DRQ-12/50-L48PKAL2-C [MURATA]
民用设备,工业设备;
| 型号： | DRQ-12/50-L48PKAL2-C |
| 厂家： | 
muRata |
| 描述： | 民用设备,工业设备 |
| 文件： | 总26页 (文件大小：823K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DRQ-12/50-L48 Series
s
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
PRODUCT OVERVIEW
Typical unit
The DRQ 600W series provides a fully regulated, and planar magnetics deliver galvanic isolation
digitally controlled DC output in a ¼-brick format
that will support the evolving Advanced Bus Con-
verter (ABC) industry standard footprint for isolated
board mounted power modules. The DRQ series
rated at 2250 Vdc for functional insulation. Target
markets include Networking Equipment, Power
over Ethernet applications, Wireless Network-
ing Equipment, Telecommunications Equipment,
supports advances in power conversion technology Wireless pre-amplifiers, Industrial and test equip-
including a digital interface supporting the PMBus
protocol for communications to power modules.
The DRQ series offers high output current (up to
50 Amps) in an industry standard “quarter brick”
ackage. 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 ap-
plications.
ment, 12V Fan trays and applications requiring a
regulated 12V output.
A wealth of self-protection features include input
undervoltage lockout and overtemperature shut-
down; over current protection using the “hiccup”
autorestart technique, provides indefinite short-
circuit 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.
FEATURES
Fixed DC outputs, 12V @ 50A
Advanced Bus Converter industry standard
quarter-brick with digital PMBus™ interface
A digitally controlled version is also available
with the Advanced Bus Converter (ABC) pinout.
Advanced automated surface mount assembly
Optional five pin version (DOSA compatible
pinouts)
44-60 VDC input range
Load sharing option
Baseplate & heatsink options
APPLICATIONS
Embedded systems, datacom and telecom
96% typical efficiency
Instrumentation systems, R&D platforms, auto-
mated test fixtures
2250 VDC isolation
installations, wireless base stations
Disk farms, data centers and cellular repeater sites
Certified to UL 60950-1, CSA-C22.2 No. 60950-1,
2nd edition safety approvals
Data concentrators, voice forwarding and
Remote sensor systems, dedicated controllers
speech processing systems
Extensive self-protection, OVP, input undervolt-
age, current limiting and thermal shutdown
F1
+Vin (1)
+Vout (8)
Barrier
External
DC
Power
Source
On/Off
Control
(2)
Controller
and Power
Open = On
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.B02 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
Input
R/N (mV
pk-pk)
Regulation
(mV, max.)
IOUT
IIN full
load
Efficiency
Dimensions with heat sink
(inches) (mm)
95% 96% 2.3 x 1.45 x 1.1 58.4 x 36.8 x 27.94
VOUT (Amps, Power
VIN Nom. Range
IIN no
(Volts) max.) (Watts) Typ. Max.
Line
100
Load
(Volts) (Volts) load (mA) (Amps) Min. Typ.
Root Model ➀
DRQ-12/50-L48
12 50 600 150 200
120
48 44-60 150 13.02
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
detailed specifications. Output capacitors are 1 μF || 10 μF. These caps are necessary for our test equip-
ment 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
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.
DRQ-12/50-L48NKL1-C
Complete Model Number Example:
Negative On/Off logic, Integrated Heat Sink installed, 0.110˝ pin length, RoHS-6 compliance
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 2 of 26
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
Minimum
Typical/Nominal
Maximum
60
2250
13.5
Units
Vdc
Vdc
Vdc
W
Conditions ➀
0
Input to output, continuous
Power on, referred to -Vin
0
0
612
Current-limited, no damage, short-circuit
protected
Output Current
0
50
A
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.
INPUT
Conditions ➀ ➂
Operating voltage range
Recommended External Fuse
Start-up threshold
Undervoltage shutdown
Overvoltage Shutdown
Overvoltage Recover
Internal Filter Type
44
48
25
42
40
66
64
Pi
60
Vdc
A
Vdc
Vdc
Vdc
Vdc
Fast blow
Rising input voltage
Falling input voltage
41
39
64
62
43
41
68
66
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
Vin = nominal
Vin = minimum
13.02
14.2
0.15
0.05
150
10
100
Monotonic
14.02
14.28
0.30
0.1
200
20
A
A
A2-Sec.
A
Iout = minimum, unit = ON
mA
mA
mA, p-p
Measured at input with specified filter
External output voltage < Vset
180
GENERAL and SAFETY
Efficiency
Vin = 48V, full load
Vin = min., full load
95
95.5
96
96
%
%
Isolation
Isolation Voltage
Isolation Voltage
Isolation Voltage
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
Input to output, continuous
Input to baseplate, continuous
Output to baseplate, continuous
2250
1500
1500
Vdc
Vdc
Vdc
functional
10
1500
MΩ
pF
Certified to UL-60950-1, CSA-C22.2 No. 60950-
1, IEC 60950-1, 2nd edition
Per Telcordia SR332, issue 2, class 3, method 1,
ground fixed, Tambient = +25°C
Safety
Yes
3.2
Calculated MTBF
Hours x 106
DYNAMIC CHARACTERISTICS
Fix Frequency Control
Vin Startup delay time
Enable startup delay time
Rise Time
150
25
3
KHz
mS
mS
mS
Power on to Vout regulated
Remote ON to Vout regulated
30
5
20
15
50-75-50% load step, settling time to within 1%
of Vout (Cout=3300μF)
Dynamic Load Response
200
250
250
300
μSec
mV
Dynamic Load Peak Deviation
FEATURES and OPTIONS
Remote On/Off Control ➃
“N” suffix:
same as above
Negative Logic, ON state
Negative Logic, OFF state
Control Pin Shutdown Current
Control Pin On Current
“P” suffix:
ON = Ground pin or external voltage
OFF = Pin open or external voltage
Open collector/drain
-0.1
3.5
0.8
13.5
5
V
V
mA
mA
1
Positive Logic, ON state
Positive Logic, OFF state
Control Pin Shutdown Current
Control Pin On Current
ON = Pin open or external voltage
OFF = Ground pin or external voltage
Open collector/drain
3.5
0
13.5
0.8
1
V
V
mA
mA
5
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MDC_DRQ-12/50-L48NK.B02 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
Conditions ➀
Minimum
Typical/Nominal
Maximum
Units
W
0
600
612
Voltage
Nominal Output Voltage
Setting Accuracy
Output Voltage
Overvoltage Protection
Current
No trim, all conditions
At 50% load, no trim
@Vin=48V, Iout=0, Ta=+25°C
Via magnetic feedback
11.76
-2
11.95
13.8
12
12.24
2
12.05
15.6
Vdc
% of Vnom
Vdc
14.4
Vdc
Output Current Range
Minimum Load
Current Limit Inception
Short Circuit
0
50
60
A
A
90% of Vout, after warmup
56
58
Hiccup technique, autorecovery within 1.25%
of Vout
Short Circuit Current
0.4
1
A
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
Output shorted to ground, no damage
Current limiting
Continuous
Regulation ➄
Line Regulation
Load Regulation
Ripple and Noise ➅
40
40
150
100
120
200
0.02
10,000
mV
mV
Iout = min. to max.
