OBSOLETE PRODUCT

UMP Models
www.murata-ps.com
25-40W, Single Output, DC/DC Converters
OBSOLETE PRODUCT
Last time buy: 04 January 2013
FEATURES

Higher operating temperatures

Fully potted
Typical unit

Designed to meet UL1950 and

EN60950-1 (basic insulation)
 mark available (75V-input models)
PRODUCT OVERVIEW
DATEL’s UMP Models are fully potted, 25-40 Watt DC/
DC converters designed to meet UL1950 and EN609501 safety standards. The combination of the UMP's
higher efficiencies and thermally conductive potting
compound enables these devices to achieve higher
operating temperatures without derating. The 2" x 3"
UMP "footprint" conforms with the standard pinout
and pin geometries of most 3" x 3" devices (a 33%
space savings) while delivering as much as 60% more
power (40W vs. 25W).
Applicable to a wide range of telecom, computer
and other OEM applications, UMP Model DC/DC’s
operate from four input voltage ranges (10-36V for
"Q12" models, 18-36V for "D24" models, 18-75V for
"Q48" models, and 36-75V for "D48" models). Available output voltages are 5, 12 and 15 Volts.
For reliability and affordability, DATEL exploits

Fully isolated, 1500Vdc guaranteed

 25/30/35/40W output power

Standard pinout! Smaller size!

New 2" x 3" package fits 3" x 3" footprint

5V, 12V or 15V outputs

Four input voltage ranges:
10-36V, 18-36V
18-75V, 36-75V

High efficiency (to 85%)

