OKR-T/6-W12-C [MURATA]
Adjustable Output 6-Amp SIP-mount DC/DC Converters; 可调输出6放大器SIP -安装DC / DC转换器
| 型号： | OKR-T/6-W12-C |
| 厂家： | 
muRata |
| 描述： | Adjustable Output 6-Amp SIP-mount DC/DC Converters |
| 文件： | 总11页 (文件大小：475K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
OKR-T/6 Series
s
Adjustable Output 6-Amp SIP-mount DC/DC Converters
PRODUCT OVERVIEW
The OKR-T/6 series are miniature SIP non-isolated Point-of-Load (PoL) DC/DC power converters
measuring only 0.41 x 0.65 x 0.30 inches (10.4 x 16.5 x 7.62 mm). The wide input range is 4.5 to 14
Volts DC. Based on 600 KHz synchronous buck topology, the high power conversion efficient Point of Load
(PoL) module features programmable output voltage and On/Off control, under voltage lock out (UVLO),
overcurrent and over temperature protections. These units meet all standard UL/EN/ IEC 60950-1 safety
certifications and RoHS-6 hazardous substance compliance.
Typical unit
F
ꢀ
600 KHz operation
Contents
Page
ꢀ
4.5-14 Vdc input voltage range
Description, Connection Diagram, Photograph
Ordering Guide, Model Numbering, Product Label
Mechanical Specifications, Input/Output Pinout
Detailed Electrical Specifications
Trim Connections
1
2
3
4
ꢀ
Programmable output voltage from 0.591-6.0 VDC
ꢀ
Drives up to 200 μF ceramic capacitive loads
ꢀ
High power conversion efficiency at 93%
5
Application Notes
Performance Data and Oscillograms
Soldering Guidelines
6
8
11
ꢀ
Outstanding thermal derating performance
ꢀ
Over temperature and over current protection
ꢀ
On/Off control
ꢀ
SIP, 0.41 x 0.65 x 0.30 inches (10.4 x 16.5 x
7.62 mm).
ꢀ
Meets UL/EN/IEC 60950-1 safety certification
ꢀ
RoHS-6 hazardous substance compliance
Figure 1. Connection Diagram
+Vin
+Vout
tꢀ4XJUDIJOH
tꢀ'JMUFST
F1
On/Off
Control
Controller
tꢀ$VSSFOUꢀ4FOTF
External
DC
Trim
Power
Source
Reference and
Error Amplifier
Open = On
Closed = Off
(Positive
On/Off)
Common
Common
For full details go to
www.murata-ps.com/rohs
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25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 1 of 11
OKR-T/6 Series
Adjustable Output 6-Amp SIP-mount DC/DC Converters
Performance Specifications and Ordering Guide
ORDERING GUIDE
Output
R/N (mVp-p) Regulation (Max.)
Input
Package
Efficiency
IOUT
IIN,
IIN,
VOUT
(Amps Power
VIN Nom. Range no load full load
Root Model
(Volts) max) (Watts)
Max.
Line
Load
(Volts) (Volts)
12 4.5-14
(mA)
(Amps)
Min.
Typ.
Case
C90
Pinout
OKR-T/6-W12-C 0.591-6
6
30
30
0.3%
0.5%
80
2.69
94.5% 95.5%
P73
➀ Dimensions are in inches (mm).
otherwise noted. Output capacitors are 1 ꢀF ceramic and| 10 ꢀF electrolytic in parallel.
Input cap is 22 ꢀF. See detailed specifications. I/O caps are necessary for our test equip-
ment and may not be needed for your application.
➁ Ripple and Noise is shown at Vout=1V. See specs for details.
➂ All specifications are at nominal line voltage, Vout= 5V and full load, +25 deg.C. unless
ꢁ
Vin must be 2V or higher than Vout for 3.3 to 5V outputs.
PART NUMBER STRUCTURE
OK R - T / 6 - W12 - E - C
Okami Non-isolated PoL
SIP-Mount
RoHS Hazardous
Substance Compliance
C = RoHS-6 (does not claim EU RoHS exemption 7b–lead in solder)
Forced On/Off Control
Blank = Standard on/off, open pin = ON
E = Forced enable, open pin = OFF, see specs
Output Voltage Range
T = Trimmable, 0.591-6 Volts
Note: Some model number combinations
may not be available. Contact Murata
Power Solutions for availability.