5 Hz- 20 MHz BW
At all outputs
mV pk-pk
% of Vout./°C
ꢀF
Temperature Coefficient
Maximum Capacitive Loading
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
Low ESR
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
Inches
mm
Inches
mm
Ounces
Grams
Ounces
Grams
Inches
mm
LxWxH
LxWxH
96
2.63
74.5
Weight with baseplate
Through Hole Pin Diameter
0.04 & 0.062
1.016 & 1.575
Copper alloy
98.4-299
Through Hole Pin Material
TH Pin Plating Metal and Thickness
Nickel subplate
Gold overplate
μ-inches
μ-inches
4.7-19.6
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
°C
°C
°C
°C
135
B
Class
RoHS-6
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 ꢀ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.
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.
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.
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MDC_DRQ-12/50-L48NK.B02 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
94
92
90
88
86
84
V
V
V
IN = 44V
IN = 48V
IN = 60V
5
10
15
20
25
30
35
40
45
Load Current (Amps)
Maximum Current Temperature Derating at sea level
(Vin = 44V, airflow from -Vin to +Vin, with heat sink)
Maximum Current Temperature Derating at sea level
(Vin = 48V, airflow from -Vin to +Vin, with heat sink)
60
50
40
30
20
10
0
60
50
40
30
20
10
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)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
40
50
60
70
80
85
40
50
60
70
80
85
Ambient Temperature (°C)
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 54V, airflow from -Vin to +Vin, with heat sink)
Maximum Current Temperature Derating at sea level
(Vin = 60V, airflow from -Vin to +Vin, with heat sink)
60
50
40
30
20
10
0
60
50
40
30
20
10
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)
0.5 m/s (100 LFM)
1.0 m/s (200 LFM)
1.5 m/s (300 LFM)
2.0 m/s (400 LFM)
40
50
60
70
80
85
40
50
60
70
80
85
Ambient Temperature (°C)
Ambient Temperature (°C)
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MDC_DRQ-12/50-L48NK.B02 Page 5 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
PERFORMANCE DATA
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
55
50
45
40
35
30
25
20
15
10
5
60
55
50
45
40
35
30
25
20
15
10
5
0.5 m/s (100 LFM)
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)
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
0
40
45
50
55
60
65
70
75
80
85
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (°C)
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 48V, airflow from -Vin to +Vin, with baseplate)
Maximum Current Temperature Derating at sea level
(Vin = 48V, airflow from Vin to Vout, with baseplate)
60
55
50
45
40
35
30
25
20
15
10
5
60
55
50
45
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)
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
0
40
45
50
55
60
65
70
75
80
85
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (°C)
Ambient Temperature (°C)
Maximum Current Temperature Derating at sea level
(Vin = 60V, airflow from -Vin to +Vin, with baseplate)
Maximum Current Temperature Derating at sea level
(Vin = 60V, airflow from Vin to Vout, with baseplate)
60
55
50
45
40
35
30
25
20
15
10
5
60
55
50
45
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)
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
0
40
45
50
55
60
65
70
75
80
85
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (°C)
Ambient Temperature (°C)
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MDC_DRQ-12/50-L48NK.B02 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.B02 Page 7 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
PERFORMANCE DATA
Output v. Input Voltage @ No Load
Output v. Input Voltage @ 50% Load
13
12
11
10
9
8
7
14
12
10
8
VIN OFF
VIN ON
VIN OFF
VIN ON
6
5
6
4
3
4
2
1
0
2
0
Output v. Input Voltage @ Full Load
13
12
11
10
9
8
7
VIN OFF
VIN ON
6
5
4
3
2
1
0
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MDC_DRQ-12/50-L48NK.B02 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
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.
[58.4]
2.30
SEE NOTE 4
PINS 1-3,:
I 0.040 0.0015 (1.016 0.038)
Shoulde r: I 0.076 0.005(1.93 0.13)
PINS 4,8:
0.010 minimum clearance
between standoffs and
highest component
I 0.062 0.0015 (1.575 0.038)
Shoulder: I 0.098 0.005(2.49 0.13)
[50.80]
2.000
ISOMETRIC VIEW
INPUT/OUTPUT CONNECTIONS
Pin
1
Designation
+VIN
Function
Positive Input
2
On/Off 1 Control
No Pin
–VIN
Primary On/Off Control
No Pin
4
2
1
5
3
6
7
4
Negative Input
8
9
10 11
12 13
14 15
5
–VOUT
+S
Negative Output
Positive Remote Sense
Negative Remote Sense
Address Pin 0
6
16
7
–S
8
SA0
9
SA1
Address Pin 1
SQ 0.02 [0.50]
0.079 [2.0]
10
11
12
13
14
15
16
SCL
PMBus Clock
PIN SIDE VIEW
SDA
PMBus Data
PG
Power Good Output
PMBus Ground
DGND
SMBALERT
On/Off 2 Control
+VOUT
PMBus Alert Signal
Secondary On/Off Control
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 2ꢁ
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MDC_DRQ-12/50-L48NK.B02 Page 9 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
ABC (PMBUS) MECHANICAL SPECIFICATIONS WITH BASEPLATE
[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)
M3 THREAD TYP 3PL
5: COMPONENTS WILL VARY BETWEEN MODELS
6: STANDARD PIN LENGTH: 0.180 Inch
FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE.
[5.59]
0.220
[47.24]
1.860
WITH BASEPLATE OPTION
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:
0.010 minimum clearance
between standoffs and
highest component
Î0.062 0.0015(1.575 0.038)
Shoulder: Î0.098 0.005(2.49 0.13)
[50.80]
2.000
INPUT/OUTPUT CONNECTIONS
Pin
1
Designation
+VIN
Function
Positive Input
Primary On/Off Control
No Pin
2
On/Off 1 Control
No Pin
–VIN
4
3
5
6
7
4
Negative Input
8
9
10 11
12 13
14 15
2
1
5
–VOUT
+S
Negative Output
Positive Remote Sense
Negative Remote Sense
Address Pin 0
6
16
7
–S
8
SA0
[0.50]
SQ 0.02
9
SA1
Address Pin 1
10
11
12
13
14
15
16
SCL
PMBus Clock
PIN SIDE VIEW
SDA
PMBus Data
PG
Power Good Output
PMBus Ground
0.079 [2.0]
DGND
SMBALERT
On/Off 2 Control
+VOUT
PMBus Alert Signal
Secondary On/Off Control
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 2ꢁ
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 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
C
L
(10x)
0.051 0.005
1.30 0.13
1
16
14 15
12 13
10 11
2
4
C
L
8
9
6
7
5
(3x)
0.079 0.010
2 0.25
1.000 0.010
25.40 0.25
0.060 0.005
1.52 0.13
1.961 0.010
49.80 0.25
TOP VIEW
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 11 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
MECHANICAL SPECIFICATIONS (NO PMBUS) WITH HEAT SINK
NOTES:
UNLESS OTHERWISE SPECIFIED:
[58.4]
2.30
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
SEE NOTE 4
FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE.
