MURATA POWER SOLUTIONS RBE-12/20-D48NB-C

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, fi xed12 VDC @ 20 A series accept a 36 to 75 Volt DC input voltage zero airfl ow higher temperature applications may  94.5% ultra-high efficiency at full load with range (48 VDC nominal) and converts it to a fixed 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 rectifi 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) fi ts tight card cages. pin lengths, and the baseplate. Assembled using  Up to +85° Celsius thermal performance (with The RBE’s regulated synchronous-rectifi er ISO-certifi ed automated surface-mount techniques, derating) topology and fi xed frequency operation means the RBE series is certifi ed to UL and IEC safety  Stable no-load operation excellent effi 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  Certifi 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) *TPMBUJPO F1 +Vin (1) +Vout (8) Barrier t
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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.B06Δ Page 1 of 16 RBE-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.) ➁ Effi ciency Package VOUT IOUT Power VIN Nom. Range load load Root Model ➀ (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. ➁ Line regulation is given as Vin = 40V to 75V, Iout = half load. Load regulation is Vin = 48V, Iout = Imin to Imax. ➂ All specifi cations are at the full input voltage range, maximum load, and full temperature range unless otherwise noted. See detailed specifi cations. Output capacitors are 1 μF in parallel with 10 μF and 470μF capacitor across the input pins. I/O caps are necessary for our test equipment and may not be needed for your application. PART NUMBER STRUCTURE R BE - 12 / 20 - D48 N M B H Lx - C RoHS Hazardous Substance Compliance Output Confi guration: (does not claim EU RoHS exemption 7b–lead 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) ➀ Nominal Output Voltage L2 = Pin length 0.145 inches (3.68mm) ➀ Maximum Rated Output Conformal coating (optional) Blank = no coating, standard Current in Amps H = Coating added, optional ➀ Input Voltage Range Baseplate Blank = No baseplate D48 = 36-75V, B = Baseplate installed ➁ 48V nominal On/Off Control Logic Surface Mount N = Negative logic Blank = Thru-hole pin mount M = Surface mount (MSL rating 1) ➂ P = Positive logic ➀ Special quantity order is required; samples available with standard pin length only. ➁ SMT (M) models are not available with a baseplate. ➂ SMT (M) versions are not available in sample quantities. ➃ Some model number combinations may not be available. See website or contact your local Murata sales representative. www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 2 of 16 RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Conditions ➀ Minimum Typical/Nominal Maximum Units Input Voltage, Continuous Full power operation, full temperature range 0 80 Vdc Operating or non-operating, tested: Input Voltage, Transient 0 100 Vdc 100 mS max. duration Isolation Voltage Input to output 2250 Vdc Input Reverse Polarity None, install external fuse None Vdc On/Off Remote Control Power on or off, referred to -Vin 0 15 Vdc Output Power 0 237.51 W Current-limited, no damage, Output Current 020A short-circuit protected Operating Ambient Temperature Range With derating -40 85 °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 Specifi cations Table is not implied nor recommended. INPUT Conditions ➀ ➂ Operating voltage range 36 48 75 Vdc Voltage Transient (100ms duration) 100 Vdc Recommended External Fuse Fast blow 15 A Start-up threshold Rising input voltage 32 33 34 Vdc Undervoltage lockout Falling input voltage 30 31 32 Vdc Reverse Polarity Protection None, install external fuse None Vdc Internal Filter Type Pi Input current Full Load Conditions 5.16 5.44 A Low Line Vin = minimum 6.99 7.33 A 2 Inrush Transient Vin = 48V 0.05 A -Sec. Short circuit Input current 150 800 mA No Load Input Current Iout = minimum, unit = ON, Vin = 48V 80 150 mA Shut-Down Mode Input Current (Off, UV, OT) 510 mA Refl ected (back) ripple current ➁ Measured at input with specifi ed fi lter 70 200 mA, pk-pk Pre-biased startup External voltage < Vset 0 Monotonic V GENERAL and SAFETY Effi ciency Vin = 48V 91 94.5 % Vin = 75V 90 93 % Isolation Isolation Voltage – no baseplate Input to output, continuous 2250 Vdc Isolation Voltage – with baseplate Input to output, continuous 2250 Vdc Isolation Voltage, Input to baseplate 1500 Vdc Isolation Voltage, Output to baseplate 1500 Vdc Insulation Safety Rating basic Isolation Resistance 10 Mohm Isolation Capacitance 1500 pF Certifi ed to UL-60950-1, CSA-C22.2 