Wide Input Voltage Range
W12 = 4.5 – 14 Volts
Maximum Rated Output
Current in Amps
Product Label
Because of the small size of these products, the product label contains a
character-reduced code to indicate the model number and manufacturing date
code. Not all items on the label are always used. Please note that the label dif-
fers from the product photograph on page 1. Here is the layout of the label:
Model Number
Product Code
OKR-T/6-W12-C
OKR-T/6-W12E-C
R01106
R01106E
The manufacturing date code is four characters:
XXXXXX
Product code
Revision level
First character – Last digit of manufacturing year, example 2009
Second character – Month code (1 through 9 and O through D)
Third character – Day code (1 through 9 = 1 to 9, 10 = O and
11 through 31 = A through Z)
Mfg.
date
code
YMDX Rev.
Figure 2. Label Artwork Layout
Fourth character – Manufacturing information
The label contains three rows of information:
First row – Murata Power Solutions logo
Second row – Model number product code (see table)
Third row – Manufacturing date code and revision level
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25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 2 of 11
OKR-T/6 Series
Adjustable Output 6-Amp SIP-mount DC/DC Converters
MECHANICAL SPECIFICATIONS
0.30
(7.62)
0.22
(5.6)
0.41 (10.4)
C
L
0.20
(5.1)
0.12
(3.05)
0.05
(1.3)
REF
0.05
(1.3)
REF
0.205
(5.2)
THK
THK
0.65 (16.5)
Pin #1
0.15 (3.8)
0.05 (1.3)
0.15 (3.8)
0.05 (1.3)
Pin #5
0.067 (1.7)
0.134 (3.4)
0.032
(0.81)
0.032
(0.81)
0.067 (1.7)
0.134 (3.4)
OKR-T/6
OKR-T/10
OKR-T/3
Pin #1
Case C90
Case C72
Pin diameter: 0.032 (0.81)
Tolerance: 0.002 ( 0.05)
Pin material: Copper alloy
Pin finish: Pure matte tin 100-300 μin.
over 75-100 μin. nickel
Figure 2. OKR Series
Component locations are typical.
Dimensions are in inches (mm shown for ref. only).
INPUT/OUTPUT CONNECTIONS
OKR-T-W12
Third Angle Projection
Pin
Function P73
Remote On/Off Control
+VIN
1
2
3
4
5
Tolerances (unless otherwise specified):
.XX 0.02 (0.5)
.XXX 0.010 (0.25)
Angles 2ꢁ
Ground
+VOUT
Output Trim
Components are shown for reference only.
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25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 3 of 11
OKR-T/6 Series
Adjustable Output 6-Amp SIP-mount DC/DC Converters
Performance/Functional Specifications
All specifications are typical unless noted See Note 1.
Input
Dynamic Characteristics
Dynamic Load Response (50 to 100% load step, no external caps)
40 μSec to within 2ꢀ of ꢂnal value
300mV
Input Voltage Range
See Ordering Guide. See note 16.
di/dt = 1 A/μSec
Peak deviation
Recommended External Fuse
Reverse Polarity Protection (Note 9)
Isolation
20 Amps
None. Use an external fuse.
Switching Frequency
600 KHz
Not isolated. The input and output
commons are internally connected.
Environmental
TBD
Start-Up Voltage
4.2 Volts
3.4 Volts
Calculated MTBF (Note 4)
Undervoltage Shutdown
Operating Temperature Range
(Ambient temp., Vout=5 V., vertical mount)
Reflected (Back) Ripple Current (Note 2) 20 mA pk-pk
Internal Input Filter Type
Input Current:
Capacitive
Full power, see derating curves
-40 to +85 ꢁC. with derating
Operating PC Board Range, no derating -40 to +100 ꢁC.
Full Load Conditions
Inrush Transient
See Ordering Guide
0.4 A2Sec.
5 mA
Storage Temperature Range
Thermal Protection/Shutdown
Relative Humidity
-55 to +125 ꢁC.
+130 ꢁC.
Shutdown Mode (Off, UV, OT)
Output Short Circuit
No Load, 5V out
to 85ꢀ/+85 °C.