5: DOSA 5 PIN COMPATIBLE
PINS 1-3,:
I 0.040 0.0015 (1.016 0.038 )
Shoulde r: I 0.076 0.005 (1.93 0.13)
PINS 4,8:
0.010 minimum clearance
between standoffs and
highest component
I 0.062 0.0015 (1.575 0.038 )
Shoulde r: I 0.098 0.005 (2.49 0.13)
[50.80]
2.000
3
2
1
4
8
PIN SIDE VIEW
ISOMETRIC VIEW
Dimensions are in inches (mm) shown for ref. only.
I/O Connections
Third Angle Projection
Pin
1
Function
+Vin
2
Remote On/Off Control
3
-Vin
-Vout
+Vout
Tolerances (unless otherwise specified):
.XX 0.02 (0.5)
.XXX 0.010 (0.25)
Angles 2ꢁ
4
8
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 12 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
MECHANICAL SPECIFICATIONS (NO PMBUS) WITH BASEPLATE
[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)
M3 THREAD TYP 3PL
5: COMPONENTS WILL VARY BETWEEN MODELS
6: STANDARD PIN LENGTH: 0.180 Inch
FOR PIN LENGTH OPTIONS, SEE PART NUMBER STRUCTURE.
[5.59]
0.220
[47.24]
1.860
7: DOSA 5 PIN COMPATIBLE
WITH BASEPLATE OPTION
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:
0.010 minimum clearance
between standoffs and
highest component
Î0.062 0.0015(1.575 0.038)
Shoulder: Î0.098 0.005(2.49 0.13)
[50.80]
2.000
3
4
8
2
1
PIN SIDE VIEW
ISOMETRIC VIEW
Dimensions are in inches (mm) shown for ref. only.
I/O Connections
Third Angle Projection
Pin
1
Function
+Vin
2
Remote On/Off Control
3
-Vin
-Vout
+Vout
Tolerances (unless otherwise specified):
.XX 0.02 (0.5)
.XXX 0.010 (0.25)
Angles 2ꢁ
4
8
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 13 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
RECOMMENDED FOOTPRINT (NO PMBUS)
2.32 0.02
58.93 0.50
(2x)
(3x)
0.082 0.005
2.08 0.13
0.100
2.54 MIN FOR
PIN SHOULDERS
2.000 0.010
50.80 0.25
C
L
1
2
3
8
C
L
4
(2x)
0.120
3.05 MIN FOR
PIN SHOULDERS
(3x)
1.000 0.010
25.40 0.25
0.060 0.005
1.52 0.13
TOP VIEW
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 14 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
STANDARD PACKAGING
BASEPLATE VERSION
HEATSINK VERSION
9.92
(251.97)
REF
9.92
(251.97)
REF
Each static dissipative polyethylene
foam tray accommodates
12 converters in a 3 x 4 array.
Each static dissipative polyethylene
foam tray accommodates
15 converters in a 3 x 5 array.
0.88 (22.35)
REF
4.25 (108) .25
closed height
2.75 (69.85) .25
closed height
10.50 (266.7) .25
11.00 (279.4) .25
10.0 (254) .25
10.0 (254) .25
Carton accommodates two (2) trays yielding 30 converters per carton
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 2ꢁ
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 15 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
TECHNICAL NOTES
Power Management Overview
PMBus Interface
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 follow-
ing 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.
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 includ-
ing but not limited to the following:
• Input voltage
• Output voltage
• Output current
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.
• Module temperature
Over Voltage Protection (OVP)
Software Tools for Design and Production
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.
For these modules, Murata-PS provides software for configuring and monitor-
ing 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.B02 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.
SA0
SA1
R1
R0
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.
Figure 2. Schematic of Connection of Address Resistors
PMBus Commands
Digit (SA0, SA1 index)
Resistor Value [kΩ]
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.”
0
1
2
3
4
5
6
7
10
22
33
47
68
100
150
220
OVERALL
SMBus
Transaction
Type:
Writing
Data
Write Byte
Write Byte
Send byte
Write Byte
Send byte
Send byte
Send byte
Send byte
N/A
SMBus
Transaction
Type:
Reading
Data
Read Byte
Read Byte
N/A
Read Byte
N/A
Number
of Data Default Value
Bytes
Lower Upper
Limit Limit
CMD
Command Name
Cross check
Unit
01h
02h
03h
10h
11h
12h
15h
16h
19h
20h
21h
22h
25h
26h
28h
40h
41h
OPERATION2
ON_OFF_CONFIG3
CLEAR_FAULTS
1
1
0
1
0
0
0
0
1
1
2
2
2
2
2
2
1
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
WRITE_PROTECT
STORE_DEFAULT_ALL4
RESTORE_DEFAULT_ALL4
STORE_USER_ALL4
RESTORE_USER_ALL4
CAPABILITY
N/A
N/A
N/A
Read Byte
Read Byte
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Byte
VOUT_MODE
VOUT_COMMAND
VOUT_TRIM
VOUT_MARGIN_HIGH
VOUT_MARGIN_LOW
VOUT_DROOP
N/A
Write Word
Write Word
Write Word
Write Word
Write Word12
Write Word
Write Byte
8.100 13.200
V
V
V
V
mΩ
V
8.1<=Vout<=13.215
>VOUT_MARGIN_LOW
<VOUT_MARGIN_HIGH
Vout>=8.100
8.100 13.199
8.100 13.200
0
100
VOUT_OV_FAULT_LIMIT
VOUT_OV_FAULT_RESPONSE5
8.100 15.600
>VOUT_OV_WARN_LIMIT
<VOUT_OV_FAULT_LIMIT
>VOUT_COMMAND
>IOUT_OC_WARN_LIMIT
42h
VOUT_OV_WARN_LIMIT
Write Word
Read Word
2
13.500
8.100 15.600
V
A
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
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
0.00
65.00
0.00
30
65.00
145
<IOUT_OC_FAULT_LIMIT
>OT_WARN_LIMIT
A
°C
30
145
<OT_FAULT_LIMIT
>VIN_OV_WARN_LIMIT
°C
V
VIN_OV_FAULT_LIMIT
VIN_OV_FAULT_RESPONSE7
66.50
0xF8
32.00 110.00
<VIN_OV_FAULT_LIMIT
>VIN_UV_WARN_LIMIT
<VIN_OV_WARN_LIMIT
>VIN_UV_FAULT_LIMIT
<VIN_UV_WARN_LIMIT
57h
58h
VIN_OV_WARN_LIMIT
VIN_UV_WARN_LIMIT
Write Word
Write Word
Read Word
Read Word
2
2
64.50
42.00
32.00 110.00
V
32.00
32.00
75.00
75.00
V
V
59h
5Ah
VIN_UV_FAULT_LIMIT
VIN_UV_FAULT_RESPONSE7
Write Word
Write Byte
Read Word
Read Byte
2
1
40.00
0xF8
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 17 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
OVERALL (CONT.)
