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 or recommended.
INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold: (measured @ no load)
Undervoltage shutdown: (measured @ no load)
Internal Filter Type
Input current
Full Load Conditions
Low Line
Inrush Transient
Short Circuit Input Current
No Load Input Current
Shut-Down Input Current (Off, UV, OT)
Reflected (back) ripple current
➁
Pre-biased startup
Conditions
➀ ➂
38
Fast blow
Rising input voltage
Falling input voltage
37
35
48
25
37.5
35.5
Pi
11.39
14.55
0.15
0.05
130
10
40
Monotonic
95.5
95.5
2250
1500
1500
Functional
10
1500
Certified to UL-60950-1, CSA-C22.2 No. 60950-
1, IEC/60950-1, 2nd edition
Per Telcordia SR332, issue 1, class 3, ground
fixed, Tambient = +25°C
Variable frequency control (default)
Yes
1.3
175-250
25
3
15
18
50-75-50% load step, settling time to within 1%
of Vout (Cout=1000μF)
same as above
20
200
±400
Hours x 10
6
KHz
mS
mS
mS
mS
μSec
mV
75
38
36
Vdc
A
Vdc
Vdc
Vin = nominal
Vin = minimum
Iout = minimum, unit = ON
Measured at input with specified filter
External output voltage < Vset
Vin = 48V, full load
Vin = min., full load
Input to output
Input to baseplate
Output to baseplate
11.68
14.63
0.30
0.1
200
20
70
A
A
A
2
-Sec.
A
mA
mA
mA, p-p
GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage
Isolation Voltage
Isolation Voltage
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety
Calculated MTBF
%
%
Vdc
Vdc
Vdc
MΩ
pF
DYNAMIC CHARACTERISTICS
Switching Frequency
Vin Start up delay time
Enable Start up delay time
Rise time
Vout Fall Time of Regulated Off: (from 100%
to 0%)
Dynamic Load Response
Dynamic Load Peak Deviation
30
5
20
22
300
±600
FEATURES and OPTIONS
Remote On/Off Control
➃
“N” suffix:
Negative Logic, ON state
Negative Logic, OFF state
Control Current
“P” suffix:
Positive Logic, ON state
Positive Logic, OFF state
Control Current
ON = Ground pin or external voltage
OFF = Pin open or external voltage
Open collector/drain
ON = Pin open or external voltage
OFF = Ground pin or external voltage
Open collector/drain
-0.1
3.5
0.8
13.5
5
13.5
0.8
1
V
V
mA
V
V
mA
3.5
0
www.murata-ps.com/support
MDC_DRQ-12/42-D48.A04
Page 3 of 24
DRQ-12/42-D48 Series
500W Digital Fully Regulated
Intermediate DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, (CONT.)
OUTPUT
Total Output Power
Voltage
Nominal Output Voltage
Output Voltage
Setting Accuracy
Overvoltage Protection
Current
Output Current Range
Cold condition
After warm up
Short Circuit
Short Circuit Current
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
Regulation
➄
Line Regulation
Load Regulation
Ripple and Noise
➅
Temperature Coefficient
Maximum Capacitive Loading
Conditions
➀
Minimum
0
Typical/Nominal
500.25
11.5
Maximum
515.5
11.85
11.55
2
15.6
43.5
56
55
1
Units
W
Vdc
Vdc
% of Vnom
Vdc
A
A
A
No trim (@ all conditions)
@ Vin=48V, Iout=0, temp=+25°C
At 50% load, no trim
Via magnetic feedback
11.16
11.45
-2
13.8
0
52
51
14.4
Default, Configurable via PMBUS
Default, Configurable via PMBUS
Hiccup technique, autorecovery within ±1.25%
of Vout
Output shorted to ground, no damage
Current limiting
Vin = 38 to 75V, Vout = nom., Iout = nom.
Iout = min. to max., Vin = 48V
5 Hz- 20 MHz BW
At all outputs
Low ESR
54
53
0.4
Continuous
30
50
80
0.01
100
100
120
0.02
10000
mV
mV
mV pk-pk
% of Vout./°C
μF
Inches
mm
MECHANICAL (Through Hole Models)
Outline Dimensions (with heat sink)
(Please refer to outline drawing)
Outline Dimensions (with baseplate)
Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness
LxWxH
2.3 x 1.45 x 1.1
58.4 x 36.83 x 27.94
2.3 x 1.45 x 0.52
58.4 x 36.8 x 13.21
0.04 & 0.062
1.016 & 1.575
Copper alloy
98.4-299
4.7-19.6
-40
-40
-55
132
B
RoHS-6
85
110
125
Inches
mm
μ-inches
μ-inches
°C
°C
°C
°C
Class
Nickel subplate
Gold overplate
See Derating
No derating
Vin = Zero (no power)
Measured in center
External filter is required
ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating
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
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