DRQ-12/50-L48 Series
www.murata-ps.com
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
PRODUCT OVERVIEW
Typical unit
Typic
FEATURES
Fixed DC outputs, 12V @ 50A
Advanced Bus Converter industry standard
quarter-brick with digital PMBus™ interface
Optional five pin version (DOSA compatible
pinouts)
44-60 VDC input range
The DRQ 600W series provides a fully regulated,
digitally controlled DC output in a ¼-brick format
that will support the evolving Advanced Bus Converter
(ABC) industry standard footprint for isolated
v
bboard mounted power modules. The DRQ series
ssupports advances in power conversion technology
iincluding a digital interface supporting the PMBus
protocol
for communications to power modules.
p
The DRQ series offers high output current (up to
550 Amps) in an industry standard “quarter brick”
ppackage. The DRQ series is an isolated, regulated,
600W-12Vout quarter brick that has an input range
of 44-60Vdc with a typical efficiency of 96%. The
DRQ-12/50-L48 is ideal for intermediate bus applications.
A digitally controlled version is also available
with the Advanced Bus Converter (ABC) pinout.
Advanced automated surface mount assembly
and planar magnetics deliver galvanic isolation
rated at 2250 Vdc for functional insulation. Target
markets include Networking Equipment, Power
over Ethernet applications, Wireless Networking Equipment, Telecommunications Equipment,
Wireless pre-amplifiers, Industrial and test equipment, 12V Fan trays and applications requiring a
regulated 12V output.
A wealth of self-protection features include input
undervoltage lockout and overtemperature shutdown; over current protection using the “hiccup”
autorestart technique, provides indefinite shortcircuit protection, along with output OVP. The DRQ
series is certified to safety standards UL/IEC/CSA
60950-1, 2nd edition. It meets RFI/EMI conducted
emission compliance to EN55022, CISPR22 with an
external filter.
Load sharing option
Baseplate & heatsink options
APPLICATIONS
96% typical efficiency
Embedded systems, datacom and telecom
installations, wireless base stations
Disk farms, data centers and cellular repeater sites
2250 VDC isolation
Certified to UL 60950-1, CSA-C22.2 No. 60950-1,
2nd edition safety approvals
Extensive self-protection, OVP, input undervoltage, current limiting and thermal shutdown
F1
Remote sensor systems, dedicated controllers
Instrumentation systems, R&D platforms, automated test fixtures
Data concentrators, voice forwarding and
speech processing systems
+Vin (1)
+Vout (8)
Barrier
External
DC
Power
Source
On/Off
Control
(2)
Open = On
Controller
and Power
Reference and
Error Amplifier
logic)
-Vin (3)
-Vout (4)
Figure 1. Connection Diagram (without digital interface)
Typical topology is shown. Murata Power Solutions recommends an external fuse.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B03 Page 1 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ➀ ➁
Output
Root Model ➀
DRQ-12/50-L48
Input
R/N (mV
IOUT
pk-pk)
VOUT (Amps, Power
(Volts) max.) (Watts) Typ. Max.
12
50
600
150
200
Regulation
(mV, max.)
Line
Load
100
120
IIN full
VIN Nom. Range
IIN no
load
(Volts) (Volts) load (mA) (Amps)
➀ Please refer to the part number structure for additional ordering information and options.
➁ All specifications are typical at nominal line voltage and full load, +25°C unless otherwise noted. See
48
44-60
150
13.02
Efficiency
Min.
Typ.
95%
96%
Dimensions with heat sink
(inches)
(mm)
2.3 x 1.45 x 1.1 58.4 x 36.8 x 27.94
detailed specifications. Output capacitors are 1 μF || 10 μF. These caps are necessary for our test equipment and may not be needed for your application.
PART NUMBER STRUCTURE
DRQ - 12 / 50 - L48 N B S A Lx - C
RoHS Hazardous Materials compliance
C = RoHS-6 (does not claim EU RoHS exemption 7b–lead in solder), standard
Digital Regulated
Quarter-brick
Pin length option
Blank = Standard pin length 0.180 in. (4.6 mm)
L1 = 0.110 in. (2.79 mm)➀
L2 = 0.145 in. (3.68 mm)➁
Nominal Output Voltage
A = PMBus™ (ABC 16-pin pinout)
Blank = No PMBus™ (DOSA 5-pin pinout)
Maximum Rated Output
Current in Amps
Input Voltage Range:
L48 = 44-60 Volts (48V nominal)
S = Load-Sharing option
Baseplate or Integrated Heat Sink (optional)
B = Baseplate installed
K = Integrated Heat Sink
On/Off Control Logic
N = Negative logic
To Be Discontinued * P = Positive logic
➀ Special quantity order is required; samples available with standard pin length only.
