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DWR-5/2.65-3.3/3-D24-C

型号：

DWR-5/2.65-3.3/3-D24-C

品牌：

MURATA[ muRata ]

页数：

9 页

PDF大小：

337 K

下载PDF手册
DSM/DWR Models  
s
Dual Output, 3.3V and 5V, 15Watt DC/DC Converters  
FEATURES  
  
Regulated 5V and 3.3V outputs  
  
5V @ 2.65Amps/3.3V @ 3 Amps capability  
Typical units  
  
15 Watts total output power  
  
1" x 2" SMT or through-hole package  
  
Available input voltage ranges:  
10-18V, 18-36V or 36-75V  
  
No-load stable operation  
  
UL/EN60950-1 safety approvals  
PRODUCT OVERVIEW  
  
mark available (75V-input models)  
For surface mount or through-hole applications requiring 15 Watts of power from 5V and 3.3V, DATEL  
offers a new power sharing DC/DC converter capable of meeting your output current requirements. The  
DSM/DWR series is available with three different input voltage ranges: 36-75V input (D48), 18-36V input  
(D24) or 10-18V input (D12). These converters are fully isolated and capable of delivering any combina-  
tion of 5V and 3.3V output current up to a combined total of 15 Watts of output power.  
Housed in 1" x 2" metal packages coated with electrically non-conductive finish, DSM/DWR convert-  
ers are regulated by a 3.3V control loop that provides load regulation of 0.5ꢀ for 3.3V output and  
1.5ꢀ for 5V output.  
  
