RBE-12-20-D48 MURATA-PS | Alldatasheet
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MDC_RBE-12-20-D48.B11 Page 1 of 16 www.murata-ps.com RBE-12/20-D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters www.murata-ps.com/support For full details go to www.murata-ps.com/rohs Figure 1. Connection Diagram recommends an external fuse at F1.
FEATURES
240 Watts total output power, fixed12 VDC @ 20 A 94.5% ultra-high efficiency at full load with regulation 36 to 75 Volt DC input range (48 VDC nominal) Standard eighth-brick footprint 0.4-inch (10.2 mm) low height (no baseplate) Synchronous rectifier topology with 100 mV (typ.) ripple & noise Up to +85° Celsius thermal performance (with derating) Stable no-load operation Fully isolated to 2250 VDC (BASIC) Remote On/Off enable control Extensive protection features – SC, OC, UVLO, OT Certified to safety, emissions and environmental standards Meets UL 60950-1, CAN/CSAC22.2 No. 60950-1, IEC60950-1, UL/IEC 62368-1 safety approvals PRODUCT OVERVIEW The fully isolated (2250 Vdc, no baseplate) RBE- 12/20-D48 series accept a 36 to 75 Volt DC input voltage range (48 VDC nominal) and converts it to a fixed 12Vdc output. Applications include 48V-pow- ered datacom and telecom installations, base stations, cellular dataphone repeaters, instruments and embedded systems. Wideband output ripple and noise is a low 100 mV (typical), peak-to-peak. Reduced open frame overall height of 0.4˝ (10.2 mm) fits tight card cages. The RBE’s regulated synchronous-rectifier topology and fixed frequency operation means excellent efficiencies up to 94.5%, enabling “no heatsink” operation for most applications up to +85° Celsius (see derating curves). “No fan” or zero airflow higher temperature applications may use the optional base plate for cold plate mounting or natural-convection heatsinks. Electronic protection features include input undervoltage lockout (UVLO) , output current limit, short circuit hiccup, and overtemperature shut- down. Available options include positive or negative logic On/Off control, conformal coating, various pin lengths, and the baseplate. Assembled using ISO-certified automated surface-mount techniques, the RBE series is certified to UL and IEC safety standards. Typical unit External DC Power Source Reference and Error Amplifier
- Switching
- Filters
- Current Sense -Vout (4) +Vout (8) On/Off Control (2) -Vin (3) Open = On Closed = Off +Vin (1) (Positive logic) Controller and Power Transfer Duty Cycle Regulation Isolation Barrier
www.murata-ps.com/support RBE-12/20- D48 Series Eighth-Brick 240-Watt Isolated DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Root Model Output Input Efficiency Package VOUT (V) IOUT (A, max) Total Power (W) Ripple & Noise (mVp-p) Regulation (max.) VIN Nom. (V) Range (V) IIN, min. load (mA) IIN, full load (A) Typ. Line (%) Load (%) Min. Typ. Case (inches) Case (mm) 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 specifications are at the full input voltage range, maximum load, and full temperature range unless otherwise noted. See detailed specifications. 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* Output Configuration: R = Regulated R BE - 12 / 20 - D48 N M B H Lx - C RoHS Hazardous Substance Compliance (does not claim EU RoHS exemption 7b–lead in solder) C = RoHS Eighth-Brick Package Isolated converter Nominal Output Voltage Maximum Rated Output Current in Amps Input Voltage Range D48 = 36-75V, 48V nominal Pin Length Option (Through-hole packages only) Blank = Standard pin length 0.180 inches (4.6mm) L1 = Pin length 0.110 inches (2.79mm) L2 = Pin length 0.145 inches (3.68mm) Conform al coating (optional) Blank = no coating, standard H = Coating added, optional Baseplate Blank = No baseplate B = Baseplate installed On/Off Control Logic N = Negative logic P = Positive logic Surface Mount Blank = Thru-hole pin mount M = Surface mount (MSL rating 1) 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. MDC_RBE-12-20-D48.B11 Page 2 of 16 Discontinued *See www.murata.com/products/power for model-specific availability.