➁ Some model number combinations may not be available. See website or contact your local Murata sales representative.
Complete Model Number Example: DRQ-12/50-L48NKL1-C
Negative On/Off logic, Integrated Heat Sink installed, 0.110˝ pin length, RoHS-6 compliance
To Be Discontinued *
NOTE: The following products are To Be Discontinued.
DRQ-12/50-L48PBA-C
DRQ-12/50-L48PBAL2-C
DRQ-12/50-L48PB-C
DRQ-12/50-L48PBL2-C
DRQ-12/50-L48PBSA-C
DRQ-12/50-L48PBSAL2-C
DRQ-12/50-L48PBS-C
DRQ-12/50-L48PBSL2-C
DRQ-12/50-L48PKA-C
DRQ-12/50-L48PKAL2-C
DRQ-12/50-L48PK-C
DRQ-12/50-L48PKL2-C
DRQ-12/50-L48PKSA-C
DRQ-12/50-L48PKSAL2-C
DRQ-12/50-L48PKS-C
DRQ-12/50-L48PKSL2-C
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MDC_DRQ-12/50-L48NK.B03 Page 2 of 26
* Last Time Buy date is 3/31/2019. Please click here to view the Discontinuance Notification.
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Input Voltage, Continuous
Isolation Voltage
On/Off Remote Control
Output Power
Conditions ➀
Minimum
Typical/Nominal
0
Input to output, continuous
Power on, referred to -Vin
0
0
Maximum
Units
60
2250
13.5
612
Vdc
Vdc
Vdc
W
Current-limited, no damage, short-circuit
0
50
A
protected
Storage Temperature Range
Vin = Zero (no power)
-55
125
°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 or recommended.
Output Current
INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold
Undervoltage shutdown
Overvoltage Shutdown
Overvoltage Recover
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
44
Fast blow
Rising input voltage
Falling input voltage
41
39
64
62
Vin = nominal
Vin = minimum
48
25
42
40
66
64
Pi
13.02
14.2
0.15
0.05
150
10
100
Monotonic
Iout = minimum, unit = ON
Measured at input with specified filter
External output voltage < Vset
60
43
41
68
66
Vdc
A
Vdc
Vdc
Vdc
Vdc
14.02
14.28
0.30
0.1
200
20
180
A
A
A2-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
Vin = 48V, full load
Vin = min., full load
95
95.5
96
96
Input to output, continuous
Input to baseplate, continuous
Output to baseplate, continuous
%
%
2250
1500
1500
functional
10
1500
Certified to UL-60950-1, CSA-C22.2 No. 609501, IEC 60950-1, 2nd edition
Per Telcordia SR332, issue 2, class 3, method 1,
ground fixed, Tambient = +25°C
Vdc
Vdc
Vdc
MΩ
pF
Yes
Hours x 106
3.2
DYNAMIC CHARACTERISTICS
Fix Frequency Control
Vin Startup delay time
Enable startup delay time
Rise Time
Dynamic Load Response
Dynamic Load Peak Deviation
150
25
3
15
Power on to Vout regulated
Remote ON to Vout regulated
50-75-50% load step, settling time to within 1%
of Vout (Cout=3300μF)
same as above
30
5
20
KHz
mS
mS
mS
200
250
μSec
±250
±300
mV
FEATURES and OPTIONS
Remote On/Off Control ➃
“N” suffix:
Negative Logic, ON state
Negative Logic, OFF state
Control Pin Shutdown Current
Control Pin On Current
“P” suffix:
Positive Logic, ON state
Positive Logic, OFF state
Control Pin Shutdown Current
Control Pin On Current
ON = Ground pin or external voltage
OFF = Pin open or external voltage
Open collector/drain
-0.1
3.5
0.8
13.5
5
1
V
V
mA
mA
ON = Pin open or external voltage
OFF = Ground pin or external voltage
Open collector/drain
3.5
0
13.5
0.8
1
5
V
V
mA
mA
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MDC_DRQ-12/50-L48NK.B03 Page 3 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
FUNCTIONAL SPECIFICATIONS, (CONT.)