Input under and overvoltage lockout

VOUT trim and on/off control

Modifications and customs for OEMs
contemporary, high-speed, automatic assembly to
construct the UMP’s traditional, field-proven, SMTon-pcb designs. Devices employ corrosion-resistant
metal cases with plastic headers. Heat generating
transformer cores and power semiconductors are
mounted directly to the cases, which have threaded
inserts for add-on heat sinks or pcb mounting. Devices are specified for –40 to +100°C operation and
derating information is provided for operation with/
without heat sinks and forced air flow.
All devices feature input pi filters, input undervoltage and overvoltage shutdown, output overvoltage
protection, output current limiting, and thermal
shutdown. UL, CSA, EN and IEC compliance testing is
available (75V-input devices will be CE marked) as are
full EMI/EMC characterizations.
SIMPLIFIED BLOCK DIAGRAM
+VIN
+VOUT
COMMON
–VIN
PWM
CONTROLLER
ISOLATION
UVLO & OVLO
COMPARATORS
ON/OFF
CONTROL
REFERENCE &
ERROR AMP
TRIM
CASE
Figure 1. Simplified Schematic
Typical topology is shown
For full details go to
www.murata-ps.com/rohs
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MDC_UMP25-40W_B04 Page 1 of 9
UMP Models
Performance Specifications and Ordering
25-40W, Single Output, DC/DC Converters
Guide ➀
Output
VOUT
(Volts)
Model
Input
R/N (mVp-p) ➁
Typ.
Max.
IOUT
(Amps)
Regulation (Max.)
Load ➂
Line
VIN Nom.
(Volts)
Range
(Volts)
IIN ➃
(mA)
Efficiency
Min.
Typ.
Package
(Case,
Pinout)
UMP-5/5-Q12
5
5
75
100
±0.5%
±1%
24
10-36
50/1366
77%
79%
C11, P14
UMP-5/6-Q48
5
6
80
110
±0.5%
±1%
48
18-75
25/799
79%
80%
C11, P14
UMP-5/7-D24
5
7
75
100
±0.5%
±1%
24
18-36
25/1796
82%
83%
C11, P14
UMP-5/8-D48
5
8
75
100
±0.5%
±1%
48
36-75
25/1026
82%
84%
C11, P14
UMP-12/2.1-Q12
12
2.1
100
150
±0.5%
±1%
24
10-36
50/1326
80%
82%
C11, P14
UMP-12/2.5-Q48
12
2.5
100
150
±0.5%
±1%
48
18-75
30/770
82%
83%
C11, P14
UMP-12/3-D24
12
3
100
150
±0.5%
±1%
24
18-36
25/1825
82%
84%
C11, P14
UMP-12/3.3-D48
12
3.3
100
150
±0.5%
±1%
48
36-75
25/1004
83%
85%
C11, P14
UMP-15/1.7-Q12
15
1.7
100
150
±0.5%
±1%
24
10-36
50/1341
80%
82%
C11, P14
UMP-15/2-Q48
15
2
100
150
±0.5%
±1%
48
18-75
30/770
82%
83%
C11, P14
UMP-15/2.5-D24
15
2.5
100
150
±0.5%
±1%
24
18-36
25/1879
83%
84%
C11, P14
UMP-15/2.65-D48
15
2.65
100
150
±0.5%
±1%
48
36-75
25/1008
83%
85%
C11, P14
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions unless otherwise noted.
➁ Ripple/Noise (R/N) measured over a 20MHz bandwidth.
➂ 10 to 100% load.
P A R T
N U M B E R
➃ Nominal line voltage, no-load/full-load conditions.
➄ RoHS-6 compliance does not claim EU RoHS exemption 7b–lead in solder.
S T R U C T U R E
O U T P U T
U MP - 5 / 8 - D48 - C
RoHS-6 hazardous substance
compliant (Note 5)
Output Configuration:
U = Unipolar
I N P U T VO LTAG E R A N G E :
Q12 = 10-36 Volts (24V nominal)
D24 = 18-36 Volts (24V nominal)
Q48 = 18-75 Volts (48V nominal)
D48 = 36-75 Volts (48V nominal)
Fully Potted Metal Package
Nominal Output Voltage:
5, 12 or 15 Volts
C O N S I D E R A T I O N S
UMP Model DC/DC Converters are classified, by output power, into 25,
30, 35 and 40 Watt devices. For the single-output devices listed above, the
maximum available output power is the product of the nominal output voltage
and the maximum allowable output current indicated within the part number
(see Part Number Structure). A UMP-5/6-Q48, for example, can source
6 Amps from its 5V output (over its entire 18-75V input voltage range) delivering an output power of 30 Watts. A UMP-5/8-D48 can deliver
40 Watts.
* Contact Murata Power Solutions
(Datel) for availability.
Maximum Output Current
in Amps
M E C H A N I C A L
P O W E R
S P E C I F I C A T I O N S
Optional Heat Sink Kit
(Part Number HS-23 <non-RoHS> or HS-23-C <RoHS>)
3.04
(77.22)
Case C11
0.55
(13.97)
0.27
(6.86)
1
6
2
7
3
8
4
(4) THREADED INSERTS
#4-40 THD THRU
1.600
2.04
(40.64)
4 EQ. SP. @ (51.82)