No.60950-1, Safety Yes IEC/EN60950-1, 2nd Edition Per Telcordia SR332, issue 2, Method 1, Class 1, 6 Calculated MTBF 2.1 Hours x 10 GF Tambient = +25C DYNAMIC CHARACTERISTICS Fixed Switching Frequency 200 KHz Power ON 10% Vout to 90% Vout Startup Delay 15 mS (50% resistive load) Remote ON to 10% Vout, Vin = 48V Rise time 15 mS (50% resistive load) 50-75-50% load step, Dynamic Load Response settling time to within ±1% of Vout. 2000 μSec (48Vin, 470uF output capacitance, 1A/uS) Dynamic Load Peak Deviation same as above ±600 mV FEATURES and OPTIONS Remote On/Off Control ➅ “N” suffi x: Negative Logic, ON state ON = Ground pin or external voltage -0.1 0.8 V Negative Logic, OFF state OFF = Pin open or external voltage 2.5 15 V Control Current Sinking 1 2 mA “P” suffi x: Positive Logic, ON state ON = Pin open or external voltage 3.5 15 V Positive Logic, OFF state OFF = Ground pin or external voltage 0 1 V Control Current Sinking 1 2 mA Base Plate “B” suffi x www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 3 of 16 RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, CONTINUED OUTPUT Total Output Power See Derating 0.0 234 237.51 W Voltage Nominal Output Voltage Vin = 48V, half load. ±1.5 accuracy 11.525 11.7 11.876 Vdc Over sample load (0-20A) and temperature Total Output Voltage Range 10.5 12 12.5 Vdc (see derating curves) Vout Overshoot 13 13.4 Vdc Overvoltage Protection Output voltage clamped 13.5 Vdc Current Output Current Range 020 20 A Minimum Load No minimum load Current Limit Inception 90% of Vnom., after warmup 24 28 38 A Short Circuit Hiccup technique, autorecovery within ±1.25% Short Circuit Current 410 A of Vout Short Circuit Duration Output shorted to ground, no damage Continuous (remove short for recovery) Short circuit protection method Current limiting Regulation ➄ Line Regulation Vin = 40 to 75V., Vout = nom., 50% load ±2 % Load Regulation Iout = 0 to 100%, Vin = 48V. ±3 % Ripple and Noise 5 Hz- 20 MHz BW 100 150 mV pk-pk Temperature Coeffi cient At all outputs ±0.02 % of Vnom./°C Maximum Capacitive Loading Cap. ESR, Full resistive load 470 4700 μF MECHANICAL (Through Hole Models) Conditions ➀ ➂ Outline Dimensions (no baseplate) 2.3x0.9x0.4 max. Inches 58.42x22.86x10.16 mm LxWxH (Please refer to outline drawing) Outline Dimensions (with baseplate) 2.3x0.9x0.5 Inches 58.42x22.86x12.7 mm Weight (no baseplate) 1.06 Ounces 30 Grams Weight (with baseplate) 1.46 Ounces 41.5 Grams Through Hole Pin Diameter 0.040±0.001 Inches Input pins (see drawings) 1.016±0.025 mm Through Hole Pin Diameter 0.062±0.001 Inches Output pins (see drawings) 1.575±0.025 mm Through Hole Pin Material Copper alloy TH Pin Plating Metal and Thickness Nickel subplate 50 μ-inches Gold overplate 5 μ-inches Baseplate Material Aluminum ENVIRONMENTAL Operating Ambient Temperature Range With derating, no condensation -40 85 °C Operating Case Temperature No derating required -40 120 °C Storage Temperature Vin = Zero (no power) -55 125 °C Thermal Protection/Shutdown 115 125 130 °C Electromagnetic Interference External fi lter required B Class Conducted, EN55022/CISPR22 Radiated, EN55022/CISPR22 External fi lter required B Class RoHS rating ➃ RoHS-6 Notes ➀ Unless otherwise noted, all specifi cations apply over the full input voltage range, full temperature ➂ All models are stable and regulate to specifi cation under no load. range, nominal output voltage and full output load. ➃ Reduction of Hazardous Substances (RoHS) compliance is to RoHS-6 (six substances restricted General conditions are near sea level altitude and natural convection airfl ow unless noted. including lead). All models are tested and specifi ed with external parallel 1 μF and 10 μF output capacitors. A 470 ➄ Regulation specifi cations describe the output voltage changes as the line voltage or load current is μF input capacitor is used across the input pins. varied from its nominal or midpoint value to either extreme. All capacitors are low-ESR types mounted close to the converter. ➅ The Remote On/Off Control is referred to -Vin. These capacitors are necessary for our test equipment and may not be needed in the user’s application. ➆ Please refer to the Part Number Structure for complete ordering model numbers. ➁ Input (back) ripple current is tested and specifi ed over 5 Hz to 20 MHz bandwidth. Input fi ltering is Cbus = 220 μF, Cin = 33 μF and Lbus = 12 μH. www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 4 of 16 RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters TYPICAL PERFORMANCE DATA Maximum Current Temperature Derating at sea level in Transverse Direction Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 36V (air fl ow direction