SMBus
Transaction
Type:
Writing
Data
SMBus
Transaction
Type:
Reading
Data
Number
of Data Default Value
Bytes
Lower Upper
CMD
Command Name
Cross check
Unit
Limit
Limit
5Eh
5Fh
60h
61h
64h
65h
78h
79h
7Ah
7Bh
7Ch
7Dh
7Eh
88h
8Bh
8Ch
8Dh
8Eh
94h
95h
96h
98h
POWER_GOOD_ON
POWER_GOOD_OFF
TON_DELAY
Write Word
Write Word
Write Word12
Write Word12
Write Word12
Write Word12
Write Byte
Write Word
Write Byte
Write Byte
Write Byte
Write Byte
Write Byte
N/A
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Byte
Read Word
Read Byte
Read Byte
Read Byte
Read Byte
Read Byte
Read Word
Read Word
Read Word
Read Word
Read Word*
Read Word
Read Word
Read Word
Read Byte
2
2
2
2
2
2
1
2
1
1
1
1
1
2
2
2
2
2
2
2
2
1
10.799
9.600
1
0
0
1.000 13.199
1.000 13.199
>POWER_GOOD_OFF
<POWER_GOOD_ON
V
V
ms
ms
ms
ms
1
10
0
500
100
500
100
TON_RISE16
TOFF_DELAY
TOFF_FALL16
0
10
STATUS_BYTE
STATUS_WORD
STATUS_VOUT
STATUS_IOUT
STATUS_INPUT
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
STATUS_TEMPERATURE
STATUS_CML
READ_VIN
READ_VOUT
READ_IOUT
V
V
A
°C
°C
%
kHZ
W
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
READ_TEMPERATURE_18
READ_TEMPERATURE_29
READ_DUTY_CYCLE
READ_FREQUENCY
READ_POUT
PMBUS_REVISION
0x42
“Murata Power
Solutions”
N/A
99h
MFR_ID
N/A
Block Read
22
9Ah
9Bh
9Dh
9Eh
A0h
A1h
A2h
A3h
A4h
A5h
A6h
A7h
A8h
A9h
B0h
B1h
C0h
D0h
DBh
DDh
DEh
E8h
E9h
EAh
F6h
F9h
FAh
FBh
FCh
MFR_MODEL10
MFR_REVISION10
MFR_DATE10
MFR_SERIAL10
MFR_VIN_MIN
MFR_VIN_MAX
MFR_IIN_MAX
MFR_PIN_MAX
MFR_VOUT_MIN
MFR_VOUT_MAX
MFR_IOUT_MAX
MFR_POUT_MAX
MFR_TAMBIENT_MAX
MFR_TAMBIENT_MIN
USER_DATA_00
USER_DATA_01
MFR_MAX_TEMP_1
Block Write*
Block Write*
Block Write*
Block Write*
N/A
Block Read
Block Read
Block Read
Block Read
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Read Word
Block Read
Block Read
Read Word
Read Byte
Read Byte
Read Byte
Read Byte
Read Word
Read Word
Read Word
Read Byte*
N/A
<=20
<=10
<=10
<=10
2
2
2
2
2
2
2
2
2
2
<=20
<=20
2
1
1
1
1
2
2
2
1
1
2
2
N/A
N/A
N/A
N/A
44.00
60.00
14.28
438
8.100
13.199
50.00
600
85
-40
“---”
“---”
135
0x00
0x00/0x0111
0x04/0x0614
0x00
2.00
2.00
20
0xC7
N/A
N/A
V
V
A
W
V
V
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
A
W
°C
°C
N/A
Block Write
Block Write
N/A
°C
MFR_VARIABLE_FREQUENCY_DISABLE
MFR_CURRENT_SHARE_CONFIG
MFR_PRIMARY_ON_OFF_CONFIG
MFR_PGOOD_POLARITY
MFR_VIN_OV_FAULT_HYS
MFR_VIN_UV_FAULT_HYS
MFR_OT_FAULT_HYS
MFR_CALIBRATION_STATUS
MFR_VIN_SENSE_CALIBRATION
MFR_IOUT_SENSE_CALIBRATION
MFR_VOUT_SET_POINT_CALIBRATION
MFR_SUPERVISOR_PASSWORD
Write Byte
Write Byte*
Write Byte
Write Byte
Write Word
Write Word
Write Word
N/A
Write byte*
Write Word*
Write Word*
Block Write
1.00
1.00
5
20.00
20.00
50
V
V
°C
N/A
N/A
N/A
N/A
N/A
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 18 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
OVERALL (CONT.)
Notes:
*
Only available in supervisor mode (default state is user mode, send password to comand 0xFC to
change to supervisor mode)
7. Restart delay unit: 100ms, lower limit: 100ms.
Turn off delay unit:0ms, lower limit: 0ms if bits 7:6=11b, restart delay is 100ms
8. Temperature of baseplate side
1. a) Unit restores the entire contents of the non-volatile User Store memory when power up
b) PEC is supported
9. Temperature of pin side
c) Max bus speed: 400kHZ
10.Unit’s actual inforamtion
d) SMBALERT# is supported
e) Linear data format used
f) addressing: If the calculated PMBus address is 0d, 11d or 12d, SA0 or SA1 lefts open, default
PMBus address 120d is assigned instead.
2. Not supported items:
11.Default value of DROOP CURRENT SHARE mode: 0x01
Default value of CURRENT SHARE DISABLED mode: 0x00
12.Not available in Droop current share mode
13.Locked to 12mΩ in DROOP CURRENT SHARE mode; configurable and default value is 0mΩ in CUR-
RENT SHARE DISABLED mode
100101XXb Margin Low(Ignore Fault),
14.Default value of negative logic: 0x04
101001XXb On Margin High(Ignore Fault)
Default value of positive logic: 0x06
3. Restart delay of turned off by OPEATION or CONTROL or primary on/off is 200ms
4. Unit will shutdown 1 second for protection , then recover automaticly
5. Restart delay unit: 500ms, lower limit: 500ms.
Turn off delay unit: 0ms, lower limit: 0ms
15.Unit can receive any value for VOUT_TRIM command, but Vout is limited to 8.1~13.2V, if calculated
Vout exceeds limit, then equal to limit.