Eighth-Brick 240-Watt Isolated DC/DC Converters MDC_RBE-12-20-D48.B11 Page 3 of 16 www.murata-ps.com/support FUNCTIONAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS Conditions Minimum Typical/Nominal Maximum Units Input Voltage, Continuous Full power operation, full temperature range 0 80 Vdc Input Voltage, Transient Operating or non-operating, tested: 100 mS max. duration 0 100 Vdc 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 Output Current Current-limited, no damage, short-circuit protected 0 20 A 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 Specifications Table is not implied nor recommended. INPUT Conditions 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 Inrush Transient Vin = 48V 0.05 A2-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) 5 10 mA Reflected (back) ripple current Measured at input with specified filter 70 200 mA, pk-pk Pre-biased startup External voltage < Vset 0 Monotonic V GENERAL and SAFETY Efficiency 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 Safety Certified to UL-60950-1, CSA-C22.2 No.60950-1, IEC60950-1, 2nd Edition, UL 62368-1 Yes Calculated MTBF Per Telcordia SR332, issue 2, Method 1, Class 1, GF Tambient = +25C 2.1 Hours x 106 DYNAMIC CHARACTERISTICS Fixed Switching Frequency 200 KHz Startup Delay Power ON 10% Vout to 90% Vout (50% resistive load) 15 mS Rise time Remote ON to 10% Vout, Vin = 48V (50% resistive load) 15 mS Dynamic Load Response 50-75-50% load step, settling time to within ±1% of Vout. (48Vin, 470uF output capacitance, 1A/uS) 2000 µSec Dynamic Load Peak Deviation same as above ±600 mV FEATURES and OPTIONS Remote On/Off Control “N” suffix: 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” suffix: 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” suffix
Eighth-Brick 240-Watt Isolated DC/DC Converters MDC_RBE-12-20-D48.B11 Page 4 of 16 www.murata-ps.com/support Notes Unless otherwise noted, all specifications apply over the full input voltage range, full tempera ture range, nominal output voltage and full output load. General conditions are near sea level altitude and natural convection airflow unless noted. All models are tested and specified with external parallel 1 µF and 10 µF output capacitors. A 470 µF input capacitor is used across the input pins. All capacitors are low-ESR types mounted close to the converter. These capacitors are necessary for our test equipment and may not be needed in the user’s application. Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is Cbus = 220 µF, Cin = 33 µF and Lbus = 12 µH. All models are stable and regulate to specification under no load. Restriction of Hazardous Substances (RoHS). Regulation specifications describe the output voltage changes as the line voltage or load current is varied from its nominal or midpoint value to either extreme. The Remote On/Off Control is referred to -Vin. Please refer to the Part Number Structure for complete ordering model numbers. OUTPUT Total Output Power See Derating 0.0 234 237.51 W Voltage Total Output Voltage Range Over sample load (0-20A) and temperature (see derating curves) 10.5 12 12.5 Vdc Vout Overshoot 13 13.4 Vdc Overvoltage Protection Output voltage clamped 13.5 Vdc Current Output Current Range 0 20 20 A Minimum Load No minimum load Current Limit Inception 90% of Vnom., after warmup 24 28 38 A Short Circuit Short Circuit Current Hiccup technique, autorecovery within ±1.25% of Vout 4 10 A Short Circuit Duration (remove short for recovery) Output shorted to ground, no damage Continuous Short circuit protection method Current limiting Regulation 