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, Configurable via PMBUS

52

54

56

After warm up

Default, Configurable 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 Coefficient

At all outputs

0.01

0.02

% of Vout./°C

Maximum Capacitive Loading

Low ESR

10000

μF

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 filter is required

Conducted, EN55022/CISPR22

B

Class

RoHS rating

RoHS-6

FUNCTIONAL SPECIFICATIONS, (CONT.)

Notes

➀ Unless otherwise noted, all specifications 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 airflow unless otherwise specified. All models are tested and specified with external

parallel 1 μF and 10 μF 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 specified over 5 Hz to 20 MHz bandwidth. Input filtering is

Cin = 33 μF/100V, Cbus = 220μF/100V and Lbus = 12 μH.

➂ All models are stable and regulate to specification under no load.

➃ The Remote On/Off Control is referred to -Vin.

➄ 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 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.