0.400 (10.16)
9
5
10
BOTTOM VIEW
0.22
(5.59)
0.40
(10.16)
0.040 ±0.002 DIA.
(1.016 ±0.051)
2.500
(63.50)
1.200
(30.48)
2.600
(66.04)
0.20
(5.08)
INSULATED
BASE
0.20 MIN
(5.08)
0.42
(10.67)
3.00
(76.20)
METAL
CASE
2.600
(66.04)
DIMENSIONS ARE IN INCHES (MM)
0.22
(5.59)
I/O Connections
Pin Function P14
1
No Pin
2
–Input
3
+Input
4
Case **
5 On/Off Control*
6
No Pin
7
No Pin
8
Common
9
+VOUT
10
Trim
* See note 3 on next page.
** The case must be grounded
for most applications.
1.200
(30.48)
TOP VIEW
2.00
(50.80)
0.120 DIA. (3.048)
(4 PLACES)
0.10
(2.54)
0.50
(12.70)
MATERIAL: BLACK ANODIZED ALUMINUM
4 MOUNTING SCREWS AND 0.009 (0.229) THERMAL PAD INCLUDED
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MDC_UMP25-40W_B04 Page 2 of 9
UMP Models
25-40W, Single Output, DC/DC Converters
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted. ➀
Absolute Maximum Ratings
Input
Input Voltage Range:
Q12 Models
D24 Models
Q48 Models
D48 Models
10-36 Volts (24V nominal)
18-36 Volts (24V nominal)
18-75 Volts (48V nominal)
36-75 Volts (48V nominal)
Undervoltage Lockout:
Q12 Models
D24 Models
Q48 Models
D48 Models
9 Volts
17 Volts
17 Volts
34 Volts
Output Overvoltage Protection
5V Outputs
12V Outputs
15V Outputs
Input Current
See Ordering Guide
Output Current
Input Filter Type ➁
Pi
Overvoltage Shutdown:
D24 and Q12 Models
D48 and Q48 Models
Current limited. Max. current and
short-circuit duration are model
dependent.
40 Volts
80 Volts
Storage Temperature
–40 to +105°C
Lead Temperature (soldering, 10 sec.)
+300°C
Reverse-Polarity Protection
Yes (Instantaneous, 6A maximum)
On/Off Control (Pin 5) ➂
TTL high (or open) = on, low = off
Input Voltage:
Q12/D24 Models
Q48/D48 Models
44 Volts
88 Volts
Input Reverse-Polarity Protection
Current must be <6A. Brief
duration only. Fusing recommended.
6.8 Volts, limited duration
15 Volts, limited duration
18 Volts, limited duration
±1%, maximum
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.
Temperature Coefficient
±0.02% per °C
T E C H N I C A L
Ripple/Noise (20MHz BW)
See Ordering Guide
Line/Load Regulation
See Ordering Guide
Efficiency
See Ordering Guide
Isolation Voltage
1500Vdc, minimum
Isolation Capacitance
130pF
Output
VOUT Accuracy (50% load)
N O T E S
Floating Outputs
Since these are isolated DC/DC converters, their outputs are "floating." Users may ground either the Common (pin 8) for normal usage or the positive
side (+Output, pin 9) to effectively reverse the output polarity.
Current Limiting
Continuous, auto-recovery
Filtering and Noise Reduction
Overvoltage Protection
Zener/transorb clamp, magnetic feedback
All UMP 25-40 Watt DC/DC Converters achieve their rated ripple and noise
specifications without the use of external input/output capacitors. In critical
applications, input/output ripple and noise may be further reduced by installing electrolytic capacitors across the input terminals and/or low-ESR tantalum or electrolytic capacitors across the output terminals. The caps should
be located as close to the power converters as possible. Typical values are
listed in the tables below. In many applications, using values greater than
those listed will yield better results.
Dynamic Characteristics
Transient Response (50% load step)
200µsec max. to ±1.5% of final value
Switching Frequency
165kHz (±10%)
Environmental
Operating Temperature (ambient):
Without Derating
With Derating
Maximum Case Temperature
–40 to +50°C (model dependent)
to +100°C (See Derating Curves)
+100°C
Storage Temperature
–40 to +105°C
Relative Humidity
To 85°C /85% RH, non-condensing
Physical
Safety
UL/cUL/EN/IEC 60950-1
Dimensions
2.04" x 3.04" x 0.55" (51.8 x 77.2 x 14mm)
Shielding
5-sided
Case Connection
Pin 4
Case Material
Aluminum, black anodized finish
with plastic header
Flammability Rating
UL94V-0
Pin Material
Gold-plated copper alloy with nickel
underplate
Weight
6 ounces (170 grams)
