structure for complete  Output capacitors are 1 μF ceramic || 10 μF electrolytic. Input cap is 22 μF, low ESR. ordering part numbers.  I/O caps are necessary for our test equipment and may not be needed for your application.  Sense input is not included for 12 VOUT and higher models. Sense is optional for 5 VOUT and lower.  All specifi cations are typical at nominal line voltage and full load, +25 deg.C. unless otherwise noted. See detailed specifi cations. PART NUMBER STRUCTURE UEI - 3.3 / 15 - Q12 P R H Lx - C Unipolar Wide Input RoHS-6 Hazardous Substance Compliance (does not claim EU RoHS exemption 7b–lead in solder) Nominal Output Voltage Pin Length Option Blank = standard pin length 0.25 in. (6.35 mm) Maximum Rated Output L1 = 0.110 in. (2.79 mm)* Current in Amps L2 = 0.145 in. (3.68 mm)* Conformal Coating Option Input Voltage Range: Blank = No coating, standard Q12 = 9-36V H = Coating added, optional Q48 = 18-75V (built to order; contact Murata Power Solutions for MOQ and lead times.)* On/Off Control Logic: Sense Inputs (5 VOUT and lower): P = Positive R = Sense included as standard (for 5 VOUT and lower models only. 12 VOUT and higher N = Negative models do not offer the sense option.) Positive “P” logic is standard for Q12 models and optional special Blank = Sense not installed for 5 VOUT and lower models. Pins 5 and 8 omitted. order for Q48 models. Negative “N” logic is standard for Q48 models and optional special order for Q12 models. *Minimum order quantity is required. Samples available with standard pin length only. Note: Some model number combinations may not be available. See website or contact your local Murata sales representative. www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 2 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters FUNCTIONAL SPECIFICATIONS INPUT CHARACTERISTICS Under- Refl ected Input Current Remote On/Off Control Recom- Internal Start-up voltage (back) Reverse Model Family VIN threshold Sdohwutn- CRuirprepnlet 2 ITnsriraeunns-th OCSuihrtcopurutitt LLionwe StMaonddeby mFeunsdeed IFTniylptpeuert PrPootleacrtitioy nCOunr/rOefnft Positive Logic Negative Logic V V V mA pk-pk A2sec mA A mA A mA “P” model suffi x “N” model suffi x UEI-3.3/15-Q12 24 9.5 8.5 6.25 12 UEI-3.3/18-Q48 48 17.3 16.0 3.71 6 UEI-5/10-Q12 24 9.5 8.25 6.21 12 OFF=Gnd pin or OFF=open pin 30 None –0.7 to +1.2V or +10 to +15V UEI-5/12-Q48 48 17.3 16.0* 3.70 6 0.05 50 1 L-C - see 1 max. ON=open max. ON=Gnd UEI-12/4.2-Q12 24 9.5 8.5 6.31 10 notes pin or +10 to pin or –0.7 to UEI-12/5-Q48 48 17.5 16.7 3.88 6 +15V max. +1.2V max. UEI-15/3.3-Q12 24 9.5 8.5 45 6.15 9 UEI-15/4-Q48 48 17.2 16.3 30 3.77 6 *At 50% load OUTPUT CHARACTERISTICS Model Family MIOAaUxT. 5%A0c %ocVfuO LUVraToN caOyMd A%dRj uoasfn tVmgNeeOMn t %TCe mooefp fVefi OrcUaiTet un/ºrtCe %CRoe ommf poVteOenU sTS aemtniaosxne. CLaopwa cEiStiRve, r μLeoFsaisdtiinveg lMoaadx. aHfitceOcrpv ufreaporu tvaelVotuc ltrttoieao-mgnseot avratl Minimum loading OV protection method Ripple/Noise(20 MHz 8bandwidth) Line/Load Regulation Effi ciency UEI-3.3/15-Q12 15 ±2 +5 3.9 UEI-3.3/18-Q48 18 +5 3.9 UEI-5/10-Q12 10 +5 5.9 No UEI-5/12-Q48 12 +5 6.4 mini- Magnetic ±10 ±0.02 2,000 See ordering guide UEI-12/4.2-Q12 4.2 ±1 16.5 mum feedback UEI-12/5-Q48 5 16 load Not Available UEI-15/3.3-Q12 3.3 24 UEI-15/4-Q48 4 21.5 Absolute Maximum Ratings ABSOLUTE MAXIMUM RATINGS Absolute maximums are stress ratings. Exposure of devices to Volts, max. continuous 0-36 VDC to rated specifi cations Q12 models greater than any of these conditions may adversely affect long-term Volts, transient, 100 mSec 50 VDC, no damage Input Voltage Volts, max. continuous 0-75 VDC to rated specifi cations reliability. Proper operation under conditions other than those listed Q48 models Volts, transient, 100 mSec 100 VDC, no damage in the Performance/Functional Specifi cations Table is not implied nor On/Off control, referred to –Vin -0.7 V. min to +15V max. recommended. Input Reverse Polarity Protection See fuse section Maximum Ratings Notes Output Overvoltage VOUT nom. +20% max. The UEI-50/60W series does not include electronic Input Overvoltage Current-limited. Devices can Protection. Therefore it is possible for the input to exceed the con- withstand sustained short circuit Output Current without damage. The outputs are tinuous ratings listed above and still operate. However, units are not not intended to accept appreci- routinely Production-tested above the continuous ratings. Therefore, able reverse current. the rated specifi cations do not apply at excessive input voltage and Device includes electronic over- performance is undetermined. Overtemperature Protection temperature shutdown protection under normal operation. The transient specifi cations indicate that sample lots were suc- Storage Temperature -55 to +125° C. cessfully tested for 100 mS at the transient stress voltage and were Lead Temperature See soldering specifi cations not damaged. As a practical matter in your application, it is often diffi cult to determine how long an input overvoltage was applied. Therefore, do not exceed the continuous voltage rating. www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 3 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters ISOLATION CHARACTERISTICS DYNAMIC CHARACTERISTICS Start-up Time Input to Isolation Dynamic Load Model Family Output. Resistance CaIspoalcaittiaonnc e IsolaRtiaotnin Sgafety Model Family (5R0e-s7p5o-n5s0e% VrIeNg tuol aVtOeUdT Remtoot eV OOUnT/Off FSrweqitucehnincgy Min Min load step) (Max.) regulated (Max.) VDC MΩ pF μsec mSec mSec KHz UEI-3.3/15-Q12 2000 10 UEI-3.3/15-Q12 100 to 2% VOUT 275 UEI-3.3/18-Q48 2250 10 UEI-3.3/18-Q48 180 to 2% VOUT 280 UEI-5/10-Q12 2000 10 UEI-5/10-Q12 200 to 2% VOUT UEI-5/12-Q48 2250 10 Basic UEI-5/12-Q48 100 to 2% VOUT 275 1000 50 50 UEI-12/4.2-Q12 2000 10 insulation UEI-12/4.2-Q12 200 to 1% VOUT UEI-12/5-Q48 2250 10 UEI-12/5-Q48 400 to 1% VOUT 250 UEI-15/3.3-Q12 2000 10 UEI-15/3.3-Q12 150 to 1% VOUT 265 UEI-15/4-Q48 2250 10 UEI-15/4-Q48 150 to 1% VOUT 255 MISCELLANEOUS CHARACTERISTICS Output Current Output Output Output Relative Limit Inception Storage Thermal Short Short Short Circuit Calculated Humidity, Model Family 98% of VOUT, Circuit Circuit Duration Pres-ebtiuapsed MTBF OperatinRga Tnegmeperature temrpaenrgaeture psrhoutetdcotiwonn/ non- after warmup Protection Current (output shorted condensing Method to ground) A A Hours ºC ºC ºC UEI-3.3/15-Q12 20 3,858,079 UEI-3.3/18-Q48 23 UEI-5/10-Q12 13 Current limiting, Monotonic –40 to +85ºC; UEI-5/12-Q48 15.5 To +85ºC/ hiccup 0.5 Continuous (external with Derating –55 to 125ºC 115 UEI-12/4.2-Q12 6 2,000,000 85% auto VOUT < VSET) (see Notes) UEI-12/5-Q48 6.1 restart UEI-15/3.3-Q12 5.3 UEI-15/4-Q48 5.8 Specifi cation Notes: as much output fi ltering as needed to achieve your noise requirements. Excessive output capacitance can retard transient response or possibly cause instability. Low ESR ceramic capacitors may degrade (1) All models are tested and specifi ed with external 1||10 μF output capacitors and a 22 μF external dynamic performance. Be sure to thoroughly test your system under full load with all components input capacitor. All capacitors are low ESR types. These capacitors are necessary to accommodate installed. our test equipment and may not be required to achieve specifi ed performance in your applications. All (9) All models are fully operational and meet published specifi cations, including “cold start” at –40°C. models are stable and regulate within spec under no-load conditions. (10) Regulation specifi cations describe the deviation as the line input voltage or output load current is All specifi cations are typical unless noted. General conditions for Specifi cations are +25 deg.C, varied from a nominal midpoint value to either extreme. Vin=nominal, Vout=nominal, full load. Adequate airfl ow must be supplied for extended testing under (11) The output overvoltage protection is automatic recovery. The overvoltage may occur either from power. internal failure or from an external forcing voltage as in a shared power system. (2) Input Back Ripple Current is tested and specifi ed over a 5 Hz to 20 MHz bandwidth. Input fi ltering (12) Output current limit and short circuit protection is non-latching. When the overcurrent fault is is Cin=33 μF, 100V, Cbus=220 μF, 100V, Lbus=12 μH. removed, the converter will immediately recover. After an output overcurrent or short circuit, “hiccup” (3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage. operation repeatedly attempts to restart the converter with a brief, full-current output. If the overcur- At higher temperatures and/or lower airfl ow, the DC/DC converter will tolerate brief full current rent condition still exists, the restart current will be removed and then tried again. This short current outputs if the total RMS current over time does not exceed the Derating curve. All Derating curves pulse prevents overheating and damaging the converter. Once the fault is removed, the converter are presented at sea level altitude. Be aware of reduced power dissipation with increasing density immediately resumes normal operation. altitude. (13) Do not exceed maximum power specifi cations when adjusting the output trim. (4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3, (14) At zero output current, the output may contain low frequency components which exceed the ground fi xed conditions, Tpcboard=+25 deg.C, full load, natural air convection. ripple specifi cation. The output may be operated indefi nitely with no load. (5) The On/Off Control is normally selected by