16.Value of 0 is acceptable, which is the same as lower limit to unit.
if bits 7:6=11b, restart delay is 500ms
6. Restart delay unit and Turn off delay unit are same as note 5
Bits 7:6: 00b,01b,10b are not supported
MURATA-PS defined commands (01-CFh Refer to PMBus 1.2 SPEC)
D0h: MFR_VARIABLE_FREQUENCY_DISABLE
Purpose
Bits
Value
Meaning
7:1
0000000 Reserved
0
1
Turn on variable frequency control
Turn off variable frequency control
Variable frequency
control
0
DBh: MFR_CURRENT_SHARE_CONFIG
Bits
7:1
Purpose
Value
0000000 Reserved
Meaning
CTRL/CS Pin VOUT_DROOP TON_DELAY TOFF_DELAY
TON_RISE
--
TOFF_FALL
--
--
--
--
--
0
1
Current share disabled
Droop current share mode enabled
CTRL
CTRL
configurable
configurable
configurable
configurable
configurable
Droop Current
Share Control
0
locked to 0x000A locked to 0x0001 locked to 0x0000 locked to 0x0000 locked to 0x0000
DDh: MFR_PRIMARY_ON_OFF_CONFIG
Bits
Purpose
Value
Meaning
7:3
00000 Reserved
Controls how the
unit responds to
the CONTROL pin
0
1
0
1
0
Unit ignores the primary ON/OFF pin
Unit requires the primary ON/OFF pin to
be asserted to start the unit.
Active low (Pull pin low to start the unit)
Active high (Pull high or open to start
the unit)
2
Polarity of primary
ON/OFF logic
1
0
Reserved
DEh: MFR_ PGOOD_POLARITY
Bits
7:1
Purpose
Value
0000000 Reserved
Meaning
Negative logic, output low if Vout rises to
specific value
Positive logic, output high if Vout rises to
0
1
Power good
polarity of pin 12
0
specific value
E8h: MFR_VIN_OV_FAULT_HYS
Hysteresis of VIN_OV_FAULT recover, Linear data format
E9h: MFR_VIN_UV_FAULT_HYS
Hysteresis of VIN_UV_FAULT recover, Linear data format
EAh: MFR_OT_FAULT_HYS
Hysteresis of OT_FAULT recover, Linear data format
F6h: MFR_CALIBRATION_STATUS
Refer to calibration procedure file
F9h: MFR_VIN_SENSE_CALIBRATION
Refer to calibration procedure file
FAh: MFR_IOUT_SENSE_CALIBRATION
Refer to calibration procedure file
FBh: MFR_VOUT_SET_POINT_CALIBRATION
Refer to calibration procedure file
FCh: MFR_SUPERVISOR_PASSWORD
Set unit to supervisor mode or ROM mode, Refer to password table
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 19 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
STATUS WORD AND BYTE (GREEN = SUPPORTED)
STATUS_VOUT
STATUS_WORD
7 VOUT
6 IOUT/POUT
5 INPUT
4 MFR_SPECIFIC
3 POWER_GOOD#
2 FANS
1 OTHER
0 UNKNOWN
7 BUSY
STATUS_INPUT
7 VIN_OV_FAULT
7 VOUT_OV_FAULT
6 VOUT_OV_WARNING
5 VOUT_UV_WARNING
4 VOUT_UV_FAULT
3 VOUT_MAX Warning
2 TON_MAX_FAULT
1 TOFF_MAX_WARNING
0 VOUT Tracking Error
6 VIN_OV_WARNING
5 VIN_UV_WARNING
4 VIN_UV_FAULT
3 Unit Off For Low Input Voltage
2 IIN_OC_FAULT
1 IIN_OC_WARNING
0 PIN_OP_WARNING
6 OFF
STATUS_MFR_SPECIFIC
Manufacturer Defined
Manufacturer Defined
Manufacturer Defined
Manufacturer Defined
Manufacturer Defined
Manufacturer Defined
Manufacturer Defined
Manufacturer Defined
STATUS_IOUT
7 IOUT_OC_FAULT
5 VOUT_OV_FAULT
4 IOUT_OC_FAULT
3 VIN_UV_FAULT
2 TEMPERATURE
1 CML
6 IOUT_OC_LV_FAULT
5 IOUT_OC_WARNING
4 IOUT_UC_FAULT
3 Current Share Fault
2 In Power Limiting Mode
1 POUT_OP_FAULT
0 POUT_OP_WARNING
0 NONE OF THE ABOVE
STATUS_TEMPERATURE
7 OT_FAULT
STATUS_OTHER
7 Reserved
STATUS_FANS_1_2
7 Fan 1 Fault
6 OT_WARNING
5 UT_WARNING
4 UT_FAULT
3 Reserved
2 Reserved
6 Reserved
6 Fan 2 Fault
5 Fan 1 Warning
4 Fan 2 Warning
3 Fan 1 Speed Override
2 Fan 2 Speed Override
1 Air Flow Fault
5 Input A Fuse/Breaker Fault
4 Input B Fuse/Breaker Fault
3 Input A OR-ing Device Fault
2 Input B OR-ing Device Fault
1 Output OR-ing Device Fault
0 Reserved
1 Reserved
0 Reserved
0 Air Flow Warning
STATUS_CML
STATUS_FANS_3_4
7 Fan 3 Fault
6 Fan 4 Fault
5 Fan 3 Warning
4 Fan 4 Warning
3 Fan 3 Speed Override
2 Fan 4 Speed Override
1 Reserved
7 Invalid/Unsupported Command
6 Invalid/Unsupported Data
5 Packet Error Check Failed
4 Memory Fault Detected
3 Processor Fault Detected
2 Reserved
1 Other Communication Fault
0 Other Memory Or Logic Fault
0 Reserved
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 20 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
TECHNICAL NOTES (CONT.)
Parallel Load Sharing (S Option, Load Sharing)
Using Parallel Connections – Redundancy (N+1)
Two or more converters may be connected in parallel at both the input and
output terminals to support higher output current (total power, see figure 3) or
to improve reliability due to the reduced stress that results when the modules
are operating below their rated limits. For applications requiring current share,
followed the guidelines below. The products have a pre-configured volt-
age. The stated output voltage set point is at no load. The output voltage will
decrease when the load current is increased. The voltage will drop 0.35V while
load reaches max load. Our goal is to have each converter contribute nearly
identical current into the output load under all input, environmental and load
conditions.