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 Coefficient At all outputs ±0.02 % of Vnom./°C Maximum Capacitive Loading Cap. ESR, Full resistive load 470 4700 μF MECHANICAL (Through Hole Models) Conditions Outline Dimensions (no baseplate) LxWxH (Please refer to outline drawing) 2.3x0.9x0.4 max. Inches 58.42x22.86x10.16 mm 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 Input pins (see drawings) 0.040±0.001 Inches 1.016±0.025 mm Through Hole Pin Diameter Output pins (see drawings) 0.062±0.001 Inches 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 Conducted, EN55022/CISPR22 External filter required B Class Radiated, EN55022/CISPR22 External filter required B Class RoHS rating RoHS FUNCTIONAL SPECIFICATIONS, CONTINUED
Eighth-Brick 240-Watt Isolated DC/DC Converters MDC_RBE-12-20-D48.B11 Page 5 of 16 www.murata-ps.com/support TYPICAL PERFORMANCE DATA Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 48V (air flow direction is from Vin to Vout), no baseplate Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 36V (air flow direction is from Vin to Vout), no baseplate Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 75V (air flow direction is from Vin to Vout), no baseplate Maximum Current Temperature Derating at sea level in Transverse Direction Vin= 48V (air flow direction is from Vin- to Vin+), no baseplate Maximum Current Temperature Derating at sea level in Transverse Direction Vin= 36V (air flow direction is from Vin- to Vin+), no baseplate Maximum Current Temperature Derating at sea level in Transverse Direction Vin= 75V (air flow direction is from Vin- to Vin+), no baseplate 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM) 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM) 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM) 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM) 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM) 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM)
Eighth-Brick 240-Watt Isolated DC/DC Converters MDC_RBE-12-20-D48.B11 Page 6 of 16 www.murata-ps.com/support TYPICAL PERFORMANCE DATA Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 48V (air flow direction is from Vin to Vout), with baseplate Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 36V (air flow direction is from Vin to Vout), with baseplate Maximum Current Temperature Derating at sea level in Longitudinal Direction Vin= 75V (air flow direction is from Vin to Vout), with baseplate Maximum Current Temperature Derating at sea level in Transverse Direction Vin= 48V (air flow direction is from Vin- to Vin+), with baseplate Maximum Current Temperature Derating at sea level in Transverse Direction Vin= 36V (air flow direction is from Vin- to Vin+), with baseplate Maximum Current Temperature Derating at sea level in Transverse Direction Vin= 75V (air flow direction is from Vin- to Vin+), with baseplate 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM) 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM) 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM) 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM) 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM) 30 35 40 45 50 55 60 65 70 75 80 85 Output Current (Amps) Ambient Temperature (ºC) 2.0 m/s (400LFM) 1.5 m/s (300LFM) 1.0 m/s (200LFM) 0.5 m/s (100LFM)
Eighth-Brick 240-Watt Isolated DC/DC Converters MDC_RBE-12-20-D48.B11 Page 7 of 16 www.murata-ps.com/support TYPICAL PERFORMANCE DATA 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 On/Off Enable start up (Vin=48V, Iout=20A, Cload=4700uf, Ta=+25°C) Ch2=Vout, Ch4=Enable Start up Delay (Vin=48V, Iout=20A, Cload=470uf, Ta=+25°C) Ch1=Vin, Ch2=Vout On/Off Enable start up (Vin=48V, Iout=20A, Cload=470uf, Ta=+25°C) Ch2=Vout, Ch4=Enable On/Off Enable start up (Vin=48V, Iout=0A, Cload=470uf, Ta=+25°C) Ch2=Vout, Ch4=Enable