Restriction of Hazardous Substances
RoHS-6 (does not claim EU RoHS exemption
7b–lead in solder)
60 mA
80 mA
Low Line (Vin=Vmin, 5Vout)
4.49 Amps
Physical
Remote On/Off Control (Note 5)
Positive Logic
[Standard version]
Outline Dimensions
Weight
See Mechanical Speciꢂcations
0.07 ounces (2 grams)
ON = +1.5 V. to +Vin max. or open pin
OFF = –0.3 to +0.4 V. max. or ground pin
1 mA
Current
Safety
Meets UL/cUL 60950-1
CSA-C22.2 No. 60950-1
IEC/EN 60950-1
Remote On/Off Control
Positive Logic
[“E” version]
ON = +2 V. to +Vin max.,
49KΩ pulldown to ground
OFF = open pin or –0.3 to +0.4 V. max.
1 mA max.
Absolute Maximum Ratings
Current
Input Voltage
Continuous or transient
Turn-on Time:
Vin on to Vout regulated
Remote On to Vout regulated
15 Volts max.
6 mSec
6 mSec
Output Power
30 Watts max.
On/Off Control
0 Volts. min. to +Vin. max.
See Fuse section
Output
Input Reverse Polarity Protection
Output Current
Minimum Loading
No minimum load
Current-limited. Devices can withstand
sustained short circuit without damage.
Output Current Range
Accuracy (50% load, no trim)
Temperature Coefficient
Ripple/Noise (20 MHz bandwidth)
Line/Load Regulation
Efficiency
See ordering guide
2 ꢀ of Vnom
Storage Temperature
-40 to +125 deg. C.
0.02ꢀ per ꢁC. of Vout range
See Ordering Guide and note 14
See Ordering Guide and note 10
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 Speciꢂcations Table is not implied or
recommended.
See Ordering Guide and performance
graphs
CAUTION: This product is not internally fused. To comply with safety agency certiꢂcations
and to avoid injury to personnel or equipment, the user must supply an external fast-blow
fuse to the input terminals.
Maximum Capacitive Loading
Cap-ESR=0.001 to 0.015 Ohms
Cap-ESR >0.015 Ohms
200 μF
1000 μF (Min. cap. = 0μF)
Current Limit Inception
(98ꢀ of Vout setting, after warm up)
19 Amps
Short Circuit Mode (Notes 6, 12)
Short Circuit Current Output
Protection Method
0.6 Amp
Hiccup autorecovery upon overload
removal. (Note 8)
Short Circuit Duration
(output shorted to ground)
Continuous, no damage
None
Overvoltage protection
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25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 4 of 11
OKR-T/6 Series
Adjustable Output 6-Amp SIP-mount DC/DC Converters
Notes
(1) All specifications are typical unless noted. General conditions for Specifications are +25
deg.C, Vin=nominal, Vout=nominal (no trim installed), full rated load. Adequate airflow
must be supplied for extended testing under power.
(8) “Hiccup” overcurrent operation repeatedly attempts to restart the converter with a brief,
full-current output. If the overcurrent condition still exists, the restart current will be
removed and then tried again. This short current pulse prevents overheating and damag-
ing the converter. Once the fault is removed, the converter immediately recovers normal
operation.
All models are tested and specified with external 1ꢀF and 10 ꢀF paralleled ceramic/
tantalum output capacitors and a 22 ꢀF external input capacitor. All capacitors are low
ESR types. Caps are layout dependent These capacitors are necessary to accommodate
our test equipment and may not be required in your applications. All models are stable
and regulate within spec under no-load conditions.
(9) Input Fusing: If reverse polarity is accidentally applied to the input, to ensure reverse
input protection with full output load, always connect an external input fast-blow fuse
in series with the +Vin input. Use approximately twice the full input current rating with
nominal input voltage.
(2) Input Back Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input
filtering is Cin=2 x 100 ꢀF, 100V tantalum, Cbus=1000 ꢀF, 100V electrolytic, Lbus=1 ꢀH.
All caps are low ESR types.
(10) Regulation specifications describe the deviation as the line input voltage or output load
current is varied from a nominal midpoint value to either extreme.
(3) Note that Maximum Power Derating curves indicate an average current at nominal input
voltage. At higher temperatures and/or lower airflow, the DC/DC converter will tolerate
brief full current outputs if the total RMS current over time does not exceed the Derating
curve. All Derating curves are presented at sea level altitude. Be aware of reduced power
dissipation with increasing altitude.
(11) CAUTION: Since the converter is mounted on the end by its pins, do not subject it to high
vibration, shock or acceleration.
(12) Output current limit and short circuit protection is non-latching. When the overcurrent
fault is removed, the converter will immediately recover.