➀ These converters require a minimum 10% output loading to maintain specified regulation.
Operation under no-load conditions will not damage these devices; however they may not
meet all listed specifications.
➁ Deleted.
➂ Applying voltage to the Control pin with no input power applied can damage the converter.
➃ Listed spec is for input-to-output. Input-to-case and output-to-case isolation is 1000Vdc min.
To Reduce Input Ripple
Q12/D24 Models
Q48/D48 Models
47µF, 50V
10µF, 100V
To Reduce Output Ripple
5V Outputs
12/15V Outputs
47µF, 10V, Low ESR
22µF, 20V, Low ESR
Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. For DATEL UMP
DC/DC Converters, you should use slow-blow type fuses with values no
greater than the following:
VIN Range
Q12
D24
Q48
D48
Fuse Value
4A
4A
3A
2A
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MDC_UMP25-40W_B04 Page 3 of 9
UMP Models
25-40W, Single Output, DC/DC Converters
Temperature Derating and Electrical Performance Curves
Q12 Models (25 Watts)
Q48 Models (30 Watts)
25
30
25
Output Power (Watts)
Output Power (Watts)
20
15
10
Natural Convection Cooling
20
15
Natural Convection Cooling
10
150 Linear Feet Per Minute
150 Linear Feet Per Minute
5
0
–40
300 Linear Feet Per Minute
300 Linear Feet Per Minute
5
0
0
40
45
50
55
60
65
70
75
80
85
90
95
100
–40
0
30
35
40
45
Ambient Temperature (°C)
Figure 2a. Temperature Derating Without Heat Sink
55
60
65
70
75
80
85
90
95
100
90
95
100
Figure 3a. Temperature Derating Without Heat Sink
25
30
25
Output Power (Watts)
20
Output Power (Watts)
50
Ambient Temperature (°C)
15
10
Natural Convection Cooling
150 Linear Feet Per Minute
20
15
Natural Convection Cooling
10
150 Linear Feet Per Minute
300 Linear Feet Per Minute
5
300 Linear Feet Per Minute
5
0
–40
0
0
40
45
50
55
60
65
70
75
80
85
90
95
100
–40
0
30
35
40
Ambient Temperature (°C)
45
50
55
60
65
70
75
80
85
Ambient Temperature (°C)
Figure 2b. Temperature Derating With Heat Sink
Figure 3b. Temperature Derating With Heat Sink
Model UMP-5/5-Q12
Model UMP-5/6-Q48
82.5
86
80
82
75
78
Efficiency (%)
Efficiency (%)
70
65
Efficiency @ 10VIN
60
Efficiency @ 12VIN
55
74
Efficiency @ 18VIN
Efficiency @ 24VIN
70
Efficiency @ 48VIN
Efficiency @ 24VIN
66
Efficiency @ 36VIN
Efficiency @ 72VIN
50
62
45
0.56
1.11
1.67
2.22
2.78
3.33
3.89
4.44
5
0.67
1.33
2
2.67
3.33
4
4.67
5.33
Output Current (Amps)
Output Current (Amps)
Figure 2c. Efficiency vs. Output Current and Input Voltage
Figure 3c. Efficiency vs. Output Current and Input Voltage
6
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MDC_UMP25-40W_B04 Page 4 of 9
UMP Models
25-40W, Single Output, DC/DC Converters
Temperature Derating and Electrical Performance Curves
D24 Models (35 Watts)
D48 Models (40Watts)
40
35
35
30
Output Power (Watts)
Output Power (Watts)
30
25
20
15
Natural Convection Cooling
150 Linear Feet Per Minute
10
25
20
15
Natural Convection Cooling
150 Linear Feet Per Minute
10
300 Linear Feet Per Minute
300 Linear Feet Per Minute
5
5
0
0
–40
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
–40 0
30
35
40
Ambient Temperature (°C)
50
55
60
65
70
75
80
85
90
95
100
Ambient Temperature (°C)
Figure 4a. Temperature Derating Without Heat Sink
Figure 5a. Temperature Derating Without Heat Sink
35
40
30
35
30
25
Output Power (Watts)
Output Power (Watts)
45
20
15
Natural Convection Cooling
150 Linear Feet Per Minute
10
25
20
15
Natural Convection Cooling
150 Linear Feet Per Minute
10
300 Linear Feet Per Minute
300 Linear Feet Per Minute
5
5
0
0
–40
0
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
–40
0
30
35
40
Ambient Temperature (°C)
45
50
55
60
65
70
75
80
85
90
95
100
Ambient Temperature (°C)
Figure 4b. Temperature Derating With Heat Sink
Figure 5b. Temperature Derating With Heat Sink
Model UMP-5/7-D24
Model UMP-5/8-D48
88
88
86
86
84
82
Efficiency (%)
Efficiency (%)
84
82
80
Efficiency @ 18VIN
Efficiency @
80
78
Efficiency @ 36VIN
76
24VIN
Efficiency @ 48VIN
74
78
Efficiency @ 36VIN