Eighth-Brick 240-Watt Isolated DC/DC Converters MDC_RBE-12-20-D48.B11 Page 8 of 16 www.murata-ps.com/support TYPICAL PERFORMANCE DATA Efficiency vs. Line Voltage and Load Current @ 25°C 100 0 5 10 15 20 25 Load Current (Amps) VIN = 36V VIN = 48V VIN = 75V Efficiency (%) Thermal image with hot spot at full load current with 30°C ambient; air is flowing at 100 LFM. Air is flowing across the converter from -Vin to +Vin at 48V input. Identifiable and recommended maximum value to be verified in application. Typical Output Voltage (Vout) vs. Input Voltage (Vin) at +25°C The RBE-12/20-D48 is not designed to be operated within the shaded area. The output voltage will be fully regulated within the white area in the graph above. Operation outside of this area is not recommended for normal use. Typical Output Voltage (Vout) Vs. Output load at +25°C 10.4 10.6 10.8 11.2 11.4 11.6 11.8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Output Voltage/Vout Load/A 36V 48V 75V 10.6 10.8 11.2 11.4 11.6 11.8 12.2 Output Voltage/Vout Input Voltage/Vin 10A 20A no load
Eighth-Brick 240-Watt Isolated DC/DC Converters MDC_RBE-12-20-D48.B11 Page 9 of 16 www.murata-ps.com/support 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 = 4700µF, Ta = +25°C) Stepload Transient Response (Vin = 48V, Cload = 470µF, Iout = 50-75-50% of Imax, 1A/µS, Ta = +25°C) 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)
Eighth-Brick 240-Watt Isolated DC/DC Converters MDC_RBE-12-20-D48.B11 Page 10 of 16 www.murata-ps.com/support MECHANICAL SPECIFICATIONS (THROUGH-HOLE MOUNT) 2.000 50.80 2.000 50.80 OPEN FRAMEWITH BASEPLATE OPTION L L SEE NOTE 6 SEE NOTE 6 BOTTOM PIN SIDE VIEW BOTTOM PIN SIDE VIEW SIDE VIEW 30.600 15.24 0.900 22.86 0.600 15.24 2.30 58.4 2.30 58.4 30.600 15.24 0.900 22.86 0.600 15.24 PINS 1-3,: PINS 4,5: 0.005 minimum clearance between standoffs and highest component PINS 1-3,: PINS 4,5: 0.005 minimum clearance between standoffs and highest component 0.50 12.7 0.40 10.16 TOP VIEW M3-6H TYP 2PL 2.32 0.92 0.46 2.000 1.00 @ 1-3 FOR PIN SHOULDERS
0.100 MIN
IT IS RECOMMENDED THAT NO COMPONENTS OR PCB TRACES BE PLACED BENEATH THE CONVERTER. PLEASE SEE BELOW FOR COMPONENT CLEARANCE UNDER THE MODULE. TOP VIEW CL (VIEW THROUGH CONVERTER) CL RECOMMENDED FOOTPRINT (PRI) (SEC) CL 0.070-0.084 (PER IPC-D-275, LEVEL C) @ PINS 4 & 8 FINISHED HOLE SIZES FINISHED HOLE SIZES PINS 1-3 (PER IPC-D-275, LEVEL C) 0.048-0.062 INPUT/OUTPUT CONNECTIONS Pin Pin 1 +Vin 4 -Vout
2 Remote On/Off 8 +Vout
NOTES: UNLESS OTHERWISE SPECIFIED; 1:M3 SCREW USED TO BOLT UNIT’S BASEPLATE TO OTHER SURFACES(SUCH AS HEATSINK) MUST NOT EXCEED 0.120’’(3.0mm) DEPTH BELOW THE SURFACE OF BASEPLATE 2:APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb(0.6Nm); 3:ALL DIMENSION ARE IN INCHES[MILIMETER]; 4:ALL TOLERANCES: ×.××in ,±0.02in(×.×mm,±0.5mm) 5:COMPONENT WILL VARY BETWEEN MODELS 6:STANDARD PIN LENGTH: 0.180 Inch 7: FINISH: (ALL PINS) GOLD (5u”MIN) OVER NICKEL (50u” MIN) FOR L2 PIN LENGTH OPTION IN MODEL NAME., USE STANDARD L2 PIN WITH PIN LENGTH TO 0.145 Inch
Eighth-Brick 240-Watt Isolated DC/DC Converters MDC_RBE-12-20-D48.B11 Page 11 o f 16 www.murata-ps.com/support MECHANICAL SPECIFICATIONS (SURFACE MOUNT, MSL RATING 1) Third Angle Projection Dimensions are in inches (mm shown for ref. only). Components are shown for reference only and may vary between units. Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) Angles ± 2˚ 2.000 [50.80]