OUTPUT
Total Output Power
Voltage
Nominal Output Voltage
Setting Accuracy
Output Voltage
Overvoltage Protection
Current
Output Current Range
Minimum Load
Current Limit Inception
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
Typical/Nominal
Maximum
Units
0
600
612
W
11.76
-2
11.95
13.8
12
12.24
2
12.05
15.6
Vdc
% of Vnom
Vdc
Vdc
50
A
58
60
A
Hiccup technique, autorecovery within ±1.25%
of Vout
0.4
1
A
Output shorted to ground, no damage
Continuous
100
120
200
±0.02
10,000
mV
mV
mV pk-pk
% of Vout./°C
μF
No trim, all conditions
At 50% load, no trim
@Vin=48V, Iout=0, Ta=+25°C
Via magnetic feedback
14.4
0
90% of Vout, after warmup
56
Current limiting
40
40
150
Iout = min. to max.
5 Hz- 20 MHz BW
At all outputs
Low ESR
MECHANICAL (Through Hole Models)
Outline Dimensions with heat sink
(Please refer to outline drawing)
Outline Dimensions with baseplate
(Please refer to outline drawing)
Weight with heat sink
2.3 x 1.45 x 1.1
58.4 x 36.83 x 27.94
2.3 x 1.45 x .052
58.4x 36.83x 13.2
3.38
96
2.63
74.5
0.04 & 0.062
1.016 & 1.575
Copper alloy
98.4-299
4.7-19.6
LxWxH
LxWxH
Weight with baseplate
Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness
Nickel subplate
Gold overplate
Inches
mm
Inches
mm
Ounces
Grams
Ounces
Grams
Inches
mm
μ-inches
μ-inches
ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating
See Derating
No derating
Vin = Zero (no power)
Measured in center
External filter is required
-40
-40
-55
85
110
125
135
B
RoHS-6
°C
°C
°C
°C
Class
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.
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MDC_DRQ-12/50-L48NK.B03 Page 4 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
PERFORMANCE DATA
Efficiency vs. Line Voltage and Load Current @ +25°C
98
96
Efficiency (%)
94
VIN = 44V
VIN = 48V
VIN = 60V
92
90
88
86
84
5
10
15
20
25
30
35
40
45
Load Current (Amps)
Maximum Current Temperature Derating at sea level
(Vin = 48V, airflow from -Vin to +Vin, with heat sink)
60
60
50
50
Output Current (Amps)
Output Current (Amps)
Maximum Current Temperature Derating at sea level
(Vin = 44V, airflow from -Vin to +Vin, with heat sink)
40
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
30
20
10
40
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
30
20
10
0
0
40
50
60
70
80
85
40
50
Ambient Temperature (°C)
70
80
85
Maximum Current Temperature Derating at sea level
(Vin = 60V, airflow from -Vin to +Vin, with heat sink)
60
60
50
50
Output Current (Amps)
Output Current (Amps)
Maximum Current Temperature Derating at sea level
(Vin = 54V, airflow from -Vin to +Vin, with heat sink)
40
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
30
60
Ambient Temperature (°C)
20
10
40
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
30
20
10
0
0
40
50
60
70
Ambient Temperature (°C)
80
85
40
50
60
70
80
85
Ambient Temperature (°C)
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MDC_DRQ-12/50-L48NK.B03 Page 5 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
Transverse
Longitudinal
Maximum Current Temperature Derating at sea level
(Vin = 44V, airflow from -Vin to +Vin, with baseplate)
Maximum Current Temperature Derating at sea level
(Vin = 44V, airflow from Vin to Vout, with baseplate)
60
60
55
55
50
50
45
45
Output Current (Amps)
Output Current (Amps)
PERFORMANCE DATA
40
35
30
25
20
15
10
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
40
35
30
25
20
15
10
5
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
5
0
0
40
45
50
55
60
65
70
75
80
85
40
45
50
55
Ambient Temperature (°C)
55
50
50
45
45
Output Current (Amps)
Output Current (Amps)
60
55
40
35
30
15
10
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
75
80
85
80
85
80
85
40
35
30
25
20
15
10
5
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
5
0
0
40
45
50
55
60
65
70
75
80
85
40
45
50
55
Ambient Temperature (°C)
55
50
50
45
45
Output Current (Amps)
60
55
40
35
30
20
15
10
65
70
75
Maximum Current Temperature Derating at sea level
(Vin = 60V, airflow from Vin to Vout, with baseplate)
60
25
60
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 60V, airflow from -Vin to +Vin, with baseplate)
Output Current (Amps)
70
Maximum Current Temperature Derating at sea level
(Vin = 48V, airflow from Vin to Vout, with baseplate)
60
20
65
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 48V, airflow from -Vin to +Vin, with baseplate)
25
60
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
40
35
30
25
20
15
10
5
5
0
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
2.5 m/s (500 LFM)
3.0 m/s (600 LFM)
0
40
45
50
55
60
65
Ambient Temperature (°C)
70
75
80
85
40
45
50
55
60
65
70
75
Ambient Temperature (°C)
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MDC_DRQ-12/50-L48NK.B03 Page 6 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
PERFORMANCE DATA
Enable Startup Delay (Vin = 48V, Iout = 50A, Cout = 10000μF, Ta = +25°C)
Ch2 = Vout, Ch4 = Enable.