Continuous short-circuit protection  
  
Fully isolated, 1500Vdc guaranteed  
  
–40 to +100°C operating temperature  
  
Input under and overvoltage shutdown  
  
Output OVP, thermal shutdown  
All models include input filtering, input overvoltage and undervoltage shutdown circuitry, output short-  
circuit and current-limiting protection, and thermal shutdown. All models provide trim capability and an  
on/off control function. Fully synchronous output rectification provides high efficiency (86ꢀ) and a stable  
output under no-load conditions.  
DSM/DWR power sharing modules offer low output ripple and noise performance, 1500 Vdc isolation  
voltage, and are fully specified for –40 to +100°C operation. These devices meet IEC950, UL1950 and  
EN60950-1 safety standards. "D48" models are CE marked (meets LVD requirements).  
SIMPLIFIED SCHEMATIC  
+5V OUTPUT  
(5)  
+INPUT  
(1)  
SWITCH  
CONTROL  
+3.3V OUTPUT  
(8)  
–INPUT  
(2)  
OUTPUT  
RETURN  
(7)  
ON/OFF  
CONTROL  
(3)  
PWM  
CONTROLLER  
OPTO  
ISOLATION  
REFERENCE &  
ERROR AMP  
UV & OV  
COMPARATORS  
THERMAL  
SHUTDOWN  
TRIM  
(9)  
Figure 1. Simplified Schematic  
Typical topology is shown.  
For full details go to  
www.murata-ps.com/rohs  
www.murata-ps.com/support  
MDC_DSM/DWR Models.D02 Page 1 of 9  
DSM/DWR Models  
Dual Output, 3.3V and 5V, 15Watt DC/DC Converters  
Performance Specifications and Ordering Guide➀  
Output  
Input  
Package  
(Case,  
Pinout)  
➂
R/N (mVp-p)  
Regulation (Max.)  
Efficiency  
VOUT  
(Volts)  
IOUT ➁  
(Amps)  
VIN Nom.  
(Volts)  
Range  
(Volts)  
IIN ➄  
(mA)  
Model  
Typ.  
40  
Max.  
75  
Line  
1%  
Load ➃  
1.5%  
0.5%  
1.5%  
0.5%  
1.5%  
0.5%  
Min.  
Typ.  
5
3.3  
5
2.65  
3
DSM-5/2.65-3.3/3-D12-C  
DWR-5/2.65-3.3/3-D12-C  
C18A, P36  
C34, P36  
12  
24  
48  
10-18  
18-36  
36-75  
60/1450  
35/730  
20/370  
83%  
83%  
83%  
86%  
60  
100  
75  
0.5%  
1%  
2.65  
3
40  
DSM-5/2.65-3.3/3-D24-C  
DWR-5/2.65-3.3/3-D24-C  
C18A, P36  
C34, P36  
85%  
85%  
To Be Discontinued*  
3.3  
5
60  
100  
75  
0.5%  
1%  
2.65  
3
40  
DSM-5/2.65-3.3/3-D48-C  
DWR-5/2.65-3.3/3-D48-C  
C18A, P36  
C34, P36  
3.3  
60  
100  
0.5%  
➃ Tested from 250mA to 100% full load (other output at 250mA load).  
➄ Nominal line voltage, no load/balanced full-power condition.  
➀ Typical at TA = +25°C under nominal line voltage and balanced "full-load" conditions (5V @ 1.5A/3.3V @ 2.25A).  
➁ Any combination of 5V/3.3V rated IOUT current, not to exceed 15 Watts of output power. (See derating graphs.)  
➂ Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specified with 0.47µF ceramic  
in parallel with 100µF tantalum output capacitors.  
*LAST TIME BUY: APRIL 1, 2018. CLICK HERE FOR DISCONTINUANCE NOTICES.  
PART NUMBER STRUCTURE  
DSM - 5 / 2.65 - 3.3 / 3 - D48 LX  
- C  
Optional Functions  
Dual Output:  
RoHS-6 compliant  
DSM/DWR 15 Watt DC/DC's are designed with an On/Off Control  
DSM: Surface-Mount Series➁  
(Selective soldering only)  
DWR:Through-Hole Series  
function, with positive polarity in the pin 3 position.  
DWR➀  
Blank = On/Off Control function (positive polarity) on pminod3els only  
See Optional Functions  
Input Voltage Range:  
D12 = 10-18 Volts (12V nominal)  
D24 = 18-36 Volts (24V nominal)  
D48 = 36-75 Volts (48V nominal)  
}
L1 = Pin length: 0.110 inches (2.79mm) 0.010  
L2 = Pin length: 0.145 inches (3.68mm) 0.010  
V1 Nominal Output Voltage:  
5 Volts  
I1 Maximum Output Current:  
2.65 Amps  
➀
Special quantity order is required; samples available with  
standard pin length only.  
SMT (M) versions not available in sample quantities.  
Some model number combinations may not be available. See  
