Download Data Sheet

Rev A
FEATURES
● SMT Technology
● High Power Density
● Efficiency up to 83%
● 1500VDC I/O Isolation
● Short Circuit Protection
● Remote ON/OFF Control
● MTBF > 1,000,000 Hours
● 4:1 Ultra Wide Input Voltage Range
● EMI Complies with EN55022 Class A
● Operating Temperature: -40°C to +71°C
MSKUW Series
5 Watt DC/DC Converter
Single and Dual Outputs
4:1 Ultra Wide Input Voltage Range
DESCRIPTION
The MSKUW series of DC/DC converters provide a maximum of 5 watts in a “gull-wing” SMT
package. These converters operate over 4:1 ultra wide input voltage ranges of 9-36 or
18-75VDC. This series also has single output voltages of 3.3, 5, 12, and 15VDC and
dual output voltages of ±5, ±12, and ±15VDC. These converters have a typical full load
efficiency of 83%, remote ON/OFF control, and continuous short circuit protection. The
-40°C~+71°C operating temperature make these converters ideal for data communication
equipment, mobile battery driven equipment, process/machine control equipment,
telecommunication equipment, computer peripheral systems, distributed power systems, mixed analog/digital
subsystems, and industrial robot systems. The EN55022 Class A conducted noise compliance minimizes
design time, cost, and eliminates the need for external filter components.
SPECIFICATIONS: MSKUW Series
All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.
We reserve the right to change specifications based on technological advances.
SPECIFICATION
INPUT (Vin)
Input Voltage Range
Start Voltage
Under Voltage Shutdown
Input Surge Voltage (1000ms)
TEST CONDITIONS
Min
Nom
Max
24V nominal input models
48V nominal input models
24V nominal input models
48V nominal input models
24V nominal input models
48V nominal input models
24V nominal input models
48V nominal input models
9
18
7
14
6
13
-0.7
-0.7
24
48
8
16
7
15
36
75
9
18
8
17
50
100
1
Reverse Polarity Input Current
Input Filter
Reflected Ripple Current
Short Circuit Input Power
Unit
VDC
VDC
VDC
VDC
A
Pi Filter
See Rating Chart
1000
3000
mW
OUTPUT (Vo)
Output Voltage
Output Voltage Accuracy
Output Voltage Balance
Load Regulation
Line Regulation
Output Power
Output Current
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Transient Response Deviation
Transient Recovery Time
See Rating Chart
±0.5
±2.0
±0.5
±3.0
±0.3
±1.0
±0.2
±1.0
5
See Rating Chart
50
85
100
15
±2
±6
250
500
Dual Output, Balanced Loads
Io = 10% to 100%
Vin = min. to max.
Over Line, Over Load, and Over Temperature
25% Load Step Change
25% Load Step Change
%
%
%
W
mVpk-pk
mVpk-pk
mVrms
%
μs
REMOTE ON/OFF CONTROL
Supply On
Supply Off
Device Standby Input Current
Control Input Current (ON)
Control Input Current (OFF)
Control Common
-0.7
Vin = min to max
Vin = min to max
2.5 to 5.5VDC or open circuit
0.8
10
-600
-700
Referenced to negative input
VDC
mA
μA
μA
PROTECTION
Short Circuit Protection
Over Power Protection
Input Fuse Recommendation
continuous
115
24V nominal input models
48V nominal input models
%
1500mA slow-blow type
750mA slow-blow type
GENERAL
Efficiency
Switching Frequency
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Internal Power Dissipation
Max. Capacitive Load
See Rating Chart
340
60 seconds
Flash Test for 1 second
500VDC
100KHz, 1V
1500
1650
1000
650
750
2500
See Rating Chart
KHz
VDC
VDC
MΩ
pF
mW
ENVIRONMENTAL
Operating Temperature (Ambient)
Operating Temperature (Case)
Storage Temperature
Lead Temperature
Humidity
Cooling
Temperature Coefficient
MTBF
Conducted EMI
-40
-40
-40
1.5mm from case for 10 seconds
MIL-HDBK-217F @ 25°C, Ground Benign
+71
+90
+125
260
95
Free air convection
±0.01
±0.02
1000
°C
°C
°C
°C
%
%/°C
Khours
EN55022 Class A
PHYSICAL
Weight
Dimensions (L x W x H)
Case Material
Flammability
14 grams
1.31x0.81x0.40 in (33.4x20.6x10.2 mm)
Non-conductive black plastic
UL94V-0
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
MSKUW Series
5 Watt DC/DC Converter
Single and Dual Outputs
4:1 Ultra Wide Input Voltage Range
Rev A
OUTPUT VOLTAGE / CURRENT RATING CHARTS
SINGLE OUTPUT MODELS
Model Number
Input Voltage
MSKW24S33UW4
Output
Voltage
Output Current
Min
Max
Input Current
No Load Max Load
Reflected
Ripple Current
Maximum
Capacitive Load
76%
2000μF
80%
2000μF
3.3 VDC
120mA
1200mA
24 VDC
5 VDC
100mA
1000mA
(9 ~ 36 VDC)
12 VDC
41.7mA
417mA
251mA
83%
470μF
MSKW24S15UW5
15 VDC
33.3mA
333mA
251mA
83%
330μF
MSKW48S33UW4
3.3 VDC
120mA
1200mA
109mA
76%
2000μF
5 VDC
100mA
1000mA
80%
2000μF
MSKW24S5UW5
MSKW24S12UW5
MSKW48S5UW5
48 VDC
217mA
Efficiency (Typ)
260mA
20mA
15mA
130mA
10mA
10mA
MSKW48S12UW5 (18 ~ 75 VDC)
12 VDC
41.7mA
417mA
126mA
83%
470μF
MSKW48S15UW5
15 VDC
33.3mA
333mA
125mA
83%
330μF
Efficiency (Typ)
Maximum
Capacitive Load
80%
680μF
83%
330μF
DUAL OUTPUT MODELS
Model Number
Input Voltage
MSKW24D5UW5
MSKW24D12UW5
24 VDC
(9 ~ 36 VDC)
MSKW24D15UW5
MSKW48D5UW5
MSKW48D12UW5
48 VDC
(18 ~ 75 VDC)
MSKW48D15UW5
Output
Voltage
Output Current
Min
Max
Input Current
No Load Max Load
Reflected
Ripple Current
±5 VDC
±50mA
±500mA
260mA
±12 VDC
±20.8mA
±208mA
±15 VDC
±16.7mA
±167mA
252mA
83%
220μF
±5 VDC
±50mA
±500mA
130mA
80%
680μF
±12 VDC
±20.8mA
±208mA
83%
330μF
±15 VDC
±16.7mA
±167mA
83%
220μF
20mA
10mA
251mA
125mA
15mA
10mA
126mA
NOTES
1. Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%.