Startup Delay (Vin = 48V, Iout = 50A, Cout = 10000μF, Ta = +25°C)
Ch1 = Vin, Ch2 = Vout.
Stepload Transient Response (Vin = 48V, Iout = 50-75-50% of Iout, Cload = 1000μF)
Stepload Transient Response (Vin = 48V, Iout = 25-75-25% of Iout, Cload = 1000μF)
Output Ripple & Noise (Vin = 48V, Iout = 0A, Cout = 1μF || 10μF, Ta = +25°C)
Output Ripple & Noise (Vin = 48V, Iout = 50A, Cout = 1μF || 10μF, Ta = +25°C)
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MDC_DRQ-12/50-L48NK.B03 Page 7 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
PERFORMANCE DATA
Output v. Input Voltage @ 50% Load
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
VIN OFF
VIN ON
Output Voltage
12
10
VIN OFF
8
VIN ON
6
4
2
39.0
39.4
39.8
40.2
40.6
41.0
41.4
41.8
42.2
42.6
43.0
43.4
43.8
0
39.0
39.4
39.8
40.2
40.6
41.0
41.4
41.8
42.2
42.6
43.0
43.4
43.8
Output Voltage
Output v. Input Voltage @ No Load
13
12
11
10
9
8
7
6
5
4
3
2
1
0
VIN OFF
VIN ON
39.0
39.4
39.8
40.2
40.6
41.0
41.4
41.8
42.2
42.6
43.0
43.4
43.8
Output Voltage
Output v. Input Voltage @ Full Load
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MDC_DRQ-12/50-L48NK.B03 Page 8 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
ABC (PMBUS) MECHANICAL SPECIFICATIONS WITH HEAT SINK
[36.8]
1.45
NOTES:
UNLESS OTHERWISE SPECIFIED:
1: ALL DIMENSIONS ARE IN INCHES [MILLIMETERS];
2: ALL TOLERANCES: ×.××in, ±0.02in (×.×mm, ±0.5mm)
×.×××in, ±0.01in (×.××mm, ±0.25mm)
3: COMPONENTS WILL VARY BETWEEN MODELS
4: STANDARD PIN LENGTH: 0.180 Inch
FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE.
1.10 [28.0]Max
[58.4]
2.30
L
SEE NOTE 4
PIN S 1-3,:
I 0.040 ±0.0015 (1.016 ±0.038 )
Shoulde r: I 0.076 ±0.005 (1.93±0.13)
PIN S 4,8:
I 0.062 ±0.0015 (1.575 ±0.038 )
Shoul de r: I 0.098 ±0.005 (2.49±0.13)
0.010 minimum clearance
between standoffs and
highest component
[10.80]
0.425
[50.80]
2.000
ISOMETRIC VIEW
5
2
6 7
8 9
10 11
12 13
14 15
1
16
PIN SIDE VIEW
[10.80]
0.425
4
[15.24]
0.600
[15.24]
0.600
0.079
[2.0]
Pin
SQ 0.02 [0.50]
0.079 [2.0]
INPUT/OUTPUT CONNECTIONS
Designation
Function
1
+VIN
Positive Input
2
On/Off 1 Control
Primary On/Off Control
3
No Pin
No Pin
4
–VIN
Negative Input
5
–VOUT
Negative Output
6
+S
Positive Remote Sense
7
–S
Negative Remote Sense
8
SA0
Address Pin 0
9
SA1
Address Pin 1
10
SCL
PMBus Clock
11
SDA
PMBus Data
12
PG
Power Good Output
13
DGND
PMBus Ground
14
SMBALERT
PMBus Alert Signal
15
On/Off 2 Control
Secondary On/Off Control
16
+VOUT
Positive Output
Dimensions are in inches (mm) shown for ref. only.