is from Vin- to Vin+), no baseplate Vin= 36V (air fl ow direction is from Vin to Vout), no baseplate 24 24 22 22 20 20 18 18 16 16 2.0 m/s (400LFM) 14 1.5 m/s (300LFM) 14 2.0 m/s (400LFM) 1.0 m/s (200LFM) 12 12 1.5 m/s (300LFM) 0.5 m/s (100LFM) 1.0 m/s (200LFM) 10 10 0.5 m/s (100LFM) 8 8 6 6 4 4 2 2 0 0 30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (ºC) Ambient Temperature (ºC) Maximum Current Temperature Derating at sea level in Transverse Direction Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 48V (air fl ow direction is from Vin- to Vin+), no baseplate Vin= 48V (air fl ow direction is from Vin to Vout), no baseplate 24 24 22 22 20 20 18 18 16 16 2.0 m/s (400LFM) 2.0 m/s (400LFM) 14 14 1.5 m/s (300LFM) 1.5 m/s (300LFM) 12 12 1.0 m/s (200LFM) 1.0 m/s (200LFM) 10 10 0.5 m/s (100LFM) 0.5 m/s (100LFM) 8 8 6 6 4 4 2 2 0 0 30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (ºC) Ambient Temperature (ºC) Maximum Current Temperature Derating at sea level in Transverse Direction Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 75V (air fl ow direction is from Vin- to Vin+), no baseplate Vin= 75V (air fl ow direction is from Vin to Vout), no baseplate 24 24 22 22 20 20 18 18 16 16 2.0 m/s (400LFM) 14 14 1.5 m/s (300LFM) 2.0 m/s (400LFM) 12 12 1.0 m/s (200LFM) 1.5 m/s (300LFM) 10 10 0.5 m/s (100LFM) 1.0 m/s (200LFM) 8 8 0.5 m/s (100LFM) 6 6 4 4 2 2 0 0 30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (ºC) Ambient Temperature (ºC) www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 5 of 16 Output Current (Amps) Output Current (Amps) Output Current (Amps) Output Current (Amps) Output Current (Amps) Output Current (Amps) RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters TYPICAL PERFORMANCE DATA Maximum Current Temperature Derating at sea level in Transverse Direction Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 36V (air fl ow direction is from Vin- to Vin+), with baseplate Vin= 36V (air fl ow direction is from Vin to Vout), with baseplate 24 24 22 22 20 20 18 18 16 16 2.0 m/s (400LFM) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 14 1.5 m/s (300LFM) 14 1.0 m/s (200LFM) 1.0 m/s (200LFM) 12 12 0.5 m/s (100LFM) 0.5 m/s (100LFM) 10 10 8 8 6 6 4 4 2 2 0 0 30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (ºC) Ambient Temperature (ºC) Maximum Current Temperature Derating at sea level in Transverse Direction Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 48V (air fl ow direction is from Vin- to Vin+), with baseplate Vin= 48V (air fl ow direction is from Vin to Vout), with baseplate 24 24 22 22 20 20 18 18 2.0 m/s (400LFM) 2.0 m/s (400LFM) 16 16 1.5 m/s (300LFM) 1.5 m/s (300LFM) 14 14 1.0 m/s (200LFM) 1.0 m/s (200LFM) 12 12 0.5 m/s (100LFM) 0.5 m/s (100LFM) 10 10 8 8 6 6 4 4 2 2 0 0 30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (ºC) Ambient Temperature (ºC) Maximum Current Temperature Derating at sea level in Transverse Direction Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 75V (air fl ow direction is from Vin- to Vin+), with baseplate Vin= 75V (air fl ow direction is from Vin to Vout), with baseplate 24 24 22 22 20 20 18 18 16 16 2.0 m/s (400LFM) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 14 14 1.5 m/s (300LFM) 1.0 m/s (200LFM) 1.0 m/s (200LFM) 12 12 0.5 m/s (100LFM) 0.5 m/s (100LFM) 10 10 8 8 6 6 4 4 2 2 0 0 30 35 40 45 50 55 60 65 70 75 80 85 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (ºC) Ambient Temperature (ºC) www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 6 of 16 Output Current (Amps) Output Current (Amps) Output Current (Amps) Output Current (Amps) Output Current (Amps) Output Current (Amps) RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters TYPICAL PERFORMANCE DATA On/Off Enable start up (Vin=48V, Iout=20A, Cload=470uf, Ta=+25°C) On/Off Enable start up (Vin=48V, Iout=0A, Cload=470uf, Ta=+25°C) Ch2=Vout, Ch4=Enable Ch2=Vout, Ch4=Enable On/Off Enable start up (Vin=48V, Iout=20A, Cload=4700uf, Ta=+25°C) Start up Delay (Vin=48V, Iout=20A, Cload=470uf, Ta=+25°C) Ch1=Vin, Ch2=Vout Ch2=Vout, Ch4=Enable Start up Delay (Vin=48V, Iout=0A, Cload=470uf, Ta=+25°C) Ch1=Vin, Ch2=Vout Start up Delay (Vin=48V, Iout=20A, Cload=4700uf, Ta=+25°C) Ch1=Vin, Ch2=Vout www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 7 of 16 RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters TYPICAL PERFORMANCE DATA Effi ciency vs. Line Voltage and Load Current @ 25°C Thermal image with hot spot at full load current with 30°C ambient; air is fl owing at 100 LFM. Air is fl owing across the converter from -Vin to +Vin at 48V input. 100 Identifi able and recommended maximum value to be verifi ed in application. 