(13) Do not exceed maximum power specifications when adjusting the output trim. All pub-
lished specifications are listed at rated nominal output current using published Derating
curves. The maximum power specifications indicate brief operation before overcurrent
shutdown occurs. Note particularly that current must be limited at higher output voltage
in order to comply with maximum power requirements.
(4a) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1,
Case 3, ground fixed conditions, Tpcboard=+25 ꢁC, full output load, natural air convec-
tion.
(4b) Mean Time Before Failure is calculated using the MIL-HDBK-217N2 method, ground
benign, +25ºC., full output load, natural convection.
(14) At zero output current, the output may contain low frequency components which exceed
the ripple specification. The output may be operated indefinitely with no load.
(5) The On/Off Control is normally controlled by a switch or open collector or open drain tran-
sistor. But it may also be driven with external logic or by applying appropriate external
voltages which are referenced to Input Common.
(15) The input and output are not isolated. They share a single COMMON power and signal
return.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from
the selected setting.
(16) Vin must be 2V or higher than Vout for 3.3 to 6V outputs: Vin >= (2V + Vout)
(7) The outputs are not intended to sink appreciable reverse current.
Trim Connections
Output Voltage Adustment
The output voltage may be adjusted over a limited range by connecting an
external trim resistor (Rtrim) between the Trim pin and Ground. The Rtrim
resistor must be a 1/10 Watt precision metal film type, 0.5% accuracy or
better with low temperature coefficient, 100 ppm/oC. or better. Mount the
resistor close to the converter with very short leads or use a surface mount
trim resistor.
+VOUT
RTRIM
Trim
RLOAD
Ground
In the tables below, the calculated resistance is given. Do not exceed the
specified limits of the output voltage or the converter’s maximum power
rating when applying these resistors. Also, avoid high noise at the Trim
input. However, to prevent instability, you should never connect any capaci-
tors to Trim.
1.182
VOUT − 0.591
RTRIM (kꢂ) =
OKR-T/6-W12
Resistor Trim Equation, OKR-T/6-W12 models:
Output Voltage
6 V.
Calculated Rtrim (Ω)
218.5
1.182
_____________
RTRIM (kꢀ) =
(VOUT – 0.591)
5 V.
268
3.3 V.
2.5 V.
1.8 V.
1.5 V.
1.2 V.
1.0 V.
0.591 V.
436
619
978
1300
1940
2890
∞ (open)
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25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 5 of 11
OKR-T/6 Series
Adjustable Output 6-Amp SIP-mount DC/DC Converters
For best performance, we recommend installing a low-ESR capacitor
immediately adjacent to the converter’s input terminals. The capacitor should
be a ceramic type such as the Murata GRM32 series or a polymer type. Initial
suggested capacitor values are 10 to 22 ꢀF, rated at twice the expected maxi-
mum input voltage. Make sure that the input terminals do not go below the
undervoltage shutdown voltage at all times. More input bulk capacitance may
be added in parallel (either electrolytic or tantalum) if needed.
APPLICATION NOTES
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 safely, we recommend a fast blow fuse installed in the ungrounded
input supply line.
Recommended Output Filtering
The installer must observe all relevant safety standards and regulations. For
safety agency approvals, install the converter in compliance with the end-user
safety standard, i.e. IEC/EN/UL 60950-1.
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.
Initial values of 10 to 47 ꢀF may be tried, either single or multiple capacitors in
parallel. Mount these close to the converter. Measure the output ripple under
your load conditions.
Input Under-Voltage Shutdown and Start-Up Threshold
Under normal start-up conditions, converters will not begin to regulate properly
until the ramping-up 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 opera-
tion at a single input voltage.
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.
Users should be aware however of input sources near the Under-Voltage
Shutdown whose voltage decays as input current is consumed (such as
capacitor inputs), the converter shuts off and then restarts as the external
capacitor recharges. Such situations could oscillate. To prevent this, make
sure the operating input voltage is well above the UV Shutdown voltage AT ALL
TIMES.
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 compo-
nents, circuits and layout as shown in the figures below. In the figure below,
the Cbus and Lbus components simulate a typical DC voltage bus. Please
note that the values of Cin, Lbus and Cbus will vary according to the specific
converter model.
Start-Up Time
Assuming that the output current is set at the rated maximum, the Vin to Vout
Start-Up Time (see Specifications) is the time interval between the point when
the ramping input voltage crosses the Start-Up Threshold and the fully loaded
regulated output voltage enters and remains within its specified accuracy band.