Third Angle Projection
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
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MDC_DRQ-12/50-L48NK.B03 Page 9 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
ABC (PMBUS) MECHANICAL SPECIFICATIONS WITH BASEPLATE
[26.16]
1.030
NOTES:
UNLESS OTHERWISE SPECIFIED:
1: M3 SCREW USED TO BOLT UNIT'S BASEPLATE TO OTHER SURFACES
(SUCH AS HEATSINK) MUST NOT EXCEED 0.11''(2.8mm) DEPTH BELOW
THE SURFACE OF BASEPLATE
2: APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb (0.6Nm);
3: ALL DIMENSIONS ARE IN INCHES [MILIMETERS];
4: ALL TOLERANCES: ×.××in, ±0.02in (×.×mm, ±0.5mm)
×.×××in, ±0.01in (×.××mm, ±0.25mm)
5: COMPONENTS WILL VARY BETWEEN MODELS
6: STANDARD PIN LENGTH: 0.180 Inch
FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE.
M3 THREAD TYP 3PL
[5.59]
0.220
[47.24]
1.860
[13.2]
0.52 Max
[36.8]
1.45
[5.33]
0.210
[58.4]
2.30
WITH BASEPLATE OPTION
L
SEE NOTE 6
PINS 1-3:
Î0.040±0.0015(1.016±0.038)
Shoulder: Î0.076±0.005(1.93±0.13)
PINS 4,8:
Î0.062±0.0015(1.575±0.038)
Shoulder: Î0.098±0.005(2.49±0.13)
0.010 minimum clearance
between standoffs and
highest component
[50.80]
2.000
4
5
2
6
8
10
12
14
7
9
11
13
15
16
1
[15.24]
0.600
[15.24]
0.600
0.079
[2.0]
Pin
[0.50]
SQ 0.02
PIN SIDE VIEW
0.079 [2.0]
ISOMETRIC VIEWCONNECTIONS
INPUT/OUTPUT
Designation
Function
1
+VIN
Positive Input
2
On/Off 1 Control
Primary On/Off Control
3
No Pin
No Pin
4
–VIN
Negative Input
5
–VOUT
Negative Output
6
+S
Positive Remote Sense
7
–S
Negative Remote Sense
8
SA0
Address Pin 0
9
SA1
Address Pin 1
10
SCL
PMBus Clock
11
SDA
PMBus Data
12
PG
Power Good Output
13
DGND
PMBus Ground
14
SMBALERT
PMBus Alert Signal
15
On/Off 2 Control
Secondary On/Off Control
16
+VOUT
Positive Output
Dimensions are in inches (mm) shown for ref. only.
Third Angle Projection
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B03 Page 10 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
ABC (PMBUS) RECOMMENDED FOOTPRINT
(2x)
0.120
3.05 MIN FOR
PIN SHOULDERS
2.32 ±0.02
58.93 ±0.50
(3x)
0.100
2.54 MIN FOR
PIN SHOULDERS
2.000 ±0.010
50.80 ±0.25
(2x)
0.082 ±0.005
2.08 ±0.13
CL
(10x)
1
14
12
10
8
6
2
4
15
13
11
9
7
CL
5
(4x)
(3x)
0.060 ±0.005
1.52 ±0.13
1.000 ±0.010
25.40 ±0.25
0.457 ±0.010
11.62 ±0.25
16
0.079 ±0.010
2 ±0.25
0.300 ±0.010
7.62 ±0.25
0.600 ±0.010
15.24 ±0.25
1.47 ±0.02
37.34 ±0.50
0.051 ±0.005
1.30 ±0.13
0.079 ±0.010
2 ±0.25
1.961 ±0.010
49.80 ±0.25
TOP VIEW
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B03 Page 11 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
[36.8]
1.45
MECHANICAL SPECIFICATIONS (NO PMBUS) WITH HEAT SINK
[58.4]
2.30
L
[28]
1.10 Max
SEE NOTE 4
NOTES:
UNLESS OTHERWISE SPECIFIED:
1: ALL DIMENSIONS ARE IN INCHES [MILLIMETERS];
2: ALL TOLERANCES: ×.××in, ±0.02in (×.×mm, ±0.5mm)
×.×××in, ±0.01in (×.××mm, ±0.25mm)
3: COMPONENTS WILL VARY BETWEEN MODELS
4: STANDARD PIN LENGTH: 0.180 Inch
FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE.
