www.murata-ps.com RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters Typical unit FEATURES PRODUCT OVERVIEW The fully isolated (2250 Vdc) RBE-12/20-D48 +85 Celsius (see derating curves). No fan or 240 Watts total output power, xed12 VDC 20 A series accept a 36 to 75 Volt DC input voltage zero air ow higher temperature applications may 94.5% ultra-high efficiency at full load with range (48 VDC nominal) and converts it to a xed use the optional base plate for cold plate mounting regulation 12Vdc output. Applications include 48V-powered or natural-convection heatsinks. 36 to 75 Volt DC input range (48 VDC nominal) datacom and telecom installations, base stations, Electronic protection features include input Standard eighth-brick footprint cellular dataphone repeaters, instruments and undervoltage lockout (UVLO) , output current limit, embedded systems. Wideband output ripple and 0.4-inch (10.2 mm) low height (no baseplate) short circuit hiccup, and overtemperature shut- noise is a low 100 mV (typical), peak-to-peak. down. Available options include positive or negative Synchronous recti er topology with 100 mV Reduced open frame overall height of 0.4 (10.2 (typ.) ripple & noise logic On/Off control, conformal coating, various mm) ts tight card cages. pin lengths, and the baseplate. Assembled using Up to +85 Celsius thermal performance (with The RBEs regulated synchronous-recti er ISO-certi ed automated surface-mount techniques, derating) topology and xed frequency operation means the RBE series is certi ed to UL and IEC safety Stable no-load operation excellent ef ciencies up to 94.5%, enabling no standards. Fully isolated to 2250 VDC (BASIC) heatsink operation for most applications up to Remote On/Off enable control Extensive protection features SC, OC, UVLO, OT Certi ed to safety, emissions and environmental standards Meets UL 60950-1, CAN/CSAC22.2 No. 60950-1, IEC60950-1, EN60950-1 safety approvals (2nd Edition) *TPMB UJPO F1 +Vin (1) +Vout (8) Barrier t 4XJUDIJOH External t JMUFST On/Off DC Controller Control Power t VSSFOU 4FOTF (2) and Power Source SBOTGFS5 Open = On Reference and Duty Cycle MPTFE 0GG 3FHVMB UJPO Error Amplier 1 PTJUJWF MPHJD -Vin (3) -Vout (4) Figure 1. Connection Diagram Typical topology is shown. Murata Power Solutions recommends an external fuse at F1. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC RBE-12-20-D48.B08 Page 1 of 16RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Input Ripple & Noise Total IIN, min. IIN, full (mVp-p) Regulation (max.) Ef ciency Package VOUT IOUT Power VIN Nom. Range load load Root Model (V) (A, max) (W) Typ. Line (%) Load (%) (V) (V) (mA) (A) Min. Typ. Case (inches) Case (mm) RBE-12/20-D48 11.7 20 234 100 2 3 48 36-75 80 5.16 91% 94.5% 2.3x0.9x0.4 58.4x22.9x10.16 Please refer to the part number structure for additional options and complete ordering part numbers. Line regulation is given as Vin = 40V to 75V, Iout = half load. Load regulation is Vin = 48V, Iout = Imin to Imax. All speci cations are at the full input voltage range, maximum load, and full temperature range unless otherwise noted. See detailed speci cations. Output capacitors are 1 F in parallel with 10 F and 470F capacitor across the input pins. I/O caps are necessary for our test equipment and may not be needed for your application. NOTE: All of the Positive enable models are To Be Discontinued. RBE-12/20-D48PB-C, RBE-12/20-D48PBH-C, RBE-12/20-D48P-C and RBE-12/20-D48PH-C. PART NUMBER STRUCTURE R BE - 12 / 20 - D48 N M B H Lx - C RoHS Hazardous Substance Compliance Output Con guration: (does not claim EU RoHS exemption 7blead in solder) R = Regulated C = RoHS-6 (Through-hole packages only) Eighth-Brick Package Pin Length Option Isolated converter Blank = Standard pin length 0.180 inches (4.6mm) L1 = Pin length 0.110 inches (2.79mm) Nominal Output Voltage L2 = Pin length 0.145 inches (3.68mm) Maximum Rated Output Conformal coating (optional) Blank = no coating, standard Current in Amps H = Coating added, optional Input Voltage Range Baseplate Blank = No baseplate D48 = 36-75V, B = Baseplate installed 48V nominal On/Off Control Logic Surface Mount N = Negative logic Blank = Thru-hole pin mount M = Surface mount (MSL rating 1) P = Positive logic Special quantity order is required samples available with standard pin length only. SMT (M) models are not available with a baseplate. SMT (M) versions are 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 M DC RBE-12-20-D48.B08 Page 2 of 16