a switch or an open collector or open drain transistor. (15) If reverse polarity is accidentally applied to the input, to ensure reverse input protection with full But it may also be driven with external logic or by applying appropriate external voltages which are output load, always connect an external input fuse in series with the +Vin input. Use approximately referenced to Input Common and do not exceed the On/Off voltage specifi cations. twice the full input current rating with nominal input voltage. (6) Output current limiting begins when the output voltage degrades approximately 2% from the CAUTION: This product is not internally fused. To comply with safety agency certifi cations and to selected setting. avoid injury to personnel or equipment, the user must connect an external fast-blow fuse to the input (7) The outputs are not intended to sink appreciable reverse current. terminals. See fuse information. (8) Output noise may be further reduced by adding an external fi lter. Low voltage logic circuits may have a small voltage margin between logic ZERO and logic ONE, requiring noise suppression. Use only www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 4 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters Typical Performance Curves UEI-3.3/15-Q12 UEI-3.3/15-Q12N Maximum Current Temperature Derating at Sea Level Efficiency vs. Line Voltage and Load Current @ 25ºC (VIN = 24V, air flow is from pin 2 to pin 1) 90 15.5 85 15.0 VIN = 10V Efficiency (%) 778050 VIN =V 3IN6 =V V24INV = 12V utput Current (Amps) 111344...505 Natural C1o20n00v0 eL cLFtFMioMn O 13.0 65 12.5 60 12.0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (°C) UEI-3.3/18-Q48 UEI-3.3/18-Q48N Maximum Current Temperature Derating at Sea Level Efficiency vs. Line Voltage and Load Current @ 25ºC (VIN = 48V air flow direction is transverse) 90 18.0 88 17.5 86 VIN = 18V 17.0 s) %) 84 VIN = 24V mp 16.5 Efficiency ( 788802 VIN =V 4IN8 V= 36V ut Current (A 1156..50 Natural Convection 76 VIN = 60V Outp 15.0 100 LFM 74 VIN = 75V 14.5 200 LFM 300 LFM 72 14.0 400 LFM 70 13.5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (°C) UEI-5-10-Q12 UEI-5/10-Q12N Maximum Current Temperature Derating at Sea Level Efficiency vs. Line Voltage and Load Current @ 25ºC (VIN = 24V, airflow is from pin 2 to pin 1) 100 10.5 90 10.0 80 ps) 9.5 %) VIN = 10V m Natural Convection Efficiency ( 6700 VIN =V 3IN6 V= 24V ut Current (A 89..50 p ut 50 O 8.0 40 7.5 30 7.0 1 2 3 4 5 6 7 8 9 10 40 45 50 55 60 65 70 75 80 85 Load Current (Amps) Ambient Temperature (°C) www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 5 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters Typical Performance Curves UEI-5/12-Q48 UEI-5/12-Q48N Maximum Current Temperature Derating at Sea Level Efficiency vs. Line Voltage and Load Current @ 25ºC (VIN = 48V, air flow is from pin 1 to pin 2) 92 12 90 88 11.5 86 ency (%) 8824 VIN =V I2N 4=V 18V ent (Amps) 101.15 Natural Convection Effici 80 VIN = 36V ut Curr 10 100 LFM 78 VIN = 48V Outp 9.5 200 LFM VIN = 60V 300 LFM 76 VIN = 75V 9 400 LFM 74 8.5 72 1 2 3 4 5 6 7 8 9 10 11 12 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (°C) UEI-12/4.2-Q12 UEI-12/4.2-Q12 Maximum Current Temperature Derating at Sea Level Efficiency vs. Line Voltage and Load Current @ 25ºC (VIN = 24V, airflow is from pin 1 to pin 2) 92.5 4.25 90.0 87.5 4.20 85.0 VIN = 9V 4.15 82.5 s) %) 80.0 VIN = 24V mp 4.10 Natural Convection Efficiency ( 77770257....0505 VIN = 36V put Current (A 44..0005 123000000 LLLFFFMMM ut 3.95 67.5 O 65.0 3.90 62.5 3.85 60.0 0.31 0.69 1.13 1.48 1.87 2.25 2.64 3.01 3.42 3.81 4.20 3.80 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (°C) UEI-12/5-Q48 UEI-12/5-Q48 Maximum Current Temperature Derating at Sea Level Efficiency vs. Line Voltage and Load Current @ 25ºC (VIN = 48V, air flow is from pin 2 to pin 1) 92 90 5.2 88 4.95 86 84 VIN = 18V s) 4.7 Efficiency (%) 77886802 VIN = V7I5NV =V 4I8N V= V3I6NV = 24V ut Current (Amp 344...94255 Natural Co12n00v00e cLLtFFioMMn p 74 Out 3.7 300 LFM 72 70 3.45 400 LFM 68 3.2 66 0.5 1 1.75 2.5 3 3.5 4 4.5 5 2.95 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 Load Current (Amps) Ambient Temperature (°C) www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 6 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters Typical Performance Curves UEI-15/3.3-Q12 UEI-15/3.3-Q12 Maximum Current Temperature Derating at Sea Level Efficiency vs. Line Voltage and Load Current @ 25ºC (VIN = 12V, open frame, air flow is from pin 1 to pin 2) 92.0 3.3 89.5 3.2 3.1 %) 87.0 mps) Natural Convection Efficiency ( 84.5 VIN =V 2I4N V= V1I2NV = 9V ut Current (A 223...890 123000000 LLLFFFMMM 82.0 VIN = 36V Outp 2.7 79.5 2.6 77.0 2.5 0.82 1.06 1.32 1.57 1.82 2.07 2.32 2.57 2.82 3.07 3.32 70 75 80 85 Load Current (Amps) Ambient