5: DOSA 5 PIN COMPATIBLE
PIN S 1-3,:
I 0.040 ±0.0015 (1.016 ±0.038 )
Shoulde r: I 0.076 ±0.005 (1.93 ±0.13 )
PIN S 4,8:
I 0.062 ±0.0015 (1.575 ±0.038 )
Shoul de r: I 0.098 ±0.005 (2.49 ±0.13 )
0.010 minimum clearance
between standoffs and
highest component
4
2
[10.80]
0.425
3
[15.24]
0.600
[15.24]
0.600
[10.80]
0.425
[50.80]
2.000
1
8
PIN SIDE VIEW
ISOMETRIC VIEW
Dimensions are in inches (mm) shown for ref. only.
Third Angle Projection
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
I/O Connections
Pin
1
2
3
4
8
Function
+Vin
Remote On/Off Control
-Vin
-Vout
+Vout
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B03 Page 12 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
MECHANICAL SPECIFICATIONS (NO PMBUS) WITH BASEPLATE
[36.8]
1.45
[26.16]
1.030
[5.33]
0.210
[58.4]
2.30
NOTES:
UNLESS OTHERWISE SPECIFIED:
1: M3 SCREW USED TO BOLT UNIT'S BASEPLATE TO OTHER SURFACES
(SUCH AS HEATSINK) MUST NOT EXCEED 0.11''(2.8mm) DEPTH BELOW
THE SURFACE OF BASEPLATE
2: APPLIED TORQUE PER SCREW SHOULD NOT EXCEED 5.3In-lb (0.6Nm);
3: ALL DIMENSIONS ARE IN INCHES [MILIMETERS];
4: ALL TOLERANCES: ×.××in, ±0.02in (×.×mm, ±0.5mm)
×.×××in, ±0.01in (×.××mm, ±0.25mm)
5: COMPONENTS WILL VARY BETWEEN MODELS
6: STANDARD PIN LENGTH: 0.180 Inch
FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE.
M3 THREAD TYP 3PL
[47.24]
1.860
7: DOSA 5 PIN COMPATIBLE
[13.2]
0.52 Max
[5.59]
0.220
WITH BASEPLATE OPTION
L
SEE NOTE 6
PINS 1-3:
Î0.040±0.0015(1.016±0.038)
Shoulder: Î0.076±0.005(1.93±0.13)
PINS 4,8:
Î0.062±0.0015(1.575±0.038)
Shoulder: Î0.098±0.005(2.49±0.13)
0.010 minimum clearance
between standoffs and
highest component
[50.80]
2.000
4
[15.24]
0.600
[15.24]
0.600
3
2
1
8
PIN SIDE VIEW
ISOMETRIC VIEW
Dimensions are in inches (mm) shown for ref. only.
Third Angle Projection
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
I/O Connections
Pin
1
2
3
4
8
Function
+Vin
Remote On/Off Control
-Vin
-Vout
+Vout
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B03 Page 13 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
RECOMMENDED FOOTPRINT (NO PMBUS)
(3x)
0.100
2.54 MIN FOR
PIN SHOULDERS
2.32 ±0.02
58.93 ±0.50
(2x)
2.000 ±0.010
50.80 ±0.25
0.082 ±0.005
2.08 ±0.13
0.300 ±0.010
7.62 ±0.25
0.600 ±0.010
15.24 ±0.25
1.47 ±0.02
37.34 ±0.50
CL
1
8
2
CL
3
4
(2x)
(3x)
0.060 ±0.005
1.52 ±0.13
0.120
3.05 MIN FOR
PIN SHOULDERS
1.000 ±0.010
25.40 ±0.25
TOP VIEW
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B03 Page 14 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
STANDARD PACKAGING
BASEPLATE VERSION
9.92
(251.97)
REF
HEATSINK VERSION
9.92
(251.97)
REF
Each static dissipative polyethylene
foam tray accommodates
12 converters in a 3 x 4 array.