Efficiency @ 72VIN
72
76
70
74
68
0.77
1.56
2.33
3.11
3.89
4.67
5.44
6.22
Output Current (Amps)
Figure 4c. Efficiency vs. Output Current and Input Voltage
7
0.5
1
2
3
4
5
6
7
8
Output Current (Amps)
Figure 5c. Efficiency vs. Output Current and Input Voltage
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MDC_UMP25-40W_B04 Page 5 of 9
UMP Models
25-40W, Single Output, DC/DC Converters
On/Off Control (Standard)
The On/Off Control pin (pin 5) may be used for remote on/off operation. As
shown in Figure 6, the control pin has an internal 10k pull-up resistor to
approximately 10V. The converter is designed so that it is enabled when the
control pin is left open (normal mode) and disabled when the control pin is
pulled low (to less than +0.8V relative to –Input, pin 2).
/54054
).054
K7
4URNS
42)-
,/!$
#/--/.
3
+10V
#/--/.
+INPUT
10k9
Figure 7. Trim Connections Using a Trimpot
5
Note:
Install either a fixed
trim-up resistor
or a fixed trim-down
resistor depending upon
desired output voltage.
ON/OFF
CONTROL
2
–INPUT
/54054
4RIM $OWN
).054
Figure 6. Driving the On/Off Control Pin
42)-
Dynamic control of the on/off function is best accomplished with a mechanical relay or an open-collector/open-drain drive circuit (optically isolated if
appropriate). The drive circuit should obviously be able to sink approximately
1mA when activated and withstand more than 10 Volts when deactivated.
,/!$
4RIM 5P
#/--/.
#/--/.
Figure 8. Trim Connections Using Fixed Resistors
Applying an external voltage to pin 5 when no input power is applied to the
converter can cause permanent damage to the converter. The on/off control
function, however, is designed such that the converter can be disabled (pin
5 pulled low) while input power is ramping up and then "released" once the
input has stabilized. Under these circumstances, it takes approximately 30ms
for the output of the fully loaded DC/DC to ramp up and settle to within ±1%
of its final value after the converter has been turned on.
Case Connection
Unlike most other DC/DC converters, UMP DC/DC's do not have their metal
case connected to one of their input pins. The "uncommitted" case is connected to pin 4 which, depending on your system configuration, must be
connected to earth or chassis ground to ensure reliable operation.
UMP Trim Resistor Equations
Output Trimming
The equations listed below will set the output to a desired voltage using a
single fixed trim resistor if you do not prefer to use a potentiometer. Do not
exceed ±5% from the nominal output voltage. Trim resistors should have low
temperature coefficients, ±100ppm/°C or less to ensure stability. Adjustment
beyond the specified adjustment range is not recommended. Attach the trim
resistors as close as practical to the converter.
VOUT may be trimmed ±5% via a single trimpot or fixed resistor. The trimpot
should be connected between +Output (pin 9) and Common (pin 8) with its
wiper connected to pin 10 (Trim). A trimpot can also be used to determine the
value of a single fixed resistor which can be connected between pin 10 (Trim)
and pin 9 (+Output) to trim "down" the output voltages, or between pins 10
(Trim) and 6 (–Output) to trim "up" the output voltages. Fixed resistors should
be metal-film types with absolute TCR's less than 100ppm/°C to ensure
To trim the voltage higher than the nominal output, install the resistor between the trim pin and –VOUT terminal.
stability.
To trim the voltage lower than the nominal output, install the resistor between
the trim pin and +VOUT terminal.
Threaded Inserts and Heatsink Installation
CAUTION: Do not use the threaded inserts to bolt the converter down to a
PC board. That will place unnecessary force on the mounting pins. Instead,
the converter is held securely by only soldering the mounting pins.
These equations are a starting point. The final output voltage at the load will
vary slightly with load current, distance to the load (and voltage drop), input