Temperature (°C) UEI-15/3.3-Q12 Maximum Current Temperature Derating at Sea Level UEI-15/4-Q48N-C (VIN = 24V, open frame, air flow is from pin 1 to pin 2) Efficiency vs. Line Voltage and Load Current @ 25ºC 92 3.3 91 90 3.2 89 88 ut Current (Amps) 2233....8901 Natural Co123n000v000e cLLLtFFFioMMMn Efficiency (%) 888888246357 VIN = V7I5N V= 4V8VIN =V I2N 4=V 18V utp 81 O 2.7 80 79 2.6 78 77 2.5 76 70 75 80 85 1.5 1.7 2.0 2.2 2.5 2.7 3.0 3.2 3.5 3.7 4.0 Ambient Temperature (°C) Load Current (Amps) UEI-15/4-Q48 Maximum Current Temperature Derating at Sea Level UEI-15/4-Q48 Maximum Current Temperature Derating at Sea Level (VIN = 24V, transverse airflow) (VIN = 48V, transverse airflow) 4.0 4.0 3.5 3.5 ps) ps) m Natural Convection m A A Current ( 3.0 120000 LLFFMM Current ( 3.0 Natural Co1n0v0e cLtFioMn Output 300 LFM Output 200 LFM 2.5 400 LFM 2.5 300 LFM 400 LFM 2.0 2.0 25 30 35 40 45 50 55 60 65 70 75 80 85 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (°C) Ambient Temperature (°C) www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 7 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters MECHANICAL SPECIFICATIONS INPUT/OUTPUT CONNECTIONS, WITH SENSE INPUT/OUTPUT CONNECTIONS, WITHOUT SENSE Pin Function P52 Pin Function P52 Pin Function P51 Pin Function P51 5 +Sense In 5 No pin 1 Positive Input 6 Positive Output 1 Positive Input 6 Positive Output 2 Negative Input No pin 2 Negative Input No pin 3 No pin 7 Negative Output 3 No pin 7 Negative Output 4 On/Off Control In 8 –Sense In 4 On/Off Control In 8 No pin 9 Trim 9 Trim Important: If sense inputs are not connected to a remote load, connect them Pins 5 and 8 are omitted for models without sense inputs. to their respective VOUT pins at the converter. TOP VIEW PHYSICAL CHARACTERISTICS Outline dimensions See mechanical specs 1.90 Copper alloy with gold plate over (48.3) Pin material nickel underplate Pin diameter 0.04" (1mm) 9 4 8 Pin Finish Gold plate 7 Weight 1 oz (28.5g) 2 1.50 (38.1) Meets class B, EN55022/CISPR22 1 Electromagnetic interference 6 (requires external fi lter) 5 Flammability Rating UL 94V-0 Certifi ed to IEC/EN/UL/cUL 60950-1, Safety CSA-C22.2 No. 60950-1, 2nd Edition SIDE VIEW 0.25 6.35 0.38 (9.7) * .010MIN .040±.002 PINS 0.25MIN 1.02±0.05 CLEARANCE *Please refer to part number structure (page 2) for pin length. BOTTOM VIEW CL .900 22.86 .200 .100 .100 5.08 2.54 2.54 5 6 .400 Dimensions are in inches (mm shown for ref. only). 1 10.16 CL CL Third Angle Projection .500 2 7 1.04.0106 .600 12.70 4 8 15.24 9 .200 5.08 CL Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) 1.800 .XXX ± 0.010 (0.25) 0.05 (1.3) 45.72 0.05 (1.3) Angles ± 2˚ Components are shown for reference only. UEI50 Open Frame 50-60W Case C74 www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 8 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters RECOMMENDED FOOTPRINT (VIEW THROUGH CONVERTER) TOP VIEW 1.92 FINISHED HOLE SIZES @ PINS 1-2, 4-9 48.8 (PER IPC-D-275) 1.800 .048-.062 45.72 MINIMUM COURTYARD .96 24.4 .200 5.08 .200 4 9 .76 5.08 8 .600 19.2 .400 7 15.24 1.51 2 10.16 CL CL 38.4 .400 1 6 10.16 5 .100 2.54 .200 5.08 .90 22.9 CL .100 MIN 2.54 ANNULAR RING FOR PIN SHOULDERS IT IS RECOMMENDED THAT NO PARTS BE PLACED BENEATH CONVERTER 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_UEI Series 50-60W.C10 Page 9 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters SHIPPING TRAYS: LOW DENSITY CLOSED CELL POLYETHYLENE STATIC DISSIPATIVE FOAM 9.920 -+.0.06020 'T' 1.825 TYP 9.920 +-.0.06020 DASH NUMBER 'T' DIMENSION -1 0.50" 0.625 TYP -2 1.00" 2.400 TYP 0.735 C L 0.725 TYP .25 R TYP 1.450 .25 CHAMFER TYP (4-PL) TYP SHIPPING BOXES Anti-static foam Box accommodates 4 trays, yielding 60 converters per box. 4 trays of 15 Dimensions are in inches (mm shown for ref. only). Third Angle Projection 01(4 Label top side 9.752. 5 ) Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) 10 1 0 .AXnXgXle ±s ±0. 021˚0 (0.25) (254) (2 5 4) Components are shown for reference only. www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 10 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters impedance, performance is improved by adding external fi lter components. TECHNICAL NOTES Sometimes only a small ceramic capacitor is suffi cient. Since it is diffi cult to Input Fusing totally characterize all applications, some experimentation may be needed. Certain applications and/or safety agencies may require fuses at the inputs of Note that external input capacitors must accept high speed switching currents. power conversion components. Fuses should also be used when there is the possibility of sustained input voltage reversal which is not current-limited. We Because of the switching nature of DC/DC converters, the input of these recommend a time delay fuse installed in the ungrounded input