95 VIN = 36V 90 VIN = 48V VIN = 75V 85 80 75 70 0 5 10 15 20 25 Load Current (Amps) Typical Output Voltage (Vout) vs. Input Voltage (Vin) at +25°C Typical Output Voltage (Vout) Vs. Output load at +25°C 12.2 12 12 11.8 10A 11.8 20A 11.6 11.6 no load 11.4 11.4 11.2 11.2 36V 11 48V 11 75V 10.8 10.8 10.6 10.6 Input Voltage/Vin 10.4 The RBE-12/20-D48 is not designed to be operated within the shaded area. 1 2 3 4 5 6 7 8 9 1011121314151617181920 The output voltage will be fully regulated within the white area in the graph Load/A above. Operation outside of this area is not recommended for normal use. www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 8 of 16 Efficiency (%) Output Voltage/Vout Output Voltage/Vout RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters TYPICAL PERFORMANCE DATA Typical Startup Waveform with a 4V bias voltage Typical Startup Waveform with a 8V bias voltage Output Ripple and Noise (Vin = 48V, Iout = 20A, Cload = 1uF || 10μF, Ta = +25°C) Output Ripple and Noise (Vin = 48V, Iout = 0A, Cload = 1uF || 10μF, Ta = +25°C) Output Ripple and Noise (Vin = 48V, Iout = 20A, Cload = 4700μF, Ta = +25°C) Stepload Transient Response (Vin = 48V, Cload = 470μF, Iout = 50-75-50% of Imax, 1A/μS, Ta = +25°C) www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 9 of 16 RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters MECHANICAL SPECIFICATIONS (THROUGH-HOLE MOUNT) WITH BASEPLATE OPTION OPEN FRAME SIDE VIEW PINS 1-3,: φ0.040±0.0015(1.016±0.038) 0.005 minimum clearance PINS 1-3,: PINS 4,5: between standoffs and φ0.040±0.0015(1.016±0.038) 0.005 minimum clearance φ0.062±0.0015(1.575±0.038) highest component PINS 4,5: between standoffs and SEE NOTE 6 φ0.062±0.0015(1.575±0.038) highest component 50.80 SEE NOTE 6 50.80 2.000 2.000 3 4 3 4 2 2 1 8 1 8 58.4 58.4 2.30 2.30 BOTTOM PIN SIDE VIEW BOTTOM PIN SIDE VIEW RECOMMENDED FOOTPRINT (VIEW THROUGH CONVERTER) M3-6H TYP 2PL FINISHED HOLE SIZES 2.32 PINS 1-3 (PER IPC-D-275, LEVEL C) 0.048-0.062 TOP VIEW C L (PRI) (SEC) 1 8 0.46 TOP VIEW 2 0.92 C C L L 3 4 NOTES: UNLESS OTHERWISE SPECIFIED; 1:M3 SCREW USED TO BOLT UNIT’S BASEPLATE TO OTHER SURFACES(SUCH AS 1.00 0.100 MIN HEATSINK) FINISHED HOLE SIZES @ 1-3 @ PINS 4 & 8 MUST NOT EXCEED 0.120’’(3.0mm) DEPTH BELOW THE SURFACE OF BASEPLATE FOR PIN 2.000 (PER IPC-D-275, LEVEL C) 2:APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb(0.6Nm); SHOULDERS 0.070-0.084 3:ALL DIMENSION ARE IN INCHES[MILIMETER]; IT IS RECOMMENDED THAT NO PARTS 4:ALL TOLERANCES: ×.××in ,±0.02in(×.×mm,±0.5mm) BE PLACED BENEATH CONVERTER ×.×××in ,±0.01in(×.××mm,±0.25mm) 5:COMPONENT WILL VARY BETWEEN MODELS 6:STANDARD PIN LENGTH: 0.180 Inch 7: FINISH: (ALL PINS) GOLD (5u”MIN) OVER NICKEL (50u” MIN) Dimensions are in inches (mm shown for ref. only). FOR L2 PIN LENGTH OPTION IN MODEL NAME., USE STANDARD L2 PIN WITH PIN LENGTH TO 0.145 Inch Third Angle Projection Tolerances (unless otherwise specified): INPUT/OUTPUT CONNECTIONS .XX ± 0.02 (0.5) Pin Pin .XXX ± 0.010 (0.25) 1 +Vin 4 -Vout Angles ± 2˚ 2 Remote On/Off 8 +Vout Components are shown for reference only 3 -Vin and may vary between units. www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 10 of 16 15.24 0.600 15.24 12.7 L 0.600 0.50 22.86 0.900 15.24 0.600 15.24 10.16 L 0.600 0.40 22.86 0.900 FEED UN IND) ( W DIRECTION ----- RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters MECHANICAL SPECIFICATIONS (SURFACE MOUNT, MSL RATING 1) NOTES: UNLESS OTHERWISE SPECIFIED; 1:ALL DIMENSION ARE IN INCHES[MILIMETER]; 2:ALL TOLERANCES: ×.××in ,±0.02in(×.×mm,±0.5mm) ×.×××in ,±0.01in(×.××mm,±0.25mm) 3:COMPONENT WILL VARY BETWEEN MODELS 0.06 Dimensions are in inches (mm shown for ref. only). [50.80] [1.524] 2.000 Third Angle Projection Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) 3 4 Angles ± 2˚ Components are shown for reference only and may vary between units. 2 8 1 INPUT/OUTPUT CONNECTIONS Pin Pin [58.4] 1 +Vin 4 -Vout 2.30 2 Remote On/Off 8 +Vout PIN SIDE VIEW 3 -Vin 3 PIN #1 INDICATOR AT EACH POCKET ON POCKET TAPE PIN #1 OF 'ROUND' FEED (UNWIND) DC-DC SPROCKET DIRECTION ------- CONVERTER HOLES 5 2.300 5 2.83 58.42 72.00 1.319 33.50 'OBLONG' SPROCKET HOLES .450 ĭ7.0(0.28")MIN AREA 11.43 PICK & PLACE LOCATION 1 4 .900 22.86 13.0" x 72mm WIDE 1.260 REEL (REF) 32.00 NOTES: (UNLESS OTHERWISE SPECIFIED) 1. REFER TO SPECIFIC BOM FOR LIST OF PARTS 2. NOTE ORIENTATION OF PARTS IN POCKETS 3. APPLY MARKING LABEL (ITEM 4) AS SH0WN 4. LEAVE THE FIRST SEVEN (7) POCKETS EMPTY, FILL THE NEXT 100 POCKETS WITH PRODUCT, AND LEAVE EIGHT (8) POCKETS MINIMUM EMPTY ON THE END OF THE REEL. 5. PEEL FORCE OF THE COVER TAPE: THE ANGLE BETWEEN THE COVER TAPE