website or contact your local Murata sales representative.  
I2 Maximum Output Current:  
3 Amps  
V2 Nominal Output Voltage:  
3.3 Volts  
➁
➂
MECHANICAL SPECIFICATIONS  
I/O Connections  
Pin Function P36  
1
2
3
4
5
6
7
8
9
+Input  
–Input  
On/Off Control  
Case  
0.100  
(2.54)  
0.110  
(2.79)  
2.00 0.03  
(50.80)  
+5V Output  
NC  
4
9
8
7
6
5
Case C34  
METAL CASE  
0.45  
(11.43)  
0.800  
(20.32)  
4 EQ. SP. @  
0.200 (5.08)  
DWR Models  
3
2
Output Return  
+3.3V Output  
Trim  
Case C18A  
1.00 0.03  
(25.40)  
0.500  
(12.70)  
DSM Models  
INSULATED PAD  
0.300  
(7.62)  
0.040 0.001 DIA.  
(1.016 0.025)  
1
0.20 MIN  
(5.08)  
TOP VIEW  
Dimensions are in inches (mm) shown for ref. only.  
1.800  
(45.72)  
0.10  
(2.54)  
0.10  
(2.54)  
Third Angle Projection  
2.00 0.03  
(50.80)  
1
5
6
7
8
9
0.110  
(2.79)  
0.300  
(7.62)  
0.200  
(5.08)  
2
3
0.800 (20.32)  
4 EQ. SP. @  
0.200 (10.16)  
1.00 0.03  
(25.40)  
0.015  
(0.38)  
0.060  
(1.52)  
0.52  
(13.21)  
Tolerances (unless otherwise specified):  
.XX 0.02 (0.5)  
4
.XXX 0.010 (0.25)  
Angles 2ꢁ  
INSULATED BASE  
METAL CASE  
BOTTOM VIEW  
0.015  
(0.38)  
0.055  
(1.40)  
0.10  
(2.54)  
Components are shown for reference only.  
www.murata-ps.com/support  
MDC_DSM/DWR Models.D02 Page 2 of 9  
DSM/DWR Models  
Dual Output, 3.3V and 5V, 15Watt DC/DC Converters  
Performance/Functional Specifications  
Typical @ TA = +25°C under nominal line voltage, balanced "full-load" conditions, unless noted. ➀  
Input  
Output (continued)  
Input Voltage Range:  
Short Circuit Current:  
5V Output  
3.3V Output  
D12 Models  
D24 Models  
D48 Models  
10-18 Volts (12V nominal)  
18-36 Volts (24V nominal)  
36-75 Volts (48V nominal)  
5.5 Amps average, continuous current  
3 Amps average, continuous current  
Maximum Capacitive Loading  
Temperature Coefficient  
330µF per output  
0.02% per °C  
Overvoltage Shutdown:  
D12 Models  
D24 Models  
18.5-21 Volts (19V typical)  
37-40 Volts (38.5V typical)  
77-81 Volts (79.5V typical)  
Dynamic Characteristics  
D48 Models  
Dynamic Load Response: ➁  
5V (50-100% step to 98% VOUT)  
3.3V (50-100% step to 98.5% VOUT)  
200µsec maximum (3.3V @ 0.25A)  
200µsec maximum (5V @ 0.25A)  
Start-Up Threshold:  
D12 Models  
D24 Models  
9.4-10 Volts (9.6V typical)  
16.5-18 Volts (17V typical)  
34-36 Volts (35V typical)  
Start-Up Time:  
VIN to VOUT  
On/Off to VOUT  
D48 Models  
10msec  
10msec  
Undervoltage Shutdown:  
D12 Models  
D24 Models  
7.0-8.5 Volts (8V typical)  
15.5-17.5 Volts (16.5V typical)  
32.5-35.5 Volts (33.5V typical)  
Switching Frequency  
260kHz ( 25kHz)  
Environmental  
D48 Models  
MTBF: ➅  
D12 Models  
D24 Models  
D48 Models  
Input Current:  
TBD hours  
2.1 million hours  
2.4 million hours  
Normal Operating Conditions  
Standby Mode:  
Off, OV, UV, Thermal Shutdown  
See Ordering Guide  
10mA  
Operating Temperature: (Ambient): ➁  
Without Derating:  
With Derating  
Input Reflected Ripple Current ➇  
10mAp-p  
–40 to +60°C  
To +100°C (See Derating Curves)  
Internal Input Filter: Capacitive  
D12 Models  
D24 Models  
10µF  
3.3µF  
1.5µF  
Case Temperature:  
Maximum Operational  
For Thermal Shutdown  
+100°C  
101°C minimum, 115°C maximum  
D48 Models  
Reverse-Polarity Protection:  
D12 Models  
D24 Models  
Storage Temperature  
–40 to +120°C  
1 minute duration, 3A maximum  
1 minute duration, 2A maximum  
1 minute duration, 1A maximum  
Physical  
D48 Models  
Dimensions  
See Mechanical Specifications  
Case connection via pin 4  
On/Off Control: (Pin 3): ➂ ➄  
On = open or to +15V,  
IIN @ 13V = 800µA  
Off = 0 to 0.8V, IIN @ 0V = 2mA  
Internal Case Connection  
Case Material  