supply line converters must be driven from a source with both low AC impedance and with a value which is approximately twice the maximum line current, calcu- adequate DC input regulation. Performance will degrade with increasing input lated at the lowest input voltage. inductance. Excessive input inductance may inhibit operation. The DC input regulation specifi es that the input voltage, once operating, must never degrade The installer must observe all relevant safety standards and regulations. For below the Shut-Down Threshold under all load conditions. Be sure to use safety agency approvals, install the converter in compliance with the end-user adequate trace sizes and mount components close to the converter. safety standard. I/O Filtering, Input Ripple Current and Output Noise Input Reverse-Polarity Protection All models in this converter series are tested and specifi ed for input refl ected If the input voltage polarity is reversed, an internal diode will become forward ripple current and output noise using designated external input/output compo- biased and likely draw excessive current from the power source. If this source nents, circuits and layout as shown in the fi gures below. External input capaci- is not current-limited or the circuit appropriately fused, it could cause perma- tors (CIN in fi gure 2) serve primarily as energy storage elements, minimizing nent damage to the converter. line voltage variations caused by transient IR drops in the input conductors. Input Under-Voltage Shutdown and Start-Up Threshold Users should select input capacitors for bulk capacitance (at appropriate frequencies), low ESR and high RMS ripple current ratings. In the fi gure below, Under normal start-up conditions, converters will not begin to regulate properly until the ramping-up input voltage exceeds and remains at the Start-Up the CBUS and LBUS components simulate a typical DC voltage bus. Your specifi c system confi guration may require additional considerations. Please note that the Threshold Voltage (see Specifi cations). Once operating, converters will not turn off until the input voltage drops below the Under-Voltage Shutdown Limit. values of CIN, LBUS and CBUS will vary according to the specifi c converter model. 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 opera- TO OSCILLOSCOPE CURRENT tion at a single input voltage. PROBE +VIN Users should be aware however of input sources near the Under-Voltage + LBUS Shutdown whose voltage decays as input current is consumed (such as capaci- tor inputs), the converter shuts off and then restarts as the external capacitor VIN +– CBUS CIN recharges. Such situations could oscillate. To prevent this, make sure the operat- – ing input voltage is well above the UV Shutdown voltage AT ALL TIMES. −VIN Start-Up Time CIN = 33μF, ESR < 700mΩ @ 100kHz Assuming that the output current is set at the rated maximum, the Vin to Vout Start- CBUS = 220μF, ESR < 100mΩ @ 100kHz LBUS = 12μH Up Time (see Specifi cations) is the time interval between the point when the ramping input voltage crosses the Start-Up Threshold and the fully loaded regulated output Figure 2. Measuring Input Ripple Current voltage enters and remains within its specifi ed accuracy band. Actual measured times will vary with input source impedance, external input capacitance, input volt- age slew rate and fi nal value of the input voltage as it appears at the converter. These converters include a soft start circuit to moderate the duty cycle of its +SENSE PWM controller at power up, thereby limiting the input inrush current. +VOUT The On/Off Remote Control interval from On command to VOUT regulated C1 C2 SCOPE RLOAD 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 −VOUT On command until the output enters and remains within its specifi ed accuracy band. The specifi cation assumes that the output is fully loaded at maximum −SENSE rated current. Similar conditions apply to the On to VOUT regulated specifi cation such as external load capacitance and soft start circuitry. C1 = 1μF CERAMIC C2 = 10μF LOW ES Input Source Impedance LOAD 2-3 INCHES (51-76mm) FROM MODULE These converters will operate to specifi cations without external components, Figure 3. Measuring Output Ripple and Noise (PARD) assuming that the source voltage has very low impedance and reason- able input voltage regulation. Since real-world voltage sources have fi nite www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 11 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters In critical applications, output ripple and noise (also referred to as periodic applications. Sometimes it is possible to estimate the effective airfl ow if you and random deviations or PARD) may be reduced by adding fi lter elements thoroughly understand the enclosure geometry, entry/exit