Actual measured times will vary with input source impedance, external input
capacitance, input voltage slew rate and final value of the input voltage as it
appears at the converter.
TO
CURRENT
PROBE
OSCILLOSCOPE
+INPUT
LBUS
+
–
+
VIN
CBUS
CIN
These converters include a soft start circuit to moderate the duty cycle of its
PWM controller at power up, thereby limiting the input inrush current.
–
-INPUT
The On/Off Remote Control interval from On command to Vout regulated
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. The specification assumes that the output is fully loaded at maximum
rated current. Similar conditions apply to the On to Vout regulated specification
such as external load capacitance and soft start circuitry.
C
C
IN = 2 x 100ꢀF, ESR < 700mꢂ @ 100kHz
BUS = 1000ꢀF, ESR < 100mꢂ @ 100kHz
LBUS = 1ꢀH
Figure 4: Measuring Input Ripple Current
In the figure below, the two copper strips simulate real-world printed circuit
impedances between the power supply and its load. In order to minimize circuit
errors and standardize tests between units, scope measurements should be
made using BNC connectors or the probe ground should not exceed one half
inch and soldered directly to the test circuit.
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.
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25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 6 of 11
OKR-T/6 Series
Adjustable Output 6-Amp SIP-mount DC/DC Converters
Output Current Limiting
Current limiting inception is defined as the point at which full power falls below
the rated tolerance. See the Performance/Functional Specifications. Note par-
ticularly that the output current may briefly rise above its rated value in normal
operation as long as the average output power is not exceeded. This enhances
reliability and continued operation of your application. If the output current is
too high, the converter will enter the short circuit condition.
COPPER STRIP
+OUTPUT
-OUTPUT
RLOAD
SCOPE
C1
C2
Output Short Circuit Condition
When a converter is in current-limit mode, the output voltage will drop as the
output current demand increases. If the output voltage drops too low (approxi-
mately 98% of nominal output voltage for most models), the magnetically
coupled voltage used to develop primary side voltages will also drop, thereby
shutting down the PWM controller. Following a time-out period, the PWM will
restart, causing the output voltage to begin ramping up to its appropriate value.
If the short-circuit condition persists, another shutdown cycle will initiate. This
rapid on/off cycling is called “hiccup mode”. The hiccup cycling reduces the
average output current, thereby preventing excessive internal temperatures
and/or component damage. A short circuit can be tolerated indefinitely.
COPPER STRIP
C1 = 0.1ꢀF CERAMIC
C2 = 10ꢀF TANTALUM
LOAD 2-3 INCHES (51-76mm) FROM MODULE
Figure 5: Measuring Output Ripple and Noise (PARD)
Minimum Output Loading Requirements
All models regulate within specification and are stable under no load to full
load conditions. Operation under no load might however slightly increase
output ripple and noise.
The “hiccup” system differs from older latching short circuit systems
because you do not have to power down the converter to make it restart. The
system will automatically restore operation as soon as the short circuit condi-
tion is removed.
Thermal Shutdown
To prevent many over temperature problems and damage, these converters
include thermal shutdown circuitry. If environmental conditions cause the
temperature of the DC/DC’s 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, the converter will automatically restart. There is a small amount of
hysteresis to prevent rapid on/off cycling. The temperature sensor is typically
located adjacent to the switching controller, approximately in the center of the
unit. See the Performance and Functional Specifications.
Remote On/Off Control
Please refer to the Connection Diagram on page 1 for On/Off connections.
Positive polarity models are enabled when the On/Off pin is left open or is
pulled high to +Vin with respect to –Vin. Positive-polarity devices are disabled
when the On/Off is grounded or brought to within a low voltage (see Specifica-
tions) with respect to –Vin.
Dynamic control of the On/Off function should be able to sink appropriate
signal current when brought low and withstand appropriate voltage when
brought high. Be aware too that there is a finite time in milliseconds (see
Specifications) between the time of On/Off Control activation and stable,
regulated output. This time will vary slightly with output load type and current
and input conditions.
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.
Temperature Derating Curves
The graphs in the next section 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.
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 regulation problems, degraded transient response and possible oscilla-
tion or instability.
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 very low flow rates (below about 25 LFM) are similar to “natural
convection”, that is, not using fan-forced airflow.
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.
CAUTION: If you routinely or accidentally exceed these Derating guidelines,
the converter may have an unplanned Over Temperature shut down. Also, these
graphs are all collected at slightly above Sea Level altitude. Be sure to reduce
the derating for higher density altitude.
