MEGAVERTER RO 400 WATT DC-DC CONVERTER MODEL: MV48-5 DATA SHEET Distributed Power in Telecom, Industrial Control, Wireless, & Computer Applications INPUT: 48VDC OUTPUT: 5VDC @ 80A 400 WATTS Size: 2.4 x 4.6 x 0.5 inches FEATURES MODEL SELECTION • High Power Density: • High Efficiency: 83% Model Input Output Output 72 W/cu. in. • Constant Frequency Number Voltage Voltage Current • -40 to +100°C Operation • Low Noise MV48-5 36-75Vdc 5Vdc 80A • Encapsulated • Remote Sense • Trim Range: 4V to 5.5V • Parallelable with Current Sharing for n+m Redundancy • Non-Shutdown Over Voltage Protection • 105°C Over Temperature Application Notes and • Low Profile: 0.41” Height Protection Evaluation Boards are Available with Recessed Mounting • Safety Agency Compliant DESCRIPTION MEGAVERTER DC-DC converters are high density, feature rich modules packaged in the industry standard “full brick” size (2.4x4.6x0.5 inches) for circuit board mounting. They are used where large blocks of DC power are required. The MV48-5 provides up to 400 Watts of low noise, 5Vdc power from a 48Vdc power bus RO Associates, Inc. Sunnyvale, CA 408 744-1450 fax: 408 744-1521 wccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccww.roassoc.c om www.roassoc.com email: [email protected] MEGAVERTER DC-DC Converter MV48-5 ABSOLUTE MAXIMUM RATINGS Exceeding absolute maximum ratings may cause permanent damage and may reduce reliability. PARAMETER Input Voltage (+In to –In) Enable Voltage (Enable to –In) Parallel Pin Voltage (Parallel Pin to –In) Output Voltage (+Out to –Out) Sense Voltage (+Sense to –Sense) Input/Output Isolation Sense/Output Isolation Input/Baseplate Isolation Output/Baseplate Isolation Sense/Baseplate Isolation Storage Temperature Operating Temperature Soldering Temperature (Wave Solder) Soldering Temperature (Hand Solder) MIN -0.3 -0.3 -0.3 -0.5 -0.5 MAX 100 6.0 5.0 8.0 8.0 3000 500 1500 500 500 +125 +100 260 390 -55 -40 UNITS Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc °C °C °C °C CONDITIONS Baseplate < 5 sec. < 7 sec. ELECTRICAL SPECIFICATIONS Electrical specifications apply over the entire range of input voltage, output current, and temperature unless indicated. INPUT PARAMETERS Input Voltage MIN TYP MAX UNITS 36 48 75 Vdc 20 A See Input Characteristic Curve dB @120Hz Maximum Input Current Input Ripple Rejection 60 CONDITIONS OUTPUT PARAMETERS MIN TYP MAX UNITS Voltage Set Point 4.95 5 5.05 Vdc Load Regulation 12.5 10 mV 48Vin, 25°C, Full Load 0A to 80A Line Regulation 12.5 10 mV Over Vin Range 0.02 %/°C -40 to +100°C 150 mV p-p 5Hz to 30MHz 80 A 400 W 92 104 A Vout = 4.75Vdc, See Output Characteristic Curve Short Circuit Current 102 115 A Vout = 250 mV, See Output Characteristic Curve Transient Response Peak Deviation (1.0A/µsec slew rate) 50 mV Transient Response Settling Time (1.0A/µsec slew rate) 100 µsec Vout Within 50mV of Steady State 83 % Vin = 48V, Full Load, 25°C Case, See Efficiency Curves Voltage Drift w/Temperature Ripple 50 Rated Current 0 Output Power Current Limit Inception Efficiency: RO Associates, Inc. 81 82 Sunnyvale, CA 408 744-1450 CONDITIONS See Output characteristic Curve 16A Load to 64A Load fax: 408 744-1521 email: [email protected] MEGAVERTER DC-DC Converter MV48-5 ELECTRICAL SPECIFICATIONS (continued) ISOLATION PARAMETERS MIN TYP Input to Output Capacitance MAX 470 Input to Output Resistance 10 MECHANICAL PARAMETERS Weight TYP Case Floating MAX UNITS CONDITIONS g (oz.) 0.5 x 2.4 x 4.6 Inches See Outline Drawing 3.3 °C/W Case Temperature = 100°C MIN TYP MAX UNITS ±4 Adc 5.5 Vdc 0.5 Vdc 6.5 Vdc +110 °C Case Temperature V Vout = 0 @ Venable = 0V Power Sharing Accuracy Trim Range pF 250 (8.8) Thermal Resistance, Case to Ambient FEATURE PARAMETERS CONDITIONS M ohms MIN Size UNITS 4 Remote Sense Compensation Over Voltage Protection (NonShutdown, Auto. Recovery) 5.7 Over Temperature Shut-down +100 +105 CONDITIONS 8A to 80A Load Current 25°C Case Enable * Logic Off Threshold 0.8 Enable Current (Logic Off) 1.0 mA Logic On Threshold Turn-On Time 2.4 2 V msec F.L., Vout within 1% of Steady State * An open collector connection or equivalent is recommended for on/off control. TRIM CIRCUIT CONFIGURATIONS +Out +Out +Sense +Sense Trim Load TRIM RESISTOR CALCULATIONS R trim−up = Rtrim-up Trim Load Rtrim-down -Sense -Sense -Out -Out Trim Down RO Associates, Inc. 10.76 − 2.862 × ∆Vo kohms R trim−down = ∆Vo ∆Vo = Desired Output Voltage Change (Volts) R trim−down = External Resistor Value to Decrease Vo Trim Up Sunnyvale, CA 3.549 kohms ∆Vo 408 744-1450 R trim−up = External Resistor Value to Increase Vo fax: 408 744-1521 email: [email protected] MEGAVERTER DC-DC Converter MV48-5 Output Characteristic (maximum input current) 18 16 14 12 10 8 6 4 2 0 (room temperature, V in = 48V) 6 5 Vout (Volts) Iin (Amps) Input Characteristic 4 3 2 1 0 0 20 40 60 V in (Volts) 0 80 20 40 60 80 Iout (Amps) 100 120 Efficiency Efficiency (%) 90 Vin = 36V 85 80 V in = 75V V in = 54V 75 70 Vin = 48V 65 60 0 20 40 60 Load Current (Amps) 80 Outline Drawing 4.60 4.20 .20 .20 .143 DIA.THRU 4 PLACES -OUT .30 2.40 -OUT PARALLEL ENABLE -IN -IN +IN +IN .15 .15 .15 .20 .15 .35 +OUT +OUT +S -S TRIM .62 .12 .20 .25 .15 .29 DIA. X .10 DEEP 4 PLACES 4.30 .137 DIA. PIN 4 PLACES .040 DIA. PIN 10 PLACES .41 .50 .29 MIN. .45 RO Associates, Inc. P.O. Box 61419 Sunnyvale, CA 94088 2.00 .30 ALUMINUM HEATSINK SURFACE .48 www.roassoc.com rev 052901 email: [email protected] 800 443-1450 408 744-1450 fax: 408 744-1521