DURING PEEL-OFF AND THE UNREELING DIRECTION SHALL BE 180 FOR A PEEL SPEED OF 39IN/MIN, THE PEEL FORCE SHALL BE 30-60 GRAMS, SEE MURATA-PS PROCEDURE A-46002. THE COVER TAPE SHALL ADHERE UNIFORMLY TO THE CARRIER (POCKET) TAPE. www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 11 of 16 0.015 Min [0.381] [10.16] [22.86] 0.40 0.900 RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters TECHNICAL NOTES Thermal Shutdown band. The specifi cation assumes that the output is fully loaded at maximum rated current. Similar conditions apply to the On to Vout regulated specifi cation Extended operation at excessive temperature will initiate overtemperature such as external load capacitance and soft start circuitry. shutdown triggered by a temperature sensor inside the PWM controller. This operates similarly to overcurrent and short circuit mode. The inception point Recommended Input Filtering of the overtemperature condition depends on the average power delivered, The user must assure that the input source has low AC impedance to provide the ambient temperature and the extent of forced cooling airfl ow. Thermal dynamic stability and that the input supply has little or no inductive content, shutdown uses only the hiccup mode (autorestart). including long distributed wiring to a remote power supply. The converter will Start Up Considerations operate with no additional external capacitance if these conditions are met. When power is fi rst applied to the DC/DC converter, there is some risk of start up For best performance, we recommend installing a low-ESR capacitor imme- diffi culties if you do not have both low AC and DC impedance and adequate regula- diately adjacent to the converter’s input terminals. The capacitor should be a tion of the input source. Make sure that your source supply does not allow the ceramic type such as the Murata GRM32 series or a polymer type. Make sure instantaneous input voltage to go below the minimum voltage at all times. that the input terminals do not go below the undervoltage shutdown voltage at all times. More input bulk capacitance may be added in parallel if needed. Use a moderate size capacitor very close to the input terminals. You may need two or more parallel capacitors. A larger electrolytic or ceramic cap sup- Recommended Output Filtering plies the surge current and a smaller parallel low-ESR ceramic cap gives low The converter will achieve its rated output ripple and noise with no additional AC impedance. external capacitor. However, the user may install more external output capacitance Remember that the input current is carried both by the wiring and the to reduce the ripple even further or for improved dynamic response. Again, use ground plane return. Make sure the ground plane uses adequate thickness low-ESR ceramic (Murata GRM32 series) or polymer capacitors. Mount these copper. Run additional bus wire if necessary. close to the converter. Measure the output ripple under your load conditions. Input Fusing Use only as much capacitance as required to achieve your ripple and noise objectives. Excessive capacitance can make step load recovery sluggish or Certain applications and/or safety agencies may require fuses at the inputs of possibly introduce instability. Do not exceed the maximum rated output capaci- power conversion components. Fuses should also be used when there is the tance listed in the specifi cations. possibility of sustained input voltage reversal which is not current-limited. For greatest safety, we recommend a fast blow fuse installed in the ungrounded Input Ripple Current and Output Noise input supply line. All models in this converter series are tested and specifi ed for input refl ected Input Under-Voltage Shutdown and Start-Up Threshold ripple current and output noise using designated external input/output com- ponents, circuits and layout as shown in the fi gures below. The Cbus and Lbus Under normal start-up conditions, converters will not begin to regulate properly components simulate a typical DC voltage bus. until the rising input voltage exceeds and remains at the Start-Up Threshold Voltage (see Specifi cations). Once operating, converters will not turn off until the input voltage drops below the Under-Voltage Shutdown Limit. Subsequent TO CURRENT OSCILLOSCOPE restart will not occur until the input voltage rises again above the Start-Up PROBE Threshold. This built-in hysteresis prevents any unstable on/off operation at a +VIN single input voltage. LBUS + Start-Up Time – VIN CBUS CIN + Assuming that the output current is set at the rated maximum, the Vin to Vout – Start-Up Time (see Specifi cations) is the time interval