voltage, ambient temperature, airflow, initial setpoint accuracy and several
other variables. For critical applications, you should measure the actual voltage obtained.
When attaching the heat sink from above the converter, use a maximum
torque of 2 inch-pounds (0.23 N-m) on the 4-40 bolts to avoid damaging the
threaded inserts. Use a tiny amount of fastener adhesive or 4-40 lockwashers to secure the bolts.
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MDC_UMP25-40W_B04 Page 6 of 9
6
UMP Models
25-40W, Single Output, DC/DC Converters
Trim Equations
5-015-01
24
$/7. K7
24
50 K7
6/n
6/./-n6/
6/n6/./-
n
n
5-0$5-0$
24
$/7. K7
24
50 K7
6/n
6/./-n6/
6/n6/./-
n
EMI RADIATED EMISSIONS
If you’re designing with EMC in mind, please note that all of DATEL’s UMP
25-40 Watt DC/DC Converters have been characterized for radiated and
conducted emissions in our new EMI/EMC laboratory. Testing is conducted
in an EMCO 5305 GTEM test cell utilizing EMCO automated EMC test
software. Radiated emissions are tested to the limits of FCC Part 15, Class
B and CISPR 22 (EN 55022), Class B. Correlation to other specifications can
be supplied upon request. Radiated emissions plots to FCC and CISPR 22
for model UMP-5/8-D48 appear below.
n
UMP-5/8-D48 Radiated Emissions
FCC Part 15 Class B, 3 Meters
Converter Output = +5Vdc @ +6.45 Amps
5-01
24
$/7. K7
6/n
6/./-n6/
80
n
70
24
50 K7
6/n6/./-
n
5-015-0$5-0$
24
$/7. K7
24
50 K7
6/n
6/./-n6/
6/n6/./-
n
Radiated Emissions (dBµV/M)
60
FCC Class B Limit
50
40
30
20
10
0
Radiated Emissions
–10
n
–20
Frequency (MHz)
5-015-01
24
50 K7
6/n
6/./-n6/
6/n6/./-
n
24
$/7. K7
24
50 K7
6/./-n6/
6/n6/./-
70
60
n
n
24
$/7. K7
24
50 K7
6/./-n6/
6/n6/./-
50
EN 55022 Class B Limit
40
30
20
10
0
5-0$
6/n
80
n
5-0$
6/n
UMP-5/8-D48 Radiated Emissions
EN 55022 Class B, 10 Meters
Converter Output = +5Vdc @ +6.45 Amps
Radiated Emissions (dBµV/M)
24
$/7. K7
1000
100
Radiated Emissions
–10
n
–20
1000
100
Frequency (MHz)
n
Note: Resistor values are in k. Accuracy of adjustment is subject to
tolerances of resistors and factory-adjusted, initial output accuracy.
VO = desired output voltage. VONOM = nominal output voltage.
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MDC_UMP25-40W_B04 Page 7 of 9
UMP Models
25-40W, Single Output, DC/DC Converters
Quality and Reliability
Design for Reliability is woven throughout our multi-phased, new-product-development process. Design-for-reliability practices are fully documented and
begin early in the new-product development cycle with the following goals:
1. To work from an approved components/vendors list ensuring the use of
reliable components and the rigorous qualification of new components.
2. To design with safety margins by adhering to a strict set of derating
guidelines and performing theoretical worst-case analyses.
3. To locate potential design weaknesses early in the product-development
cycle by using extensive HALT (Highly Accelerated Life Testing).
4. To prove that early design improvements are effective by employing a
thorough FRACA (Failure Reporting Analysis and Corrective Action) system.
HALT Testing
The goal of the accelerated-stress techniques used by DATEL is to force
device maturity, in a short period of time, by exposing devices to excessive
levels of "every stimulus of potential value." We use HALT (Highly Accelerated Life Testing) repeatedly during the design and early manufacturing
phases to detect potential electrical and mechanical design weaknesses
that could result in possible future field failures.
80
40
60
40
20
20
0
0
Random Vibration (G's)
Design for Reliability
Typical HALT Profile
100
Temperature (°C)
These models are the latest DC/DC Converters to emerge from DATEL’s new,
company-wide approach to designing and manufacturing the most reliable
power converters available. The five-pronged program draws our Quality