The redundancy connections require external user supplied “OR”ing diodes or
“OR”ing MOSFETs for reliability purposes. The diodes allow for an uninterrupt-
able power system operation in case of a catastrophic failure (shorted output)
by one of the converters.
The diodes should be identical part numbers to enhance balance between
the converters. The default factory nominal voltage should be sufficiently
matched between converters. The OR’ing diode system is the responsibility of
the user. Be aware of the power levels applied to the diodes and possible heat
sink requirements.
Schottky power diodes with approximately 0.3V drops or “OR”ing MOSFETs
may be suitable in the loop whereas 0.7 V silicon power diodes may not be
advisable. In the event of an internal device fault or failure of the mains power
modules on the primary side, the other devices automatically take over the
entire supply of the loads. In the basic N+1 power system, the “N” equals the
number of modules required to fully power the system and “+1” equals one
back-up module that will take over for a failed module. If the system consists
of two power modules, each providing 50% of the total load power under
normal operation and one module fails, another one delivers full power to the
load. This means you can use smaller and less expensive power converters as
the redundant elements, while achieving the goal of increased availability.
Using Parallel Connections – Load Sharing (Power Boost)
Direct Connection Parallel Guidelines
Use a common input power source. The input voltage must be between 44V
and 60V.
+Vout and –Vout of all parallel units should be connected with a balance
output impedance; +Sense and –Sense should be connected together with
PMBus option (see figure 3).
Turn all units off before configuring the output voltage via PMBus com-
mands; all units must have the same output voltage configuration.
It is recommended to turn on one unit first and then turn other unit (s) on
after the output for the first one has settled. Turn on the next unit (s) after the
previous unit reaches its regulated output voltage for at least 10mS. Users
can use a different control signal to turn each unit on.
Thermal Shutdown
Extended operation at excessive temperature will initiate overtemperature
shutdown triggered by a temperature sensor outside the PWM controller. This
operates similarly to overcurrent and short circuit mode. The inception point
of the overtemperature condition depends on the average power delivered,
the ambient temperature and the extent of forced cooling airflow. Thermal
shutdown uses only the hiccup mode (autorestart) and PMBus configurable
hysteresis.
Users have the option to use a common primary or secondary Remote On/
Off logic control signal to turn on modules at the same time after the input
voltage rises above 44V.
Do not use PMBus to control unit On/Off when parallel operation is used.
First power up the parallel system (all converters) with a load not exceeding
the rated load of 60%*50A*UNITS_QUANTITY and allow converters to settle
(typically 10-50mS) before applying full load (90% load is recommended).
If the loads are downstream POL converters, power these up shortly after
the converter has reached steady state output. Also be aware of the delay
caused by charging up external bypass capacitors.
Start Up Considerations
When power is first applied to the DC-DC converter, there is some risk of start
up difficulties if you do not have both low AC and DC impedance and adequate
regulation of the input source. Make sure that your source supply does not allow
the instantaneous input voltage to go below the minimum voltage at all times.
Use a moderate size capacitor very close to the input terminals. You may
need two or more parallel capacitors. A larger electrolytic or ceramic cap sup-
plies the surge current and a smaller parallel low-ESR ceramic cap gives low
AC impedance.
When converters are connected in parallel, allow for a safety factor of at
least 10%. Up to 90% of max output current can be used from each module.
It is critical that the PCB layout incorporates identical connections from each
module to the load; use the same trace rating and airflow/thermal environ-
ments. If you add input filter components, use identical components and
layout.
Remember that the input current is carried both by the wiring and the
ground plane return. Make sure the ground plane uses adequate thickness
copper. Run additional bus wire if necessary.
For Power-down, do not soft-off (GUI) while in parallel operation. Power
down units by primary or secondary On/Off signal. Turn units off at the same
time or one by one to avoid the OCP being triggered.
Input Fusing
Certain applications and/or safety agencies may require fuses at the inputs of
power conversion components. Fuses should also be used when there is the
possibility of sustained input voltage reversal which is not current-limited. For
greatest safety, we recommend a fast blow fuse installed in the ungrounded
input supply line.
CAUTION: This converter is not internally fused. To avoid danger to persons
or equipment and to retain safety certification, the user must connect an
external fast-blow input fuse as listed in the specifications. Be sure that the PC
board pad area and etch size are adequate to provide enough current so that
the fuse will blow with an overload.
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 21 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
Figure 3. Load Sharing Block Diagram
Input Under-Voltage Shutdown and Start-Up Threshold
Converters will not begin to regulate properly until the rising input voltage
exceeds and remains at the Start-Up Threshold Voltage (see Specifications).
Once operating, converters will not turn off until the input voltage drops below
the Under-Voltage Shutdown Limit. Subsequent restart will not occur until the
input voltage rises again above the Start-Up Threshold. This built-in hysteresis
prevents any unstable on/off operation at a single input voltage. The over/
under-voltage fault level and fault response and hysterisis can be configured
via the PMBus interface.
For best performance, we recommend installing a low-ESR capacitor im-
mediately adjacent to the converter’s input terminals. The capacitor should be
a ceramic type such as the Murata GRM32 series or a polymer type. More input
bulk capacitance may be added in parallel (either electrolytic or tantalum) if
needed.
Recommended Output Filtering
The converter will achieve its rated output ripple and noise with no additional
external capacitor. However, the user may install more external output capaci-
tance to reduce the ripple even further or for improved dynamic response.
Again, use low-ESR ceramic (Murata GRM32 series) or polymer capacitors.
Mount these close to the converter. Measure the output ripple under your load
conditions.
Use only as much capacitance as required to achieve your ripple and noise
objectives. Excessive capacitance can make step load recovery sluggish or
possibly introduce instability. Do not exceed the maximum rated output capaci-
tance listed in the specifications.
Start-Up Time
Start-Up Time (see Specifications) is the time interval between the point when
the rising input voltage crosses the Start-Up Threshold and the output voltage
enters and remains within its specified accuracy band.
These converters include a soft start circuit to control Vout ramp time,
thereby limiting the input inrush current.
The On/Off Remote Control interval from On command to Vout (final 5%)
assumes that the converter already has its input voltage stabilized above the
Start-Up Threshold before the On command. The interval is measured from the
On command until the output enters and remains within its specified accuracy
band.
Input Ripple Current and Output Noise
All models in this converter series are tested and specified for input reflected
ripple current and output noise using designated external input/output com-
ponents, circuits and layout as shown in the figures below. The Cbus and Lbus
components simulate a typical DC voltage bus.