between the point when the rising input voltage crosses the Start-Up Threshold and the fully loaded -VIN output voltage enters and remains within its specifi ed accuracy band. Actual CIN = 300μF, ESR < 700mΩ @ 100kHz measured times will vary with input source impedance, external input capaci- CBUS = TBDμF, ESR < 100mΩ @ 100kHz tance, input voltage slew rate and fi nal value of the input voltage as it appears LBUS = <500μH at the converter. Figure 2. Measuring Input Ripple Current These converters include a soft start circuit to moderate the duty cycle of its PWM controller at power up, thereby limiting the input inrush current. Minimum Output Loading Requirements All models regulate within specifi cation and are stable under no load to full The On/Off Remote Control interval from On command to Vout (fi nal ±5%) load conditions. Operation under no load might however slightly increase assumes that the converter already has its input voltage stabilized above the output ripple and noise. Start-Up Threshold before the On command. The interval is measured from the On command until the output enters and remains within its specifi ed accuracy www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 12 of 16 RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters Output Fusing The converter is extensively protected against current, voltage and temperature extremes. However your output application circuit may need additional protec- +VOUT tion. In the extremely unlikely event of output circuit failure, excessive voltage could be applied to your circuit. Consider using an appropriate fuse in series with the output. RLOAD C1 SCOPE C2 Output Current Limiting -VOUT Current limiting inception is defi ned as the point at which full power falls below the rated tolerance. See the Performance/Functional Specifi cations. Note par- ticularly that the output current may briefl y rise above its rated value in normal operation as long as the average output power is not exceeded. This enhances C1 = 1μF reliability and continued operation of your application. If the output current is C2 = 10μF too high, the converter will enter the short circuit condition. LOAD 2-3 INCHES (51-76mm) FROM MODULE Output Short Circuit Condition Figure 3. Measuring Output Ripple and Noise (PARD) When a converter is in current-limit mode, the output voltage will drop as the Thermal Shutdown output current demand increases. If the output voltage drops too low (approxi- To prevent many over temperature problems and damage, these converters mately 97% of nominal output voltage for most models), the PWM controller include thermal shutdown circuitry. If environmental conditions cause the will shut down. Following a time-out period, the PWM will restart, causing temperature of the DC/DC’s to rise above the Operating Temperature Range the output voltage to begin rising to its appropriate value. If the short-circuit up to the shutdown temperature, an on-board electronic temperature sensor condition persists, another shutdown cycle will initiate. This rapid on/off cycling will power down the unit. When the temperature decreases below the turn-on is called “hiccup mode.” The hiccup cycling reduces the average output cur- threshold, the converter will automatically restart. There is a small amount of rent, thereby preventing excessive internal temperatures and/or component hysteresis to prevent rapid on/off cycling. damage. A short circuit can be tolerated indefi nitely. CAUTION: If you operate too close to the thermal limits, the converter may The “hiccup” system differs from older latching short circuit systems shut down suddenly without warning. Be sure to thoroughly test your applica- because you do not have to power down the converter to make it restart. The tion to avoid unplanned thermal shutdown. system will automatically restore operation as soon as the short circuit condi- tion is removed. Temperature Derating Curves The graphs in this data sheet illustrate typical operation under a variety of Remote On/Off Control conditions. The Derating curves show the maximum continuous ambient air On the input side, a remote On/Off Control can be specifi ed with either logic temperature and decreasing maximum output current which is acceptable type. Please refer to the Connection Diagram on page 1 for On/Off connections. under increasing forced airfl ow measured in Linear Feet per Minute (“LFM”). Positive-logic models are enabled when the On/Off pin is left open or is Note that these are AVERAGE measurements. The converter will accept brief pulled high to +15V with respect to –VIN. Positive-logic devices are disabled increases in current or reduced