orifi ce areas and the such as multiple external capacitors. Be sure to calculate component tem- fan fl owrate specifi cations. If in doubt, contact MPS to discuss placement and perature rise from refl ected AC current dissipated inside capacitor ESR. Our measurement techniques of suggested temperature sensors. Application Engineers can recommend potential solutions. CAUTION: If you routinely or accidentally exceed these Derating guidelines, Floating Outputs the converter may have an unplanned Over Temperature shut down. Also, these Since these are isolated DC/DC converters, their outputs are “fl oating” with graphs are all collected at slightly above Sea Level altitude. Be sure to reduce respect to their input. The essential feature of such isolation is ideal ZERO the derating for higher density altitude. CURRENT FLOW between input and output. Real-world converters however do Output Overvoltage Protection exhibit tiny leakage currents between input and output (see Specifi cations). This converter monitors its output voltage for an over-voltage condition using These leakages consist of both an AC stray capacitance coupling component an on-board electronic comparator. The signal is optically coupled to the pri- and a DC leakage resistance. When using the isolation feature, do not allow mary side PWM controller. If the output exceeds OVP limits, the sensing circuit the isolation voltage to exceed specifi cations. Otherwise the converter may will power down the unit, and the output voltage will decrease. After a time-out be damaged. Designers will normally use the negative output (-Output) as period, the PWM will automatically attempt to restart, causing the output volt- the ground return of the load circuit. You can however use the positive output age to ramp up to its rated value. It is not necessary to power down and reset (+Output) as the ground return to effectively reverse the output polarity. the converter for the this automatic OVP-recovery restart. Minimum Output Loading Requirements If the fault condition persists and the output voltage climbs to excessive These converters employ a synchronous rectifi er design topology. All models levels, the OVP circuitry will initiate another shutdown cycle. This on/off cycling regulate within specifi cation and are stable under no load to full load conditions. is referred to as “hiccup” mode. It safely tests full current rated output voltage Operation under no load might however slightly increase output ripple and noise. without damaging the converter. Thermal Shutdown Output Fusing To prevent many over temperature problems and damage, these converters The converter is extensively protected against current, voltage and temperature include thermal shutdown circuitry. If environmental conditions cause the extremes. However your output application circuit may need additional protection. temperature of the DC/DC’s to rise above the Operating Temperature Range In the extremely unlikely event of output circuit failure, excessive voltage could be up to the shutdown temperature, an on-board electronic temperature sensor applied to your circuit. Consider using an appropriate fuse in series with the output. 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 Output Current Limiting hysteresis to prevent rapid on/off cycling. As soon as the output current increases to approximately 125% to 150% of CAUTION: If you operate too close to the thermal limits, the converter may shut its maximum rated value, the DC/DC converter will enter a current-limiting down suddenly without warning. Be sure to thoroughly test your application to mode. The output voltage will decrease proportionally with increases in output avoid unplanned thermal shutdown. current, thereby maintaining a somewhat constant power output. This is com- monly referred to as power limiting. Temperature Derating Curves The graphs in this data sheet illustrate typical operation under a variety of condi- Current limiting inception is defi ned as the point at which full power falls tions. The Derating curves show the maximum continuous ambient air temperature below the rated tolerance. See the Performance/Functional Specifi cations. Note and decreasing maximum output current which is acceptable under increasing particularly that the output current may briefl y rise above its rated value. This forced airfl ow measured in Linear Feet per Minute (“LFM”). Note that these are enhances reliability and continued operation of your application. If the output AVERAGE measurements. The converter will accept brief increases in temperature current is too high, the converter will enter the short circuit condition. and/or current or reduced airfl ow as long as the average is not exceeded. Output Short Circuit Condition Note that the temperatures are