0.88 (22.35)
REF
Each static dissipative polyethylene
foam tray accommodates
15 converters in a 3 x 5 array.
4.25 (108) ±.25
closed height
2.75 (69.85) ±.25
closed height
11.00 (279.4) ±.25
10.50 (266.7) ±.25
10.0 (254) ±.25
Carton accommodates two (2) trays yielding 30 converters per carton
10.0 (254) ±.25
Carton accommodates two (2) trays yielding 24 converters per carton
Dimensions are in inches (mm) shown for ref. only.
Third Angle Projection
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B03 Page 15 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
TECHNICAL NOTES
Power Management Overview
The module includes a wide range of readable and configurable power
management features that are easy to implement with a minimum of external
components. Furthermore, the module includes protection features that
continuously protect the load from damage due to unexpected system faults.
The SMBALERT pin alerts the host if there is a fault in the module. The following product parameters can continuously be monitored by a host: Vout, Iout,
Vin, Temperature, and Power Good. The module is distributed with a default
configuration suitable for a wide range operation in terms of Vin, Vout, and
load. All power management functions can be reconfigured using the PMBus
interface. The product provides a PMBus digital interface that enables the user
to configure many aspects of the device operation as well as monitor the input
and output parameters. Please contact our FAE for special configurations.
Soft-start Power Up
The default rise time of the ramp up is 20 ms. When starting by applying
input voltage the control circuit boot-up time adds an additional 10 ms delay.
The soft-start power up of the module can be reconfigured using the PMBus
interface.
Over Voltage Protection (OVP)
The module includes over voltage limiting circuitry for protection of the load.
The default OVP limit is 20% above the nominal output voltage. If the output
voltage surpasses the OVP limit, the module can respond in different ways.
The default response from an over voltage fault is to immediately shut down.
The device will continuously check for the presence of the fault condition,
and when the fault condition no longer exists the device will be re-enabled.
The OVP fault level and fault response can be reconfigured using the PMBus
interface.
PMBus Interface
This module offers a PMBus digital interface that enables the user to configure
many characteristics of the device operation as well as to monitor the input
and output voltages, output current and device temperature. The module can
be used with any standard two-wire I2C or SMBus host device. In addition, the
module is compatible with PMBus version 1.2 and includes an SMBALERT line
to help alleviate bandwidth limitations related to continuous fault monitoring.
The module supports 100 kHz and 400 kHz bus clock frequency only.
Monitoring via PMBus
A system controller (host device) can monitor a wide variety of parameters
through the PMBus interface. The controller can monitor fault conditions by
monitoring the SMBALERT pin, which will be asserted when any number of
pre-configured fault or warning conditions occur. The system controller can
also continuously monitor any number of power conversion parameters including but not limited to the following:
• Input voltage
• Output voltage
• Output current
• Module temperature
Software Tools for Design and Production
For these modules, Murata-PS provides software for configuring and monitoring via the PMBus interface. For more information please contact your local
Murata-PS representative.
Click here for Application Note AN-63, Digital DC-DC Evaluation Board
User Guide.
Click here for Application Note AN-64, Murata Power Brick GUI User Guide.
Over Current Protection (OCP, Current limit)
The module includes current limiting circuitry for protection at continuous over
load. The default setting for the product is hicup mode. The current limit could
be configured by simply setting the IOUT_OC_FAULT_LIMIT to be greater than
the IOUT_OC_WARN_LIMIT. The maximum value that the current limit could be
set is 50A.
Power Good
The module provides Power Good (PG) flag in the Status Word register that
indicates the output voltage is within a specified tolerance of its target level
and no fault condition exists. The Power Good pin default logic is negative and
it can be configured by MFR_PGOOD_POLARITY.
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B03 Page 16 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
PMBus Addressing
Figure 2 and the accompanying table display the recommended resistor values
for hard-wiring PMBus addresses (1% tolerance resistors recommended): The
address is set in the form of two octal (0 to 7) digits, with each pin setting one
digit. The resistor values for each digit is shown below.
