UEI25-120

www.murata-ps.com PRODUCT OVERVIEW Featuring a full 25 Watt output in one square inch of board area, the UEI25 series isolated DC/DC converter family offers efficient regulated DC power for printed circuit board mounting. The 0.96" x 1.1" x 0.32" (24.38 x 27.94 x 8.13 mm) converter accepts a 2:1 input voltage range of 36 to 75 Volts DC, ideal for telecom equipment. The industry-standard pinout fits larger 1" x 2" converters. The fixed output voltage is tightly regulated. Applications include small instruments, area-limited microcontrollers, data communications equipment, remote sensor systems, telephone equipment, vehicle and portable electronics. The UEI25 series includes full magnetic and optical isolation with Basic protection up to 2250 Volts DC. For powering digital systems, the outputs offer UEI25-120 Series Single Output Isolated 25-Watt DC/DC Converters Typical unit FEATURES „ Small footprint DC/DC converter, ideal for high current applications „ Industry standard 0.96" x 1.1" x 0.32" open frame package and pinout „ Input voltage range of 36-75 Vdc „ 12Vdc fixed output „ Assembly and attachment for RoHS standards „ Isolation up to 2250 VDC (basic) „ Up to 25 Watts total output power with overtemperature shutdown „ High efficiency synchronous rectifier forward topology „ Stable operation with no required external components „ Usable -40 to 85°C temperature range (with derating) „ Certified to UL/EN 60950-1, CSA-C22.2 No. 60950-1, 2nd edition safety approvals (certification is pending) „ Extensive self-protection shut down features fast settling to step transients and will accept higher capacitive loads. Excellent ripple and noise specifications assure compatibility to noise-susceptible circuits. For systems requiring controlled startup/ shutdown, an external remote On/Off control may use a switch, transistor or digital logic. A wealth of self-protection features avoid both converter and external circuit faults. These include input undervoltage lockout and overtemperature shutdown. The outputs current limit using the “hiccup” autorestart technique and the outputs are short-circuit protected. Additional features include output overvoltage and reverse conduction elimination. The high efficiency offers minimal heat buildup and “no fan” operation. Contents Description, Photograph, Connection Diagram Ordering Guide, Model Numbering Mechanical Specifications, Input/Output Pinout UEI25-120-D48 Specifications and Performance Data Application Notes Page 1 2 3 4 8 F1 + Vin (1) B arrier +Vout (3) External DC Power Source On/Off Control (6) Controller and Power Open = On Reference and Error Amplifier Trim (4) p olarity) -Vin (2) - Vout (5) Figure 1. Connection Diagram Typical topology is shown. Murata Power Solutions recommends an external fuse. 　 For full details go to www.murata-ps.com/rohs (certification is pending) www.murata-ps.com 17 Aug 2010 email: sales@murata-ps.com MDC_UEI25-120.A02 Page 1 of 11 UEI25-120 Series Single Output Isolated 25-Watt DC/DC Converters PERFORMANCE SPECIFICATIONS AND ORDERING GUIDE ➀ Output R/N (mVp-p) Root Models ➀ UEI25-120-D48 ➃ Input Regulation (Max.) IIN, min. VIN Nom. Range load (V) (V) (mA) 48 36-75 20 VOUT (V) 12 IOUT Total (A, Power max) (W) Typ. ➁ Max. 2.1 25.2 95 120 Line ±0.1% Load ±0.1% IIN, full load (A) 0.6 Efficiency Package, C75 Min. Typ. Case (inches) 0.96x1.1x0.32 Case (mm) 24.38x27.94x8.13 Pinout P85 86.0% 87.5% Notes: ➀ Please refer to the part number structure for additional options and complete ordering part numbers. ➁ Ripple and Noise is shown at 20 MHz bandwidth. ➂ All specifications are at nominal line voltage and full load, +25 deg.C. unless otherwise noted. See detailed specifications for full conditions. (Note ➂ Continued) Output capacitors are 1 μF ceramic in parallel with 10 μF electrolytic. The input cap is 47 μF ceramic, low ESR. I/O caps are necessary for our test equipment and may not be needed for your application. ➃ UL certification is pending. PART NUMBER STRUCTURE UEI25 - 120 - D48 P Lx - C Unipolar Ouput Isolated 25-Watt Series Nominal Output Voltage in Tenths of a Volt RoHS-6 Hazardous Substance Compliance (Does not claim EU RoHS exemption 7b, lead in solder) Pin Length Option Blank = Std. pin length 0.25˝ (6.3mm) L1 = 0.110˝ (2.79mm)* L2 = 0.145˝ (3.68mm)* On/Off Control Polarity: P = Positive N = Negative Note: Some model number combinations may not be available. Contact Murata Power Solutions. Input Voltage Range D48 = 36-75 Vdc *Alternate pin lengths require quantity order. www.murata-ps.com 17 Aug 2010 email: sales@murata-ps.com MDC_UEI25-120.A02 Page 2 of 11 UEI25-120 Series Single Output Isolated 25-Watt DC/DC Converters MECHANICAL SPECIFICATIONS Dimensions are in inches (mm shown for ref. only). Case 