Corrosion resistant steel with  
non-conductive, epoxy-based, black  
enamel finish and plastic baseplate  
Output  
VOUT Accuracy:  
5V Output  
3.3V Output  
Pin Material  
Weight  
Gold-plate copper alloy pins or tin-plate  
copper alloy SMT contacts  
2.5% maximum  
1.5% maximum  
1.6 ounces (46 grams)  
Minimum Loading Per Specification ➆ 250mA  
Primary to Secondary Insulation Level Operational  
Minimum Load For Stability  
Ripple/Noise (20MHz BW) ➃  
Line/Load Regulation  
Efficiency  
No load  
See Ordering Guide  
See Ordering Guide  
See Ordering Guide / Efficiency Curves  
➀ Balanced "full-load" is 5V @ 1.5A/3.3V @ 2.25A. All models are specified with external  
0.47µF ceramic and 100µF tantalum output capacitors.  
➁ See Technical Notes/Graphs for details.  
Cross Regulation:  
5V Output  
➂ Applying a voltage to On/Off Control (pin 3) when no input power is applied to the  
converter can cause permanent damage.  
(5V@1.5A, 3.3V@0.25-2.25A)  
3.3V Output  
(3.3V@2.25A, 5V@0.25-1.5A)  
2%  
➃ Output noise may be further reduced with the installation of additional external output  
capacitors. See Technical Notes.  
0.5%  
5%  
➄ On/Off control is designed to be driven with open collector or by appropriate voltage  
levels. Voltages must be referenced to the –Input (Pin 2).  
Trim Range ➁  
➅ Demonstrated MTBF available on request.  
Isolation Voltage:  
Input-to-Output  
Input-to-Case  
➆ For conditions with less than minimum loading, outputs remain stable. However, regulation  
performance will degrade.  
1500Vdc minimum  
1000Vdc minimum  
1000Vdc minimum  
➇ Input Ripple Current is tested/specified over a 5-20MHz bandwidth with an external 22µF  
input capacitor and a simulated source impedance of 220µF and 12µH. See I/O Filtering,  
Input Ripple Current and Output Noise for details.  
Output-to-Case  
Isolation Capacitance  
Isolation Resistance  
560pF  
100MΩ  
Current Limit Inception:  
5V @ 95% VOUT (3.3V @ 0.25A)  
3.3V @ 97% VOUT (5V @ 0.25A)  
3.3-4 Amps  
4.7-5.7 Amps  
www.murata-ps.com/support  
MDC_DSM/DWR Models.D02 Page 3 of 9  
DSM/DWR Models  
Dual Output, 3.3V and 5V, 15Watt DC/DC Converters  
Absolute Maximum Ratings  
D48 models). Once operating, devices will not turn off until the input voltage  
drops below the Undervoltage Shutdown limit (34V for D48 models). Subse-  
quent re-start will not occur until the input is brought back up to the Start-Up  
Threshold. This built in hysteresis prevents any unstable on/off situations from  
occurring at a single input voltage.  
Input Voltage:  
Continuous:  
D12 Models  
D24 Models  
D48 Models  
21 Volts  
40 Volts  
81 Volts  
25 Volts  
50 Volts  
100 Volts  
Transient (100msec): D12 Models  
D24 Models  
D48 Models  
Input voltages exceeding the input overvoltage shutdown specification listed  
in the Performance/Functional Specifications will cause the device to shut-  
down. A built-in hysteresis of 0.6 to 1.6 Volts for all models will not allow the  
converter to restart until the input voltage is sufficiently reduced.  
Input Reverse-Polarity Protection: ➁ Input Current must be limited. 1 minute  
duration. Fusing recommended.  
D12 Models  
D24 Models  
D48 Models  
3 Amps  
2 Amps  
1 Amps  
Start-Up Time  
Output Current ➁  
Current limited. Devices can withstand  
an indefinite output short circuit.  
The VIN to VOUT start-up time is the interval of time where the input voltage  
crosses the turn-on threshold point, and the fully loaded output voltage enters  
and remains within its specified accuracy band. Actual measured times will  
vary with input source impedance, external input/output capacitance, and  
