Datasheet
DRQ-12/42-D48 Series
500W Digital Fully Regulated
Intermediate DC-DC Bus Converter
MDC_DRQ-12/42-D48.A03 Page 4 of 24
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OUTPUT
Conditions
➀
Minimum Typical/Nominal Maximum Units
Total Output Power 0 500.25 515.5 W
Voltage
Nominal Output Voltage No trim (@ all conditions) 11.16 11.5 11.85 Vdc
Output Voltage @ Vin=48V, Iout=0, temp=+25°C 11.45 11.55 Vdc
Setting Accuracy At 50% load, no trim -2 2 % of Vnom
Overvoltage Protection Via magnetic feedback 13.8 14.4 15.6 Vdc
Current
Output Current Range 0 43.5 A
Cold condition Default, Confi gurable via PMBUS 52 54 56
After warm up Default, Confi gurable via PMBUS 51 53 55 A
Short Circuit
Short Circuit Current
Hiccup technique, autorecovery within ±1.25%
of Vout
0.4 1 A
Short Circuit Duration
(remove short for recovery)
Output shorted to ground, no damage Continuous
Short circuit protection method Current limiting
Regulation ➄
Line Regulation Vin = 38 to 75V, Vout = nom., Iout = nom. 30 100 mV
Load Regulation Iout = min. to max., Vin = 48V 50 100 mV
Ripple and Noise ➅
5 Hz- 20 MHz BW 80 120 mV pk-pk
Temperature Coeffi cient At all outputs 0.01 0.02 % of Vout./°C
Maximum Capacitive Loading Low ESR 10000 F
MECHANICAL (Through Hole Models)
Outline Dimensions (with heat sink) 2.3 x 1.45 x 1.1 Inches
(Please refer to outline drawing) LxWxH 58.4 x 36.83 x 27.94 mm
Outline Dimensions (with baseplate) 2.3 x 1.45 x 0.52
58.4 x 36.8 x 13.21
Through Hole Pin Diameter 0.04 & 0.062 Inches
1.016 & 1.575 mm
Through Hole Pin Material Copper alloy
TH Pin Plating Metal and Thickness Nickel subplate 98.4-299 µ-inches
Gold overplate 4.7-19.6 µ-inches
ENVIRONMENTAL
Operating Ambient Temperature Range See Derating -40 85 °C
Operating Case Temperature No derating -40 110 °C
Storage Temperature Vin = Zero (no power) -55 125 °C
Thermal Protection/Shutdown Measured in center 132 °C
Electromagnetic Interference External fi lter is required
Conducted, EN55022/CISPR22 B Class
RoHS rating RoHS-6
FUNCTIONAL SPECIFICATIONS, (CONT.)
Notes
➀ Unless otherwise noted, all specifi cations apply at Vin = nominal, nominal output voltage and full
output load. General conditions are near sea level altitude, no base plate installed and natural
convection airfl ow unless otherwise specifi ed. All models are tested and specifi ed with external
parallel 1 F and 10 F output capacitors (see Technical Notes). All capacitors are low-ESR types
wired close to the converter. These capacitors are necessary for our test equipment and may not
be needed in the user’s application.
➁ Input (back) ripple current is tested and specifi ed over 5 Hz to 20 MHz bandwidth. Input fi ltering is
Cin = 33 µF/100V, Cbus = 220µF/100V and Lbus = 12 µH.
➂ All models are stable and regulate to specifi cation under no load.
➃ The Remote On/Off Control is referred to -Vin.
➄ Regulation specifi cations describe the output voltage changes as the line voltage or load current
is varied from its nominal or midpoint value to either extreme. The load step is ±25% of full load
current.
➅ Output Ripple and Noise is measured with Cout = 1 µF || 10 µF, 20 MHz oscilloscope bandwidth
and full resistive load.