Assurance function into all aspects of new-product design, development,
characterization, qualification and manufacturing.
–20
–40
10
20
30
40
50
60
70
80
90
Test Time (minutes)
During HALT, prototype and pre-production DC/DC converters are subjected
to progressively higher stress levels induced by thermal cycling, rate of temperature change, vibration, power cycling, product-specific stresses (such as
dc voltage variation) and combined environments. The stresses are not meant
to simulate field environments but to expose any weaknesses in a product’s
electro/mechanical design and/or assembly processes. The goal of HALT is to
make products fail so that device weaknesses can be analyzed and strengthened as appropriate. Applied stresses are continually stepped up until products
eventually fail. After corrective actions and/or design changes, stresses are
stepped up again and the cycle is repeated until the "fundamental limit of the
technology" is determined.
DATEL has invested in a Qualmark OVS-1 HALT tester capable of applying
voltage and temperature extremes as well as 6-axis, linear and rotational,
random vibration. A typical HALT profile (shown above) consists of thermal
cycling (–55 to +125°C, 30°C/minute) and simultaneous, gradually increasing,
random longitudinal and rotational vibration up to 20G’s with load cycling and
applied-voltage extremes added as desired. Many devices in DATEL’s new
A-Series could not be made to fail prior to reaching either the limits of the HALT
chamber or some previously known physical limit of the device. We also use
the HALT chamber and its ability to rapidly cool devices to verify their "coldstart" capabilities.
www.murata-ps.com/support
MDC_UMP25-40W_B04 Page 8 of 9
UMP Models
25-40W, Single Output, DC/DC Converters
Qualification
In-Line Process Controls and Screening
For each new product, electrical performance is verified via a comprehensive characterization process and long-term reliability is confirmed via a rigorous
qualification procedure. The qual procedure includes such strenuous tests as
thermal shock and 500 hour life. Qual testing is summarized below.
A combination of statistical sampling and 100% inspection techniques keeps
our assembly line under constant control. Parameters such as solder-paste
thickness, component placement, cleanliness, etc. are statistically sampled,
charted and fine tuned as necessary. Visual inspections are performed by
trained operators after pick-and-place, soldering and cleaning operations.
Units are 100% electrically tested prior to potting. All devices are temperature
cycled, burned-in, hi-pot tested and final-electrical tested prior to external
visual examination, packing and shipping.
Qualification Testing
Qualification Test
Method/Comments
HALT
DATEL in-house procedure
High Temperature Storage
Max. rated temp., 1,000 hours
Thermal Shock
10 cycles, –55 to +125°C
Rapid Response to Problems
Temperature/Humidity
+85°C, 85% humidity, 48 hours
Lead Integrity
DATEL in-house procedure
DATEL employs an outstanding corrective-action system to immediately address any detected shortcomings in either products or processes. Whenever
our assembly, quality or engineering personnel spot a product/process problem, or if a product is returned with a potential defect, we immediately perform
a detailed failure analysis and, if necessary, undertake corrective actions.
Over time, this system has helped refine our assembly operation to yield one
of the lowest product defect rates in the industry.
Life Test
+70°C, 500 hours*
Marking Permanency
DATEL in-house procedure
End Point Electrical Tests
Per product specification
* Interim electrical test at 200 hours.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
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. 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.
© 2012 Murata Power Solutions, Inc.
www.murata-ps.com/support
MDC_UMP25-40W_B04 Page 9 of 9