the slew rate of the input voltages. The XWR 15 Watt Series implements a  
soft start circuit that limits the duty cycle of the PWM controller at power up,  
thereby limiting the Input Inrush current.  
On/Off Control (Pin 3) Max. Voltages:  
Referenced to –Input (pin 2)  
+15V  
Storage Temperature  
–40 to +120°C  
Lead Temperature (Soldering, 10 sec.) +300°C  
These 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, nor recommended.  
The On/Off Control to VOUT start-up time assumes the converter has its  
nominal input voltage applied but is turned off via the On/Off Control pin. The  
specification defines the interval between the time at which the converter is  
turned on and the fully loaded output voltage enters and remains within its  
specified accuracy band. Similar to the VIN to VOUT start-up, the On/Off Control  
to VOUT start-up time is also governed by the internal soft start circuitry and  
external load capacitance.  
TECHNICAL NOTES  
Isolation / Case Connection  
The XWR Series’ 5V and 3.3V outputs (pins 5 & 8) with its common return (pin  
7) are isolated from the +VIN and –VIN inputs (pins 1 & 2) via a transformer  
and an opto-coupled transistor.  
On/Off Control  
The On/Off Control (pin 3) may be used for remote on/off operation. As shown  
in Figure 1, the control pin is referenced to the –Input (pin 2) and will be inter-  
nally pulled to a high state. The XWR Series is designed so that it is enabled  
when the control pin is left open (pulled high) and disabled when the control  
pin is pulled low (less than +0.8V relative to –Input).  
The DC/DC converter’s case is internally connected to pin 4. This allows  
circuit specific grounding of the case on either the input or the output side, or  
leaving the case disconnected, i.e. “floating.”  
Input Fusing  
Certain applications and/or safety agencies may require the installation of  
fuses at the inputs of power conversion components. Fuses should also be  
used if the possibility of a sustained, non-current-limited, input-voltage polar-  
ity reversal exists. For XWR 15 Watt Series Converters, it is recommended to  
install slow blow fuses with values no greater than the following, in the +Input  
line.  
Dynamic control of the on/off function is best accomplished with a mechani-  
cal relay or an open-collector/open-drain circuit (optically isolated if appropri-  
ate). The drive circuit should be able to sink approximately 1 mA for logic low.  
The on/off control function is designed such that the converter can be  
disabled while the input power is ramping up, and then “released” once the  
input has stabilized.  
VIN Range  
D12 Models  
D24 Models  
D48 Models  
Fuse Value  
3 Amps  
2 Amps  
+Vcc  
1 Amps  
13V CIRCUIT  
Input Reverse-Polarity Protection  
3
ON/OFF  
CONTROL  
Upon applying a reverse-polarity voltage to the DC/DC converter, an internal  
diode will be forward biased, drawing excessive current from the power  
source. Therefore, it is required that the input current be limited by either an  
appropriately rated input fuse or a current limited power source.  
5V CIRCUIT  
–INPUT  
2
Input Overvoltage/Undervoltage Shutdown and Start-Up Threshold  
Under normal start-up conditions, devices will not begin to regulate until the  
ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for  
Figure 2. Internal On/Off Control circuitry  
www.murata-ps.com/support  
MDC_DSM/DWR Models.D02 Page 4 of 9  
DSM/DWR Models  
Dual Output, 3.3V and 5V, 15Watt DC/DC Converters  
Trimming Output Voltages  
5V & 3.3V Regulation  
The XWR Series converters are designed such that both the 5V and 3.3V out-  
puts share a common regulation feedback control loop. Though the feedback  