of the ambient airfl ow, not the converter When a converter is in current-limit mode, the output voltage will drop as the itself which is obviously running at higher temperature than the outside air. output current demand increases. If the output voltage drops too low, the mag- Also note that “natural convection” is defi ned as very fl ow rates which are not netically coupled voltage used to develop primary side voltages will also drop, using fan-forced airfl ow. Depending on the application, “natural convection” is thereby shutting down the PWM controller. Following a time-out period, the usually about 30-65 LFM but is not equal to still air (0 LFM). PWM will restart, causing the output voltage to begin ramping up to its appro- priate value. If the short-circuit condition persists, another shutdown cycle will MPS makes Characterization measurements in a closed cycle wind initiate. This on/off cycling is called “hiccup mode”. The hiccup cycling reduces tunnel with calibrated airfl ow. We use both thermocouples and an infrared the average output current, thereby preventing excessive internal tempera- camera system to observe thermal performance. As a practical matter, it is tures. A short circuit can be tolerated indefi nitely. quite diffi cult to insert an anemometer to precisely measure airfl ow in most www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 12 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters Remote Sense Input Trimming the Output Voltage Sense inputs compensate for output voltage inaccuracy delivered at the load. The Trim input to the converter allows the user to adjust the output voltage over This is done by correcting voltage drops along the output wiring such as mod- the rated trim range (please refer to the Specifi cations). In the trim equations and erate IR drops and the current carrying capacity of PC board etch. Sense inputs circuit diagrams that follow, trim adjustments use either a trimpot or a single also improve the stability of the converter and load system by optimizing the fi xed resistor connected between the Trim input and either the +Sense or –Sense control loop phase margin. terminals. (On some converters, an external user-supplied precision DC voltage may also be used for trimming). Trimming resistors should have a low tempera- Note: The Sense input and power Vout lines are internally connected through ture coeffi cient (±100 ppm/deg.C or less) and be mounted close to the converter. low value resistors to their respective polarities so that the converter can Keep leads short. If the trim function is not used, leave the trim unconnected. operate without external connection to the Sense. Nevertheless, if the Sense With no trim, the converter will exhibit its specifi ed output voltage accuracy. function is not used for remote regulation, the user should connect +Sense to +VOUT and –Sense to –VOUT at the converter pins. There are two CAUTION’s to be aware for the Trim input: The remote Sense lines carry very little current. They are also capacitively CAUTION: To avoid unplanned power down cycles, do not exceed EITHER the coupled to the output lines and therefore are in the feedback control loop to maximum output voltage OR the maximum output power when setting the trim. regulate and stabilize the output. As such, they are not low impedance inputs Be particularly careful with a trimpot. If the output voltage is excessive, the and must be treated with care in PC board layouts. Sense lines on the PCB OVP circuit may inadvertantly shut down the converter. If the maximum power should run adjacent to DC signals, preferably Ground. In cables and discrete is exceeded, the converter may enter current limiting. If the power is exceeded wiring, use twisted pair, shielded tubing or similar techniques. for an extended period, the converter may overheat and encounter overtem- perature shut down. Please observe Sense inputs tolerance to avoid improper operation: CAUTION: Be careful of external electrical noise. The Trim input is a senstive [VOUT(+) –VOUT(-)] – [ Sense(+) – Sense(-)] ≤ 10% of VOUT input to the converter’s feedback control loop. Excessive electrical noise may Output overvoltage protection is monitored at the output voltage pin, not the cause instability or oscillation. Keep external connections short to the Trim Sense pin. Therefore excessive voltage differences between Vout and Sense input. Use shielding if needed. together with trim adjustment of the output can cause the overvoltage protec- tion circuit to activate and shut down the output. +VOUT +VIN Power derating of the converter is based on the combination of maximum output current and the highest output voltage. Therefore the designer must insure: +SENSE (VOUT at pins) x (IOUT) ≤ (Max. rated output power) 5-22 ON/OFF 7 TRIM TURNS LOAD CONTROL Contact and PCB resistance losses due to IR drops −SENSE +VOUT +VIN IOUT −VIN −VOUT +SENSE Sense Current ON/OFF TRIM LOAD Figure 5. Trim adjustments using a trimpot; if sense is omitted, CONTROL Sense Return connect trim pin to either +output or -output. −SENSE IOUT Return +VOUT −VIN -VOUT +VIN Contact and PCB resistance +SENSE losses due to IR drops Figure 4. Remote Sense Circuit Confi guration ON/OFF TRIM LOAD CONTROL RTRIMDOWN −SENSE −VIN −VOUT Figure 6. Trim adjustments to decrease Output Voltage using a Fixed Resistor; if sense is omitted, connect trim pin to +output. www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 13 of 14