Recommended Input Filtering
The user must assure that the input source has low AC impedance to provide
dynamic stability and that the input supply has little or no inductive content,
including long distributed wiring to a remote power supply. The converter will
operate with no additional external capacitance if these conditions are met.
Minimum Output Loading Requirements
All models regulate within specification and are stable under no load to full
load conditions.
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 22 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
TO
CURRENT
PROBE
OSCILLOSCOPE
+Vin
-Vin
+Vout
-Vout
L
BUS
+
–
+
–
C1
C2
VIN
CBUS
CIN
RLOAD
SCOPE
C
IN = 220μF, ESR < 700mꢂ @ 100kHz
BUS = 220μF, ESR < 100mꢂ @ 100kHz
C
LBUS = 12μH
C1 = 1μF; C2 = 10μF
LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 5. Measuring Output Ripple and Noise (PARD)
Figure 4. Measuring Input Ripple Current
Thermal Shutdown (OTP, UTP)
Output Short Circuit Condition
To prevent many over temperature problems and damage, these converters
include thermal shutdown circuitry. If environmental conditions cause the
temperature of the DC-DCs to rise above the Operating Temperature Range
up to the shutdown temperature, an on-board electronic temperature sensor
will power down the unit. When the temperature decreases below the turn-on
threshold set in the command recover temp is (OT_FAULT_LIMIT-MFR_OT_
FAULT_HYS), the hysteresis is defined in general electrical specification
section. The OTP and hysteresis of the module can be reconfigured using the
PMBus. The OTP and UTP fault limit and fault response can be configured via
the PMBus.
The short circuit condition is an extension of the “Current Limiting” condition.
When the monitored peak current signal reaches a certain range, the PWM
controller’s outputs are shut off thereby turning the converter “off.” This is
followed by an extended time out period. This period can vary depending on
other conditions such as the input voltage level. Following this time out period,
the PWM controller will attempt to re-start the converter by initiating a “normal
start cycle” which includes softstart. If the “fault condition” persists, another
“hiccup” cycle is initiated. This “cycle” can and will continue indefinitely until
such time as the “fault condition” is removed, at which time the converter will
resume “normal operation.” Operating in the “hiccup” mode during a fault
condition is advantageous in that average input and output power levels are
held low preventing excessive internal increases in temperature.
CAUTION: If you operate too close to the thermal limits, the converter may
shut down suddenly without warning. Be sure to thoroughly test your applica-
tion to avoid unplanned thermal shutdown.
Remote On/Off Control
Temperature Derating Curves
The DRQ series modules are equipped with both primary (On/Off 1, enabled,
pull up internal) and secondary (On/Off 2, disabled, pull up internal) control pins
for increased system flexibility. Both are configurable via PMBus. The On/Off
pins are TTL open-collector and/or CMOS open-drain compatible. (See general
specifications for threshold voltage levels. See also MFR_PRIMARY_ON_OFF_
CONFIG section.)
Negative-logic models are on (enabled) when the On/Off is grounded or
brought to within a low voltage (see specifications) with respect to –Vin.
The device is off (disabled) when the On/Off is left open or is pulled high to
+13.5Vdc with respect to –Vin. The On/Off function allows the module to be
turned on/off by an external device switch.
Positive-logic models are enabled when the On/Off pin is left open or is
pulled high to +13.5V with respect to –Vin. Positive-logic devices are disabled
when the On/Off is grounded or brought to within a low voltage (see specifica-
tions) with respect to –Vin. For voltage levels for On/Off 2 signal see functional
specifications.
The graphs in this data sheet illustrate typical operation under a variety of
conditions. The Derating curves show the maximum continuous ambient air
temperature and decreasing maximum output current which is acceptable
under increasing forced airflow measured in Linear Feet per Minute (“LFM”).
Note that these are AVERAGE measurements. The converter will accept brief
increases in current or reduced airflow as long as the average is not exceeded.
Note that the temperatures are of the ambient airflow, not the converter
itself which is obviously running at higher temperature than the outside air.
Also note that “natural convection” is defined as very flow rates which are not
using fan-forced airflow. Depending on the application, “natural convection” is
usually about 30-65 LFM but is not equal to still air (0 LFM).
Murata Power Solutions makes Characterization measurements in a closed
cycle wind tunnel with calibrated airflow. We use both thermocouples and an
infrared camera system to observe thermal performance. As a practical matter,
it is quite difficult to insert an anemometer to precisely measure airflow in
most applications. Sometimes it is possible to estimate the effective airflow if
you thoroughly understand the enclosure geometry, entry/exit orifice areas and
the fan flowrate specifications.
The restart delay for this module to turn On/Off by the On/Off control pin is
100ms.
On/Off 1 or 2 Control status
CAUTION: If you exceed these Derating guidelines, the converter may have
an unplanned Over Temperature shut down. Also, these graphs are all collected
near Sea Level altitude. Be sure to reduce the derating for higher altitude.
Not ignored
Ignored
On/Off 1 or 2 pin
OPEN
PULL HIGH
PULL LOW
P LOGIC
ON
ON
N LOGIC
OFF
OFF
ON
P LOGIC
ON
ON
N LOGIC
ON
ON
OFF
ON
ON
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MDC_DRQ-12/50-L48NK.B02 Page 23 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
On/Off 1 can be configured by PMBus command MFR_PRIMARY_ON_OFF_
CONFIG (DDh); default configuration is not ignored; required On/Off 1 control
pin to be asserted to start the unit.
On/Off 2 can be configured by PMBUS command ON_OFF_CONFIG (02h);
default configuration is ignored; treat it as always ON.
DRQ's On/Off status is dependent on On/Off 1 control, On/Off 2 control, and
OPERATION (PMBus command) status; all three must be ON to turn DRQ on; if
one of them is OFF, unit will be turned off.
This is done by correcting IR voltage drops along the output wiring and the
current carrying capacity of PC board etch. This output drop (the difference
between Sense and Vout when measured at the converter) should not exceed
0.5V. Consider using heavier wire if this drop is excessive. Sense inputs also
improve the stability of the converter and load system by optimizing the control
loop phase margin.
Note: The Sense input and power Vout lines are internally connected through
low value resistors to their respective polarities so that the converter can
operate without external connection to the Sense. Nevertheless, if the Sense
function is not used for remote regulation, the user should connect +Sense to
+Vout and –Sense to –Vout at the converter pins.
The remote Sense lines carry very little current. They are also capacitively
coupled to the output lines and therefore are in the feedback control loop to
regulate and stabilize the output. As such, they are not low impedance inputs
and must be treated with care in PC board layouts. Sense lines on the PCB
should run adjacent to DC signals, preferably Ground. In cables and discrete
wiring, use twisted pair, shielded tubing or similar techniques.