loop is influenced by both outputs, the 3.3 Volt output is dominant. As a result,  
the 3.3 Volt regulation (0.5ꢀ) is superior to the 5 Volt regulation (1.5ꢀ).  
The DSM/DWR converters have a trim capability (pin 9) that allow users  
to adjust the output voltages 5ꢀ. A trim adjustment will cause an equal  
percentage of change in both outputs. Adjustments to the output voltages can  
be accomplished via a trim pot, Figure 3, or a single fixed resistor as shown  
in Figures 4 and 5. A single fixed resistor can increase or decrease the output  
voltage depending on its connection. Fixed resistors should have absolute TCR's  
less than 100ppm/°C to minimize sensitivity to changes in temperature.  
The converters are specified for load regulation of minimum (250mA) to 100ꢀ  
loading. All models are stable under no-load conditions, but operation below  
minimum load mandates an increase in the regulation tolerance of 0.5ꢀ for  
3.3 Volt output and an increase of 1ꢀ for the 5 Volt output. A slight increase  
in switching noise may also be observed for operation below minimum load-  
ing. Operation with a full load on 3.3 Volt output and light to no load on 5 Volt  
output is the most demanding for +5V regulation.  
A single resistor connected from the Trim pin (pin 9) to the +3.3V Output (pin 8),  
see Figure 4, will decrease the output voltages. A resistor connected from the  
Trim pin (pin 9) to Output Return (pin 7) will increase the output voltages.  
Trim adjustments greater than 5ꢀ can have an adverse effect on the con-  
verter's performance and is not recommended.  
Filtering and Noise Reduction  
The XWR Series Converters achieve their rated ripple and noise specifica-  
tions with the use of 0.47µF ceramic in parallel with 100µF tantalum output  
capacitors. In critical applications, input/output noise may be further reduced  
by installing additional external I/O capacitors. Input capacitors should be  
selected for bulk capacitance, low ESR and high rms-ripple-current ratings.  
Output capacitors should be selected for low ESR and appropriate frequency  
response. All caps should have appropriate voltage ratings and be located as  
close to the converter as possible.  
5
1
2
+5V OUTPUT  
+INPUT  
–INPUT  
+5V LOAD  
7
OUTPUT  
RETURN  
20kΩ  
5-22  
Turns  
3
4
ON/OFF  
CONTROL  
+3.3V LOAD  
8
9
+3.3V OUTPUT  
TRIM  
CASE  
Thermal Shutdown  
Figure 3.Trim Connections Using A Trimpot  
These XWR converters are equipped with Thermal Shutdown Circuitry. If  
the internal temperature of the DC/DC converter rises above the designed  
operating temperature, a precision temperature sensor will power down the  
unit. When the internal temperature decreases below the threshold of the  
temperature sensor, the units will self start.  
5
1
2
+5V OUTPUT  
+INPUT  
+5V LOAD  
7
OUTPUT  
RETURN  
–INPUT  
3
4
ON/OFF  
CONTROL  
+3.3V LOAD  
Current Limiting  
8
9
+3.3V OUTPUT  
TRIM  
CASE  
When power demands from either output fall within 120ꢀ to 190ꢀ of the  
rated output current, the DC/DC converter will go into a current limiting mode.  
In this condition, both output voltages will decrease proportionately with  
increases in output current, thereby maintaining a somewhat constant power  
dissipation.  
R TRIM  
DOWN  
2.49(VO – 1.234)  
3.3 – VO  
–14  
RTDOWN (kΩ) =  
Figure 4. Decrease Output Voltage Trim Connections  
Using A Fixed Resistor  
This is commonly referred to as power limiting. Current limit inception is  
defined as the point where the full-power output voltage falls below the  
specified tolerance. If the load current being drawn from the converter is  
significant enough, the unit will go into a short circuit condition. See “Short  