The SA0 and SA1 pins can be configured with a resistor to GND according to
the following equation.
PMBus Address = 8 x (SA0value) + (SA1 value)
If the calculated PMBus address is 0d, 11d or 12d, PMBus address 119d is
assigned instead. From a system point of view, the user shall also be aware of
further limitations of the addresses as stated in the PMBus Specification. It is
not recommended to keep the SA0 and SA1 pins left open.
SA0
SA1
R1
R0
Figure 2. Schematic of Connection of Address Resistors
PMBus Commands
The products are designed to be PMBus compliant. The following tables list
the implemented PMBus read commands. For more detailed information see
“PMBus Power System Management Protocol Specification, Part I – General
Requirements, Transport and Electrical Interface” and “PMBus Power System
Management Protocol, Part II – Command Language.”
Digit (SA0, SA1 index)
Resistor Value [kΩ]
0
1
2
3
4
5
6
7
10
22
33
47
68
100
150
220
OVERALL
CMD
Command Name
SMBus
Transaction
Type:
Writing
Data
SMBus
Transaction
Type:
Reading
Data
01h
02h
03h
10h
11h
12h
15h
16h
19h
20h
21h
22h
25h
26h
28h
40h
41h
OPERATION2
ON_OFF_CONFIG3
CLEAR_FAULTS
WRITE_PROTECT
STORE_DEFAULT_ALL4
RESTORE_DEFAULT_ALL4
STORE_USER_ALL4
RESTORE_USER_ALL4
CAPABILITY
VOUT_MODE
VOUT_COMMAND
VOUT_TRIM
VOUT_MARGIN_HIGH
VOUT_MARGIN_LOW
VOUT_DROOP
VOUT_OV_FAULT_LIMIT
VOUT_OV_FAULT_RESPONSE5
Write Byte
Write Byte
Send byte
Write Byte
Send byte
Send byte
Send byte
Send byte
N/A
N/A
Write Word
Write Word
Write Word
Write Word
Write Word12
Write Word
Write Byte
Read Byte
Read Byte
N/A
Read Byte
N/A
N/A
N/A
N/A
Read Byte
Read Byte
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Byte
1
1
0
1
0
0
0
0
1
1
2
2
2
2
2
2
1
Number
of Data Default Value
Bytes
Lower
Limit
Upper
Limit
0x80
0x1D
N/A
0x00
N/A
N/A
N/A
N/A
0xB0
0x17
12.000
0
13.199
8.100
0/1213
14.199
0xB8
8.100
8.100
8.100
0
8.100
13.200
13.199
13.200
100
15.600
42h
VOUT_OV_WARN_LIMIT
Write Word
Read Word
2
13.500
8.100
15.600
46h
47h
4Ah
4Fh
50h
51h
55h
56h
IOUT_OC_FAULT_LIMIT
IOUT_OC_FAULT_RESPONSE6
IOUT_OC_WARN_LIMIT
OT_FAULT_LIMIT
OT_FAULT_RESPONSE5
OT_WARN_LIMIT
VIN_OV_FAULT_LIMIT
VIN_OV_FAULT_RESPONSE7
Write Word
Write Byte
Write Word
Write Word
Write Byte
Write Word
Write Word
Write Byte
Read Word
Read Byte
Read Word
Read Word
Read Byte
Read Word
Read Word
Read Byte
2
1
2
2
1
2
2
1
59.00
0xF8
56.00
135
0xB8
115
66.50
0xF8
0.00
0.00
30
30
32.00
65.00
65.00
145
145
110.00
57h
VIN_OV_WARN_LIMIT
Write Word
Read Word
2
64.50
32.00
110.00
58h
VIN_UV_WARN_LIMIT
Write Word
Read Word
2
42.00
32.00
75.00
59h
5Ah
VIN_UV_FAULT_LIMIT
VIN_UV_FAULT_RESPONSE7
Write Word
Write Byte
Read Word
Read Byte
2
1
40.00
0xF8
32.00
75.00
Cross check
Unit
8.1VOUT_OV_WARN_LIMIT
VOUT_COMMAND
>IOUT_OC_WARN_LIMIT
OT_WARN_LIMIT
VIN_OV_WARN_LIMIT
VIN_UV_WARN_LIMIT
VIN_UV_FAULT_LIMIT
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