0.015 Min
[0.381] PIN SIDE VIEW 0.06 [1.524] 2.30 [58.4] 0.900 [22.86] 0.40 [10.16] INPUT/OUTPUT CONNECTIONS Pin Pin 1 +Vin 4 -Vout NOTES: UNLESS OTHERWISE SPECIFIED; 1:ALL DIMENSION ARE IN INCHES[MILIMETER]; 2:ALL TOLERANCES: ×.××in ,±0.02in(×.×mm,±0.5mm) 3:COMPONENT WILL VARY BETWEEN MODELS 1.319 33.50 FEED (UNWIND) 'ROUND' HOLES SPROCKET HOLES SPROCKET 'OBLONG' PIN #1 OF DC-DC CONVERTER PIN #1 INDICATOR AT EACH POCKET ON POCKET TAPE Φ7.0(0.28")MIN AREA PICK & PLACE LOCATION 2.83 72.00 58.42 2.300 1.260 32.00 22.86 .900 .450 11.43 PROCEDURE A-46002. THE COVER TAPE SHALL ADHERE UNIFORMLY FOR A PEEL SPEED OF TO THE CARRIER (POCKET) TAPE. 39IN/MIN, THE PEEL FORCE SHALL BE 30-60 GRAMS, SEE MURATA-PS DIRECTION----- FEED (UNWIND) NOTES: (UNLESS OTHERWISE SPECIFIED) REFER TO SPECIFIC BOM FOR LIST OF PARTS1. NOTE ORIENTATION OF PARTS IN POCKETS2. APPLY MARKING LABEL (ITEM 4) AS SH0WN3. LEAVE THE FIRST SEVEN (7) POCKETS EMPTY, FILL THE NEXT 100 4. 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 13.0" x 72mm WIDE REEL (REF)
shutdown uses only the hiccup mode (autorestart). instantaneous input voltage to go below the minimum voltage at all times. copper. Run additional bus wire if necessary. PWM controller at power up, thereby limiting the input inrush current. such as external load capacitance and soft start circuitry. operate with no additional external capacitance if these conditions are met. all times. More input bulk capacitance may be added in parallel if needed. close to the converter. Measure the output ripple under your load conditions. tance listed in the specifications. components simulate a typical DC voltage bus. Figure 2. Measuring Input Ripple Current
hysteresis to prevent rapid on/off cycling. tion to avoid unplanned thermal shutdown. under increasing forced airflow measured in Linear Feet per Minute (“LFM”). increases in current or reduced airflow as long as the average is not exceeded. itself which is obviously running at higher temperature than the outside air. usually about 30-65 LFM but is not equal to still air (0 LFM). the fan flowrate specifications. near Sea Level altitude. Be sure to reduce the derating for higher altitude. too high, the converter will enter the short circuit condition. damage. A short circuit can be tolerated indefinitely. type. Please refer to the Connection Diagram on page 1 for On/Off connections. tions) with respect to –VIN. to +15VDC Max. with respect to –VIN. time will vary slightly with output load type and current and input conditions. cause degraded transient response and possible oscillation or instability. Figure 3. Measuring Output Ripple and Noise (PARD)
output voltage remains stable. Figure 4. Test Waveform with Feedback Loop Open guidelines with your process engineers. Maximum Preheat Temperature 115ºC. Maximum Pot Temperature 270ºC. Maximum Preheat Temperature 105ºC. Maximum Pot Temperature 250ºC.
installed and the circuit diagram is shown below. refer to Application Note GEAN02 for further discussion. recommend using an engineer who is experienced at emissions suppression.
1 C1, C7 SMD -100V-1000nF-
2 C2 SMD -100V-100nF-±10%-
5 C6 4700 µF
6 C3 220 µF
Figure 5. Conducted Emissions Test Circuit Graph 1. Conducted emissions performance, Positive Line,
change without notice. © 2023 Murata Power Solutions, Inc. Murata Power Solutions, Inc. Figure 6. Vertical Wind Tunnel airflow and heat dissipation analysis of power products. temperature gauges, and adjustable heating element. range of measurement conditions can be studied. mean that power supplies are tested in real-world conditions.