Circuit Condition.”  
5
1
2
+5V OUTPUT  
+INPUT  
–INPUT  
+5V LOAD  
7
OUTPUT  
RETURN  
Short Circuit Condition  
3
4
ON/OFF  
CONTROL  
+3.3V LOAD  
When a converter is in current limit mode the output voltages will drop as  
the output current demand increases. If the output voltage drops too low, the  
magnetically coupled voltage used to develop primary side voltages will also  
drop, thereby shutting down the PWM controller.  
8
9
+3.3V OUTPUT  
TRIM  
CASE  
R TRIM  
UP  
3.073  
Following a time-out period of 5 to 15 milliseconds, the PWM will restart,  
causing the output voltages to begin ramping to their appropriate values. If  
the short-circuit condition persists, another shutdown cycle will be initi-  
ated. This on/off cycling is referred to as “hiccup” mode. The hiccup cycling  
reduces the average output current, thereby preventing internal temperatures  
from rising to excessive levels. The modules are capable of enduring an  
indefinite short circuit output condition.  
–14  
RTUP (kΩ) =  
VO – 3.3  
Figure 5. Increase Output Voltage Trim Connections  
Using A Fixed Resistor  
Accuracy of adjustment is subject to tolerances or resistor values and factory-  
adjusted output accuracy. VO = desired output voltage.  
www.murata-ps.com/support  
MDC_DSM/DWR Models.D02 Page 5 of 9  
DSM/DWR Models  
Dual Output, 3.3V and 5V, 15Watt DC/DC Converters  
SMT Solder Process for DSM models  
Recommended PC Board Layout  
A single pc board layout could accommodate both the through-hole and the  
SMT models of the XWR Series as per the figure below. Note that on page 2  
of this data sheet, the DWR through-whole package is drawn with a bottom  
view of its pin locations, and the DSM surface-mount package is drawn with  
a top view of its pin locations. As shown, the through-hole pin locations, when  
viewed from the top, fall just aside (on 1.8 inch centers) the SMT pin loca-  
tions, which essentially begin on 2.1 inch centers.  
For the surface-mount DSM models of the XWR Series, the packages’ gull-  
wing leads are made of tin-plated (150 micro inches) copper. The gull-wing  
configuration, as opposed to “J” leads, was selected to keep the solder joints  
out from under the package to minimize both, heat conduction away from the  
leads (into the encapsulated package) and shadowing effects.  
DSM modules do not currently withstand the standard solder-reflow process  
with its most common temperature profiles. In order to avoid damage to the  
converter a selective solder process with the following parameters must  
therefore be chosen (i.e. hot air gun or a hand soldering method):  
The layout shows +Input and Case grounded on the primary side. Applica-  
tion dependant the primary ground could of course also be connected to  
-Input and Case. Creepage and clearance distances between input and output  
should comply with all relevant safety regulations.  
Pre-heat phase 30-60°C rise/minute to 150°C maximum.  
Lead temperature 300°C for 10 seconds maximum.  
2.00 (50.80)  
A
As shown in Figure 7, our tests have determined the optimal landing-pad size  
to be 160 mils by 130 mils (4 x 3.3 mm).  
1.800 (45.72)  
A
4
9
8
7
6
5
0.300  
(7.62)  
3
2
1.00  
(25.40)  
Case C34  
0.200  
(5.08)  
1
TOP VIEW  
0.800 (20.32)  
4 EQ. SP. @  
0.200 (10.16)  
PIN LENGTH: 0.20 MIN (5.08)  
PIN DIAMETER: 0.040 0.001 (1.016 0.025)  
CASE  
TRIM  
+3.3V OUTPUT  
OUTPUT RETURN  
ON/OFF CONTROL  
–INPUT  
N.C.  
+5V OUTPUT  
+INPUT  
POWER GROUND  
0.015  
(0.38)  
0.100  
(2.54)  
0.110  
(2.79)  
4
9
8
7
6
5
0.800  
3
2
(20.32)  
1.00  
Case C18A  
4 EQ. SP. @  
0.200 (5.08)  
(25.40)  
0.500  
(12.70)  
0.110**  