75 Third Angle Projection 24.4 0.96 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 TOP VIEW INPUT/OUTPUT CONNECTIONS Pin Function P85 1 2 3 4 Positive Vin Negative Vin Positive Vout Output Trim Negative Vout On/Off Control* MOUNTING PLANE SIDE VIEW 8.1 0.32 MAX 5 6 *The Remote On/Off can be provided with either positive (P suffix) or negative (N suffix) polarity .040±.002 .071 .002 SHOULDER 6X AT PINS 1-6 These converters are plug-compatible to competitive units. In case of pinout numbering inconsistency, follow the pin FUNCTION, not the pin number when laying out your PC board. BOTTOM VIEW 20.32 0.800 0.58 2.54 0.100 0.41 #3 C L 5.08 0.200 #1 #2 #4 10.16 0.400 6.3 0.25 10.16 0.400 C L #5 0.15 TYP RECOMMENDED PRI-SEC BARRIER END VIEW 0.475 REF 10.16 0.400 C L 0.30 #6 Standard pin length is shown. Please refer to the Ordering Guide for alternate pin lengths. www.murata-ps.com 17 Aug 2010 email: sales@murata-ps.com MDC_UEI25-120.A02 Page 3 of 11 UEI25-120 Series Single Output Isolated 25-Watt DC/DC Converters FUNCTIONAL SPECIFICATIONS – MODEL UEI25-120-D48 ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Voltage, Transient Isolation Voltage Conditions ➀ Full power operation Operating or non-operating, 100 mS max. duration Input to output tested 100 mS IEC/EN/UL 60950-1 None, install external fuse Power on or off, referred to -Vin Minimum 0 0 Typical/Nominal Maximum 75 100 2250 Units Vdc Vdc Vdc Input Reverse Polarity None Vdc On/Off Remote Control 0 15 Vdc Output Power 0 25 W Output Current Current-limited, no damage, short-circuit protected 0 2.1 A Storage Temperature Range Vin = Zero (no power) -55 125 ˚C Absolute maximums 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 or recommended. INPUT Operating voltage range Recommended External Fuse Start-up threshold Undervoltage shutdown Overvoltage shutdown Reverse Polarity Protection Internal Filter Type Input current Full Load Conditions Low Line Inrush Transient Output in Short Circuit No Load Standby Mode (Off, UV, OT) Reflected (back) ripple current ➁ Pre-biased startup 36 Fast blow Rising input voltage Falling input voltage None, install external fuse 34 32 48 1.5 35.2 34.0 None None capacitive 0.600 0.809 0.05 50 20 1 30 Monotonic 86.0 2250 basic 10 1700 Certified to UL-60950-1, CSA-C22.2 No.609501, IEC/EN60950-1 (pending) Per MIL-HDBK-217F, ground benign, Tambient=+30˚C Per Telcordia SR332, issue 1, class 3, ground fixed, Tambient=+40°C 295 Power On to Vout regulated Remote ON to Vout regulated 50-75-50% load step, settling time to within ±1% of Vout same as above Yes TBD 2 325 10 10 100 ±250 355 50 50 200 1 ±350 Hours x 106 Hours x 106 KHz mS mS μSec A/μSec mV Mohm pF 87.5 75 36 35.2 Vdc A Vdc Vdc Vdc Vdc Vin = nominal Vin = minimum 0.617 0.842 100 35 2 Iout = minimum, unit=ON Measured at input with specified filter External output voltage < Vset Vin=48V, full load Input to output, continuous to IEC/EN/UL 60950-1 A A A2-Sec. mA mA mA mA, RMS GENERAL and SAFETY Efficiency Isolation Isolation Voltage Insulation Safety Rating Isolation Resistance Isolation Capacitance Safety Calculated MTBF Calculated MTBF % Vdc DYNAMIC CHARACTERISTICS Fixed Switching Frequency Startup Time Startup Time Dynamic Load Response Dynamic load di/dt Dynamic Load Peak Deviation FEATURES and OPTIONS Remote On/Off Control ➃ "N" suffix Negative Logic, ON state Negative Logic, OFF state Control Current "P" suffix Positive Logic, ON state Positive Logic, OFF state Control Current Pin open=OFF -0.7 10 1 10 -0.7 1 15 0.8 0.7 15 V V mA V V mA Pin open=ON www.murata-ps.com 17 Aug 2010 email: sales@murata-ps.com MDC_UEI25-120.A02 Page 4 of 11 UEI25-120 Series Single Output Isolated 25-Watt DC/DC Converters FUNCTIONAL SPECIFICATIONS (CONT.) – MODEL UEI25-120-D48 OUTPUT Total Output Power Voltage Nominal Output Voltage Setting Accuracy Output Voltage Range Overvoltage Protection Current Output Current Range Minimum Load ➂ Current Limit Inception Short Circuit Short Circuit Current Short Circuit Duration (remove short for recovery) Short circuit protection method Hiccup autorestart duty cycle Regulation ➄ Line Regulation Load Regulation Ripple and Noise Temperature Coefficient Maximum Capacitive Loading (10% ceramic, 90% Oscon) Conditions ➀ See Derating No trim At 50% load User-adjustable Via magnetic feedback Minimum 0.0 11.88 -1 -10 14 0.0 Typical/Nominal 25.2 12.00 Maximum 25.45 12.12 +1 +10 22 2.1 130 0.1 Units W Vdc % of Vset. % of Vnom. Vdc A % of IoutMax A 19 2.1 No minimum load 97% of Vnom., after warmup Hiccup technique, autorecovery within ±1.25% of Vout Output shorted to ground, no damage Current limiting Output shorted to ground Vin=min. to max., Vout=nom., 50% load Iout=min. to max., Vin=48V 5 Hz- 20 MHz BW At all outputs Cap. ESR=