UEI Series 50-60W Isolated Wide-Range DC/DC Converters Negative: Optional negative-logic devices are on (enabled) when the On/Off is grounded or brought to within a low voltage (see Specifi cations) with respect +VOUT +VIN to –VIN. The device is off (disabled) when the On/Off is left open or is pulled high to +15VDC Max. with respect to –VIN. +SENSE Dynamic control of the On/Off function should be able to sink appropriate signal current when brought low and withstand appropriate voltage when ON/OFF TRIM LOAD brought high. Be aware too that there is a fi nite time in milliseconds (see CONTROL R TRIMUP Specifi cations) between the time of On/Off Control activation and stable, regulated output. This time will vary slightly with output load type and current −SENSE and input conditions. There are two CAUTIONs for the On/Off Control: −VIN −VOUT CAUTION: While it is possible to control the On/Off with external logic if you Figure 7. Trim adjustments to increase Output Voltage using a Fixed Resistor; carefully observe the voltage levels, the preferred circuit is either an open if sense is omitted, connect trim pin to -output. drain/open collector transistor or a relay (which can thereupon be controlled by logic). Trim Equations Trim Up Trim Down CAUTION: Do not apply voltages to the On/Off pin when there is no input power voltage. Otherwise the converter may be permanently damaged. <Connect trim resistor <Connect trim resistor between Trim and –Sense> between Trim and +Sense> Where Vo = Desired output voltage. Adjustment accuracy is subject to resis- tor tolerances and factory-adjusted output accuracy. Mount trim resistor close to converter. Use short leads. + Vcc UEI-3.3/15-Q12, -3.3/18-Q48 RT U P () = V1O2 7–7 35.3 – 2050 RT D O W N () = 51130. 3(V –o V- O2 .5)– 2050 COONN/TORFOFL UEI-5/10-Q12, -5/12-Q48 -VIN 12775 5110 (Vo - 2.5) RT U P () = VO – 5 – 2050 RT D O W N () = 5 – VO – 2050 UEI-12/4.2-Q12, -12/5-Q48 Figure 8. Driving the On/Off Control Pin (suggested circuit) 25000 10000 (Vo-2.5) RT U P () = VO – 12 – 5110 RT D O W N () = 12 – VO –5110 UEI-15/3.3-Q12, UEI-15/4-Q48 Soldering Guidelines Murata Power Solutions recommends the specifi cations below when installing these 25000 10000 (Vo-2.5) RT U P () = VO – 15 – 5110 RT D O W N () = 15 – VO –5110 csponecveifi rcteartsio. nTsh emsaey s cpaeucsifie c daatimonasg vea troy tdheep pernoddiuncgt .o Yno tuhre p sroodlduecrt itoynp ee.n Evxircoenemdienngt tmheasye differ; therefore please thoroughly review these guidelines with your process engineers. Remote On/Off Control Wave Solder Operations for through-hole mounted products (THMT) On the input side, a remote On/Off Control can be ordered with either logic type. For Sn/Ag/Cu based solders: For Sn/Pb based solders: Positive: Standard models are enabled when the On/Off pin is left open or Maximum Preheat Temperature 115° C. Maximum Preheat Temperature 105° C. is pulled high to +15V with respect to –VIN. An internal bias current causes the open pin to rise to +15V. Some models will also turn on at lower intermediate Maximum Pot Temperature 270° C. Maximum Pot Temperature 250° C. voltages (see Specifi cations). Positive-logic devices are disabled when the On/ Maximum Solder Dwell Time 7 seconds Maximum Solder Dwell Time 6 seconds Off is grounded or brought to within a low voltage (see Specifi cations) with respect to –VIN. This product is subject to the following operating requirements Murata Power Solutions, Inc. and the Life and Safety Critical Application Sales Policy: 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 U.S.A. Refer to: http://www.murata-ps.com/requirements/ 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. Specifi cations are subject to change without notice. © 2014 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_UEI Series 50-60W.C10 Page 14 of 14

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: M urata: UEI-15/3.3-Q12N-C UEI-15/4-Q48P-C UEI-15/4-Q48N-C UEI-15/3.3-Q12P-C UEI-3.3/15-Q12NR-C UEI-3.3/15- Q12PR-C UEI-3.3/18-Q48NR-C UEI-3.3/18-Q48PR-C UEI-5/10-Q12NR-C UEI-5/10-Q12PR-C UEI-5/12-Q48NR-C UEI-5/12-Q48PR-C UEI-12/4.2-Q12P-C UEI-12/5-Q48N-C