(2.79)  
0.300  
(7.62)  
0.100**  
(2.54)  
0.130*  
(3.30)  
1
0.160*  
(4.06)  
TOP VIEW  
0.10  
(2.54)  
* PAD DIMENSION  
** LEAD DIMENSION  
I/O Connections  
Pin Function P36  
1
2
3
4
5
6
7
8
9
+Input  
–Input  
Figure 7 . PC Board Land Pattern  
On/Off Control  
Case  
+5V Output  
NC  
Output Return  
+3.3V Output  
Trim  
Figure 6. Recommended Board Layout  
www.murata-ps.com/support  
MDC_DSM/DWR Models.D02 Page 6 of 9  
DSM/DWR Models  
Dual Output, 3.3V and 5V, 15Watt DC/DC Converters  
PERFORMANCE DATA  
D12 Models  
D24 Models  
DSM-5/2.65-3.3/3-D24 - Typical 3.3 VOUT Efficiency vs. Load  
(+5V @ 250mA)  
DSM-5/2.65-3.3/3-D12 - Typical 3.3 VOUT Efficiency vs. Load  
(+5V @ 250mA)  
90  
90  
85  
80  
75  
70  
65  
60  
V
IN = 18V  
V
IN = 10V  
85  
80  
75  
70  
65  
60  
V
IN = 24V  
V
IN = 12V  
V
IN = 36V  
V
IN = 18V  
0.3  
0.6  
0.9  
1.2  
1.5  
1.8  
2.1  
2.4  
2.7  
3
0.3  
0.6  
0.9  
1.2  
1.5  
1.8  
2.1  
2.4  
2.7  
3
+3.3V Output Current (Amps)  
+3.3V Output Current (Amps)  
DSM-5/2.65-3.3/3-D12 - Typical 5 VOUT Efficiency vs. Load  
(+3.3V @ 250mA)  
DSM-5/2.65-3.3/3-D24 - Typical 5 VOUT Efficiency vs. Load  
(+3.3V @ 250mA)  
90  
85  
80  
75  
70  
65  
60  
90  
85  
80  
75  
70  
65  
60  
V
IN = 10V  
V
IN = 18V  
V
IN = 12V  
V
IN = 24V  
V
IN = 18V  
V
IN = 36V  
0.3  
0.5  
0.8  
1.1  
1.3  
1.6  
1.9  
2.1  
2.4  
2.7  
0.3  
0.5  
0.8  
1.1  
1.3  
1.6  
1.9  
2.1  
2.4  
2.7  
+5V Output Current (Amps)  
+5V Output Current (Amps)  
DSM-5/2.65-3.3/3-D24 - Efficiency vs. Line and Load  
DSM-5/2.65-3.3/3-D12 - Efficiency vs. Line and Load  
88  
87  
86  
85  
84  
83  
82  
81  
80  
88  
87  
86  
85  
84  
83  
82  
81  
80  
V
OUT = 5V@2.65A/3.3V@0.25A  
OUT = 5V@1.5A/3.3V@2.25A  
V
OUT = 5V@2.65A/3.3V@0.25A  
OUT = 5V@1.5A/3.3V@2.25A  
OUT = 5V@0.25A/3.3V@3A  
V
V
V
OUT = 5V@0.25A/3.3V@3A  
V
18  
20  
22  
24  
26  
28  
30  
32  
34  
36  
10  
10.89 11.78 12.67 13.56 14.44 15.33 16.22 17.11  
18  
Input Voltage (Volts)  
Input Voltage (Volts)  
www.murata-ps.com/support  
MDC_DSM/DWR Models.D02 Page 7 of 9  
DSM/DWR Models  
Dual Output, 3.3V and 5V, 15Watt DC/DC Converters  
PERFORMANCE DATA  
D48 Models  
D12, 24, 48 Models  
Output Power vs. Ambient Temperature  
DSM-5/2.65-3.3/3-D48 - Typical 3.3 VOUT Efficiency vs. Load  
(+5V @ 250mA)  
VIN = Nominal, Natural Convection  
16  
14  
12  
10  
8
90  
85  
80  
75  
70  
65  
60  
V
IN = 36V  
V
IN = 60V  
6
V
IN = 75V  
V
IN = 48V  
4
2
0
–40  
0
25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100  
Ambient Temperature ( C)  
˚
0.3  
0.6  
0.9  
1.2  
1.5  
1.8  
2.1  
2.4  
2.7  
3
+3.3V Output Current (Amps)  
3TARTꢀ5P FROM 6).  
ꢀ6). ꢁ NOMINALꢂ ꢃ6   ꢄꢅꢃ!ꢆꢇꢅꢇ6   ꢈꢅꢈꢃ!ꢂ  
ꢉꢅꢊꢋ§& || ꢄꢉꢉ§& TANTALUM OUTPUT CAPACITORSꢅꢌ  
DSM-5/2.65-3.3/3-D48 - Typical 5 VOUT Efficiency vs. Load  
(+3.3V @ 250mA)  
90  
85  
80  
75  
70  
65  
60  
V
IN = 36V  
6).  
V
IN = 60V  
ꢇꢅꢇ6/54  
ꢃ6/54  
V
IN = 75V  
V
IN = 48V  
0.3  
0.5  
0.8  
1.1  
1.3  
1.6  
1.9  
2.1  
2.4  
2.7  
+5V Output Current (Amps)  
ꢈMSECꢆDIV  
DSM-5/2.65-3.3/3-D48 - Efficiency vs. Line and Load  
88  
87  
86  
85  
84  
83  
82  
81  
80  
V
OUT = 5V@2.65A/3.3V@0.25A  
OUT = 5V@1.5A/3.3V@2.25A  
OUT = 5V@0.25A/3.3V@3A  
V
V
36  
40.3  
44.7  
49  
53.3  
57.7  
62  
66.3  
70.7  
75  
Input Voltage (Volts)  
www.murata-ps.com/support  
MDC_DSM/DWR Models.D02 Page 8 of 9  
DSM/DWR Models  
Dual Output, 3.3V and 5V, 15Watt DC/DC Converters  
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.  
© 2014 Murata Power Solutions, Inc.  
www.murata-ps.com/support  
MDC_DSM/DWR Models.D02 Page 9 of 9  
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