Any long, distributed wiring and/or significant inductance introduced into the
Sense control loop can adversely affect overall system stability. If in doubt, test
your applications by observing the converter’s output transient response during
step loads. There should not be any appreciable ringing or oscillation. You
may also adjust the output trim slightly to compensate for voltage loss in any
external filter elements. Do not exceed maximum power ratings.
Please observe Sense inputs tolerance to avoid improper operation:
[Vout(+) −Vout(-)] − [Sense(+) −Sense(-)] ≤ 10% of Vout
Output Capacitive Load
These converters do not require external capacitance added to achieve rated
specifications. Users should only consider adding capacitance to reduce
switching noise and/or to handle spike current load steps. Install only enough
capacitance to achieve noise objectives. Excess external capacitance may
cause degraded transient response and possible oscillation or instability.
Remote Sense Input
Use the Sense inputs with caution. Sense is normally connected at the load.
Sense inputs compensate for output voltage inaccuracy delivered at the load.
Contact and PCB resistance
losses due to IR drops
+VOUT
−VIN
IOUT
+SENSE
Sense Current
Output overvoltage protection is monitored at the output voltage pin, not the
Sense pin. Therefore excessive voltage differences between Vout and Sense
together with trim adjustment of the output can cause the overvoltage protec-
tion circuit to activate and shut down the output.
Power derating of the converter is based on the combination of maximum
output current and the highest output voltage. Therefore the designer must
ensure:
ON/OFF
CONTROL
LOAD
Sense Return
IOUT Return
−
SENSE
+VIN
-VOUT
(Vout at pins) x (Iout) ≤ (Max. rated output power)
Contact and PCB resistance
losses due to IR drops
Figure 6. Remote Sense Circuit Configuration
Soldering Guidelines
Murata Power Solutions recommends the specifications below when installing these
converters. These specifications vary depending on the solder type. Exceeding these
specifications may cause damage to the product. Be cautious when there is high atmo-
spheric humidity. We strongly recommend a mild pre-bake (100° C. for 30 minutes). Your
production environment may differ; therefore please thoroughly review these guidelines
with your process engineers.
Wave Solder Operations for through-hole mounted products (THMT)
For Sn/Ag/Cu based solders:
Maximum Preheat Temperature
Maximum Pot Temperature
Maximum Solder Dwell Time
For Sn/Pb based solders:
Maximum Preheat Temperature
Maximum Pot Temperature
Maximum Solder Dwell Time
115° C.
270° C.
7 seconds
105° C.
250° C.
6 seconds
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 24 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
[3] Conducted Emissions Test Results
Emissions Performance
Murata Power Solutions measures its products for conducted emissions
against the EN 55022 and CISPR 22 standards. Passive resistance loads are
employed and the output is set to the maximum voltage. If you set up your
own emissions testing, make sure the output load is rated at continuous power
while doing the tests.
The recommended external input and output capacitors (if required) are
included. Please refer to the fundamental switching frequency. All of this
information is listed in the Product Specifications. An external discrete filter is
installed and the circuit diagram is shown below.
VCC
RTN
L1
L2
+
+
C1 C2 C3
C4 C5
LOAD
C6 C7
C12
DC/DC
-48V
GND
C8 C9 C10 C11
GND
Figure 7. Conducted Emissions Test Circuit
Graph 1. Conducted emissions performance, Positive Line,
CISPR 22, Class B, full load
[1] Conducted Emissions Parts List
Reference
Part Number
Description
SMD CERAMIC-100V-
1000nF-X7R-1210
SMD CERAMIC100V-100nF-
10%-X7R-1206
Vendor
C1, C2, C3, C4, C5 GRM32ER72A105KA01L
Murata
C6
GRM319R72A104KA01D
PG0060T
Murata
Pulse
COMMON MODE-473uH-
25%-14A
L1, L2
SMD CERAMIC630V-0.22uF-
10%-X7R-2220
C8, C9, C10, C11 GRM55DR72J224KW01L
Murata
Aluminum100V-220Uf-
10%-long lead
C7
UHE2A221MHD
NA
Nichicon
C12
[2] Conducted Emissions Test Equipment Used
Hewlett Packard HP8594L Spectrum Analyzer – S/N 3827A00153
2Line V-networks LS1-15V 50Ω/50Uh Line Impedance Stabilization Network
Graph 2. Conducted emissions performance, Negative Line,
CISPR 22, Class B, full load
[4] Layout Recommendations
Most applications can use the filtering which is already installed inside the
converter or with the addition of the recommended external capacitors. For
greater emissions suppression, consider additional filter components and/or
shielding. Emissions performance will depend on the user’s PC board layout,
the chassis shielding environment and choice of external components. Please
refer to Application Note GEAN-02 for further discussion.
Since many factors affect both the amplitude and spectra of emissions, we
recommend using an engineer who is experienced at emissions suppression.
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 25 of 26
DRQ-12/50-L48 Series
600W Digital Fully Regulated
Intermediate DC-DC Bus Converter
Vertical Wind Tunnel
Murata Power Solutions employs a computer controlled
custom-designed closed loop vertical wind tunnel, infrared
video camera system, and test instrumentation for accurate
airflow and heat dissipation analysis of power products.
The system includes a precision low flow-rate anemometer,
variable speed fan, power supply input and load controls,
temperature gauges, and adjustable heating element.
The IR camera monitors the thermal performance of the
Unit Under Test (UUT) under static steady-state conditions. A
special optical port is used which is transparent to infrared
wavelengths.
IR Transparent
optical window
Variable
speed fan
Unit under
test (UUT)
IR Video
Camera
Both through-hole and surface mount converters are
soldered down to a 10"x10" host carrier board for realistic
heat absorption and spreading. Both longitudinal and trans-
verse airflow studies are possible by rotation of this carrier
board since there are often significant differences in the heat
dissipation in the two airflow directions. The combination of
adjustable airflow, adjustable ambient heat, and adjustable
Input/Output currents and voltages mean that a very wide
range of measurement conditions can be studied.
The collimator reduces the amount of turbulence adjacent
to the UUT by minimizing airflow turbulence. Such turbu-
lence influences the effective heat transfer characteristics
and gives false readings. Excess turbulence removes more
heat from some surfaces and less heat from others, possibly
causing uneven overheating.
Heating
element
Precision
low-rate
anemometer
3” below UUT
Ambient
temperature
sensor
Both sides of the UUT are studied since there are differ-
ent thermal gradients on each side. The adjustable heating
element and fan, built-in temperature gauges, and no-contact
IR camera mean that power supplies are tested in real-world
conditions.
Airflow
collimator
Figure 8. Vertical Wind Tunnel
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2016 Murata Power Solutions, Inc.
www.murata-ps.com/support
MDC_DRQ-12/50-L48NK.B02 Page 26 of 26
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