airfl ow as long as the average is not exceeded. when the On/Off is grounded or brought to within a low voltage (see Specifi ca- Note that the temperatures are of the ambient airfl ow, not the converter tions) with respect to –VIN. itself which is obviously running at higher temperature than the outside air. Negative-Models with negative logic are on (enabled) when the On/Off is Also note that “natural convection” is defi ned as very fl ow rates which are not grounded or brought to within a low voltage (see Specifi cations) with respect to using fan-forced airfl ow. Depending on the application, “natural convection” is –VIN. The device is off (disabled) when the On/Off is left open or is pulled high usually about 30-65 LFM but is not equal to still air (0 LFM). to +15VDC Max. with respect to –VIN. Murata Power Solutions makes Characterization measurements in a closed Dynamic control of the On/Off function should be able to sink the specifi ed cycle wind tunnel with calibrated airfl ow. We use both thermocouples and an signal current when brought low and withstand the specifi ed voltage when infrared camera system to observe thermal performance. As a practical matter, brought high. Be aware too that there is a fi nite time in milliseconds (see Spec- it is quite diffi cult to insert an anemometer to precisely measure airfl ow in ifi cations) between the time of On/Off Control activation and stable, output. This most applications. Sometimes it is possible to estimate the effective airfl ow if time will vary slightly with output load type and current and input conditions. you thoroughly understand the enclosure geometry, entry/exit orifi ce areas and the fan fl owrate specifi cations. Output Capacitive Load These converters do not require external capacitance added to achieve rated CAUTION: If you exceed these Derating guidelines, the converter may have specifi cations. Users should only consider adding capacitance to reduce an unplanned Over Temperature shut down. Also, these graphs are all collected switching noise and/or to handle spike current load steps. Install only enough near Sea Level altitude. Be sure to reduce the derating for higher altitude. capacitance to achieve noise objectives. Excess external capacitance may cause degraded transient response and possible oscillation or instability. www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 13 of 16 RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters Output OVP (Output Clamped) The RBE-12/20-D48 module incorporates circuitry to protect the output/load (Output OVP, Over Voltage Protection) by effectively clamping the output volt- age to a maximum of 13.5V under certain fault conditions. The initial output voltage is set at the factory for an accuracy of ±1.5%, and is regulated over line load and temperature using a closed loop feedback system. In the event of a failure that causes the module to operate open loop (failure in the control loop), the output voltage will be determined by the input voltage/duty cycle of the voltage conversion (Pulse Width Modulation) circuit. For example, when the input voltage is at 36V, the duty cycle is D1; when the input voltage is at 75V, the maximum duty cycle is D1/2; this change in duty cycle compensates Vout for Vin changes. As Vin continues to increase above 75V the voltage at Vout is clamped because maximum duty cycle has been reached. The output voltage is always proportional to Vin*Duty in a buck derived topology. Figure 4 is the test waveform for the RBE-12/20-D48 module when its feedback loop is open, simulating a loop failure. Channel 1 is the input voltage and Channel 2 it the output voltage. When the input voltage climbs from 48Vdc to 100Vdc, the output voltage remains stable. Figure 4. Test Waveform with Feedback Loop Open Through-Hole Soldering Guidelines SMT Refl ow Soldering Guidelines Murata Power Solutions recommends the specifi cations below when install- The surface-mount refl ow solder profi le shown below is suitable for SAC305 ing these converters. These specifi cations vary depending on the solder type lead-free solders. This graph should be used only as a guideline. Many type. Exceeding these specifi cations may cause damage to the product. Your other factors infl uence the success of SMT refl ow soldering. Since your pro- production environment may differ; therefore please thoroughly review these duction environment may differ, please thoroughly review these guidelines with guidelines with your process engineers. your process engineers. Wave Solder Operations for through-hole mounted products (THMT) For Sn/Ag/Cu based solders: Maximum Preheat Temperature 