ULS 30-Watt Series www.murata-ps.com Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters FEATURES n Small footprint DC/DC converter, ideal for embedded applications n 1.30 x 0.90 x 0.36 open frame package Typical units n Industry standard DOSAbric format and pinout with surface mount option n 2:1 Input Voltage Range (36V-75V, D48) PRODUCT OVERVIEW n 2250 Volt Basic input/output isolation The world of brick DC/DC converters has seen using CPUs, ASICs, programmable logic and (48V models) a steady size reduction. The ULS series makes an- FPGAs. No minimum load is required. For systems n Up to 30 Watts total output power with other dramatic size shrink down to a sixteenth- requiring controlled startup/shutdown, an external overtemperature shutdown brick width (0.91 inches) while still retaining up remote On/Off control may use a switch, transistor to 30Watt output and full 2250 Volt DC isolation. or digital logic. n High efficiency synchronous rectifier forward The PC-board mount converter family accepts Many self-protection features on the ULS series topology 36to 75 Volts DC inputs and delivers fixed outputs avoid both converter and external circuit hazards. n Stable no-load operation with no required regulated to within 0.125%. The ULS converters These include input undervoltage lockout and external components are ideal for datacom and telecom applications, overtemperature shutdown. The outputs current cell phone towers, data centers, server farms and limit using the hiccup autorestart technique and n Operating temperature range -40 to +85C network repeaters. the outputs may be short-circuited indefinitely. with derating ULS outputs may be trimmed within -20% to Additional features include output overvoltage and n Certified to UL/EN/IEC 60950-1, CAN/CSA +10% of nominal output while delivering fast set- reverse conduction elimination. C22.2 No. 60950-1, EN60950-1 safety tling to current step loads and no adverse effects The synchronous rectifier forward topology approvals, 2nd Edition from higher capacitive loads. Excellent ripple and yields high efficiency for minimal heat buildup and n Extensive self-protection shut down features noise specifications assure compatibility to circuits no fan operation. F1 +Vin (1) Isolation +Vout (8) Barrier Switching +Sense (7)* External Filters On/Off DC Control Controller Power Current Sense (2) and Power Source Transfer -Sense (5)* Open = On Reference and Closed = Off Error Amplier (Positive Trim (6) logic) -Vin (3) -Vout (4) *Sense is included on the ULS-3.3/8-D48 and ULS-5/6-D48 only. Figure 1. Simplified Block Diagram Typical topology is shown For full details go to REG.-Nr D216. www.murata-ps.com/rohs www.murata-ps.com/support MDC ULS-30W C08 Page 1 of 30ULS 30-Watt Series Sixteenth-brick DOSA-Compatible, Isolated DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Input Efficiency Root Model R/N (mV pk-pk) Regulation (max.) Case (inches) Vout Iout Power Vin Nom. Range Iin , no load Iin , full (V) (A, max.) (W) (V) (V) (mA) load (A) Typ. Max. Line Load Min. Typ. ULS-3.3/8-D48 3.3 8 26.5 90 130 0.1% 0.1% 48 36-75 75 0.58 89% 90% 1.30x0.90x0.36 ULS-5/6-D48 5 6 30 75 100 0.125% 0.1% 48 36-75 20 0.69 89% 91% 1.30x0.90x0.36 ULS-12/2.5-D48 12 2.5 30 130 150 0.125% 0.125% 48 36-75 25 0.71 86% 87.7% 1.30x0.90x0.36 ULS-15/2-D48 15 2 30 115 125 0.125% 0.125% 48 36-75 25 0.70 87.5% 89% 1.30x0.90x0.36 Please refer to the Part Number Structure when ordering. Regulation specifications describe output voltage deviations from a nominal/midpoint value to either All specifications are typical at nominal line voltage and full load, +25 C unless otherwise noted. See extreme (50% load step). detailed specifications. Output capacitors are 1 F ceramic multilayer in parallel with 10 F electrolytic. I/O caps are necessary for our test equipment and may not be needed for your application. PART NUMBER STRUCTURE ULS - 12 / 2.5 - D48 N M Lx - C RoHS Hazardous Substance Compliance (does not claim EU RoHS exemption 7blead in solder) C = RoHS-6 Sixteenth Brick Series Pin Length Option (Thru-hole only) Blank = Standard pin length 0.180 (4.6mm) L1 = 0.110 (2.79mm) L2 = 0.145 (3.68mm) Nominal Output Voltage: SMT Version Blank = Through-hole mount, no SMT Maximum Rated Output Current M = Surface mount (MSL Rating 2) Current in Amps On/Off Control Logic: Input Voltage Range: N = Negative D48 = 36-75 Volts (48V nominal) P = Positive Special quantity order is required samples available with standard pin length only. SMT (M) versions not available in sample quantities. Some model number combinations may not be available. See website or contact your local Murata sales representative. www.murata-ps.com/support MDC ULS-30W C08 Page 2 of 30