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25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 7 of 11
OKR-T/6 Series
Adjustable Output 6-Amp SIP-mount DC/DC Converters
OKR-T/6-W12-C PERFORMANCE DATA
Efficiency vs. Line Voltage and Load Current @ 25°C (Vout = 6V)
Maximum Current Temperature Derating @ Sea Level
(VIN = 7V and 12V, VOUT = 1V, 2.5V, or 6 V)
100
7.0
6.0
95
90
85
80
75
70
VIN = 13.8V
VIN = 12V
VIN = 7V
Natural convection
5.0
4.0
3.0
2.0
1.0
0.0
0
1
2
3
4
5
6
7
20
25
30
35
40
45
50
55
60
65
70
75
80
85
Load Current (Amps)
Ambient Temperature (ºC)
On/Off Enable Delay (Vin=13.8V, Vout=6V, Iout=6.2A, Cload=0)
Trace 4=Enable, Trace 2=Vout
Output Ripple and Noise (Vin=12V, Vout=6V, Iout=6A, Cload=0, ScopeBW=100MHz)
Step Load Transient Response (Vin=12V, Vout=6V, Cload=0, Iout=3A to 6A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2A/div.
Step Load Transient Response (Vin=12V, Vout=6V, Cload=0, Iout=6A to 3A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2A/div.
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email: sales@murata-ps.com
25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 8 of 11
OKR-T/6 Series
Adjustable Output 6-Amp SIP-mount DC/DC Converters
OKR-T/6-W12-C PERFORMANCE DATA
Efficiency vs. Line Voltage and Load Current @ 25°C (Vout = 5V)
100
95
VIN = 13.8V
VIN = 12V
VIN = 7V
90
85
80
75
70
0
1
2
3
4
5
6
7
Load Current (Amps)
On/Off Enable Delay (Vin=13.8V, Vout=5V, Iout=6.1A, Cload=0)
Trace 4=Enable, Trace 2=Vout
Output Ripple and Noise (Vin=12V, Vout=5V, Iout=6A, Cload=0, ScopeBW=100MHz)
Step Load Transient Response (Vin=12V, Vout=5V, Cload=0, Iout=3A to 6A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2A/div.
Step Load Transient Response (Vin=12V, Vout=5V, Cload=0, Iout=6A to 3A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2A/div.
www.murata-ps.com
email: sales@murata-ps.com
25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 9 of 11
OKR-T/6 Series
Adjustable Output 6-Amp SIP-mount DC/DC Converters
OKR-T/6-W12-C PERFORMANCE DATA
Efficiency vs. Line Voltage and Load Current @ 25°C (Vout = 2.5V)
100
95
90
85
80
75
70
65
VIN = 13.8V
VIN = 12V
VIN = 7V
0
1
2
3
4
5
6
7
Load Current (Amps)
On/Off Enable Delay (Vin=13.8V, Vout=2.5V, Iout=6A, Cload=0)
Trace 4=Enable, Trace 2=Vout
Output Ripple and Noise (Vin=12V, Vout=2.5V, Iout=6A, Cload=0, ScopeBW=100MHz)
Step Load Transient Response (Vin=12V, Vout=2.5V, Cload=0, Iout=3A to 6A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2A/div.
Step Load Transient Response (Vin=12V, Vout=2.5V, Cload=0, Iout=6A to 3A)
Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2A/div.
www.murata-ps.com
email: sales@murata-ps.com
25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 10 of 11
OKR-T/6 Series
Adjustable Output 6-Amp SIP-mount DC/DC Converters
Soldering Guidelines
Murata Power Solutions recommends the specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifica-
tions may cause damage to the product. 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:
For Sn/Pb based solders:
Maximum Preheat Temperature 115° C.
Maximum Preheat Temperature 105° C.
Maximum Pot Temperature
Maximum Solder Dwell Time
270° C.
Maximum Pot Temperature
250° C.
7 seconds Maximum Solder Dwell Time
6 seconds
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.
© 2010 Murata Power Solutions, Inc.
www.murata-ps.com/locations
email: sales@murata-ps.com
25 Feb 2010 MDC_OKR-T/6-W12 Series.A03 Page 11 of 11
相关型号：
OKR-T/6-W12-E-C
DC-DC Regulated Power Supply Module, 1 Output, 30W, Hybrid, ROHS COMPLIANT, SIP-5
MURATA
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