115ºC. Maximum Pot Temperature 270ºC. Maximum Solder Dwell Time 7 seconds For Sn/Pb based solders: Maximum Preheat Temperature 105ºC. Maximum Pot Temperature 250ºC. Maximum Solder Dwell Time 6 seconds www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 14 of 16 RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters Emissions Performance [3] Conducted Emissions Test Results Murata Power Solutions measures its products for radio frequency emissions against the EN 55022 and CISPR 22 standards. Passive resistance loads are employed and the output is set to the maximum voltage. If you set up your own emissions testing, make sure the output load is rated at continuous power while doing the tests. The recommended external input and output capacitors (if required) are included. Please refer to the fundamental switching frequency. All of this information is listed in the Product Specifi cations. An external discrete fi lter is installed and the circuit diagram is shown below. VCC RTN L1 C1 C7 + + C2 C3 C6 DC/DC -48V GND C4 C5 GND Figure 5. Conducted Emissions Test Circuit Graph 1. Conducted emissions performance, Positive Line, CISPR 22, Class A, full load [1] Conducted Emissions Parts List Item Reference Description SMD -100V-1000nF- 1 C1, C7 X7R-1210 SMD -100V-100nF-±10%- 2C2 X7R-1206 -809uH-±25%-9.7A-R5K- 3L1 28*26*12.7mm 0.1U/250V, 4 C4, C5 13*12*6-0.6-10mm 5C6 4700 μF 6C3 220 μF [2] Conducted Emissions Test Equipment Used Hewlett Packard HP8594L Spectrum Analyzer – S/N 3827A00153 2Line V-networks LS1-15V 50Ω /50Uh Line Impedance Stabilization Network Graph 2. Conducted emissions performance, Negative Line, CISPR 22, Class A, full load [4] Layout Recommendations Most applications can use the fi ltering which is already installed inside the converter or with the addition of the recommended external capacitors. For greater emissions suppression, consider additional fi lter components and/or shielding. Emissions performance will depend on the user’s PC board layout, the chassis shielding environment and choice of external components. Please refer to Application Note GEAN02 for further discussion. Since many factors affect both the amplitude and spectra of emissions, we recommend using an engineer who is experienced at emissions suppression. www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 15 of 16 RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters Vertical Wind Tunnel Murata Power Solutions employs a computer controlled custom-designed closed loop vertical wind tunnel, infrared video camera system, and test instrumentation for accurate airfl ow and heat dissipation analysis of power products. The system includes a precision low fl ow-rate anemometer, IR Transparent optical window variable speed fan, power supply input and load controls, Variable temperature gauges, and adjustable heating element. Unit under speed fan test (UUT) The IR camera monitors the thermal performance of the IR Video Unit Under Test (UUT) under static steady-state conditions. A Camera special optical port is used which is transparent to infrared wavelengths. Both through-hole and surface mount converters are soldered down to a 10”x 10” host carrier board for realistic heat absorption and spreading. Both longitudinal and trans- Heating verse airfl ow studies are possible by rotation of this carrier element board since there are often signifi cant differences in the heat Precision dissipation in the two airfl ow directions. The combination of low-rate adjustable airfl ow, adjustable ambient heat, and adjustable anemometer Input/Output currents and voltages mean that a very wide 3” below UUT range of measurement conditions can be studied. The collimator reduces the amount of turbulence adjacent to the UUT by minimizing airfl ow turbulence. Such turbu- Ambient lence infl uences the effective heat transfer characteristics temperature sensor and gives false readings. Excess turbulence removes more heat from some surfaces and less heat from others, possibly causing uneven overheating. Airflow collimator Both sides of the UUT are studied since there are different thermal gradients on each side. The adjustable heating element and fan, built-in temperature gauges, and no-contact IR camera mean that power supplies are tested in real-world conditions. Figure 6. Vertical Wind Tunnel This product is subject to the following operating requirements Murata Power Solutions, Inc. and the Life and Safety Critical Application Sales Policy: 129 Flanders Road, Westborough, MA 01581 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. © 2018 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_RBE-12-20-D48.B06Δ Page 16 of 16