2. The MSKUW series requires a minimum output loading to maintain specified regulations. Operation under no-load conditions will not
damage these devices, however they may not meet all listed specifications.
3. All DC/DC converters should be externally fused at the front end for protection.
4. Other input and output voltages may be available, please contact factory.
5. It is not recommended to use the water-washing process on SMT units.
*Due to advances in technology, specifications subject to change without notice.
BLOCK DIAGRAMS
Single Output
Dual Output
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Rev A
INPUT VOLTAGE TRANSIENT RATING
DERATING CURVE
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
MSKUW Series
5 Watt DC/DC Converter
Single and Dual Outputs
4:1 Ultra Wide Input Voltage Range
MSKUW Series
5 Watt DC/DC Converter
Single and Dual Outputs
4:1 Ultra Wide Input Voltage Range
Rev A
Efficiency vs Input Voltage (Single Output)
Efficiency vs Input Voltage (Dual Output)
Efficiency vs Output Load (Single Output)
Efficiency vs Output Load (Dual Output)
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
MSKUW Series
5 Watt DC/DC Converter
Single and Dual Outputs
4:1 Ultra Wide Input Voltage Range
Rev A
MECHANICAL DRAWING
CONNECTING PIN PATTERNS
Top View (2.54mm / 0.1 inch grids)
Unit: mm [inches]
1. Tolerance: X.X±0.25 [X.XX±0.01]
X.XX±0.13 [X.XXX±0.005]
2. Pin: ±0.05 [±0.002]
PIN CONNECTIONS
PIN
Single Output
Dual Output
1
Remote On/Off
Remote On/Off
2
-Vin
-Vin
3
-Vin
-Vin
9
NC
Common
10
NC
NC
11
NC
-Vout
12
NC
NC
13
NC
NC
14
+Vout
+Vout
15
NC
NC
16
-Vout
Common
22
+Vin
+Vin
23
+Vin
+Vin
24
NC
NC
NC: No Connection
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
MSKUW Series
5 Watt DC/DC Converter
Single and Dual Outputs
4:1 Ultra Wide Input Voltage Range
Rev A
DESIGN & FEATURE CONSIDERATONS
Over Current Protection
To provide protection in a fault (output over load) condition the unit is equipped with internal current limiting circuitry and can
endure current limiting for an unlimited duration. At the point of current limit inception the unit shifts from voltage control to
current control. The unit operates normally once the output current is brought back to its specified range.
Input Source / Remote On/Off
Positive logic remote on/off turns the module ON during a logic high voltage on the remote on/off pin, and turns the module
OFF during a logic low voltage on the remote on/off pin. To turn the power module ON and OFF, the user must supply a
switch to control the voltage between the on/off terminal and the -Vin terminal. The switch can be an open collector or
equivalent.
A logic low is –0.7V to 0.8V.
A logic high is 2.5V to 5.5V.
The maximum sink current of the switch at the on/off terminal during a logic low is 300μA. The maximum sink current of the
switch at the on/off terminal = 2.5 to 5.5V is 200μA or open.
Input Source Impedance
The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect
the stability of the power module. In applications where power is supplied over long lines and output loading is high, it may
be necessary to use a capacitor at the input to ensure startup. A capacitor mounted close to the power module helps ensure
stability of the unit, it is recommended to use a good quality low Equivalent Series Resistance (ESR < 1.0Ω at 100KHz)
capacitor of 3.3μF for the 12V input models and a 2.2μF for the 24V and 48V input models.
+
+Vin
+
DC Power
Source
+Out
DC / DC
Converter
Load
Cin
-
-Vin
-Out
Maximum Capacitive Load
The MSKUW series has a limit of maximum connected capacitance at the output. The power module may be operated in
current limiting mode during start-up, affecting the ramp-up and the startup time. The maximum capacitance can be found in
the Output Voltage / Current Rating Chart.
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin (4.7μH) and Cin (220μF, ESR < 1.0Ω at 100KHz) to simulate
source impedance.
To Oscilloscope
+
Battery
+
+Vin
Lin
Cin
Current
Probe
+Out
DC / DC
Converter
-Vin
Load
-Out
Capacitor Cin offsets possible battery impedance.
Current ripple is measured at the input terminals of the module. Measurement bandwidth is 0 ~ 500KHz.
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
MSKUW Series
5 Watt DC/DC Converter
Single and Dual Outputs
4:1 Ultra Wide Input Voltage Range
Rev A
Peak-to-Peak Output Noise Measurement Test
Use a Cout 0.47μF ceramic capacitor.
Scope measurement should be made by using a BNC socket; measurement bandwidth is 0 ~ 20MHz. Position the load
between 50mm and 75mm from the DC/DC Converter.
+Vin
+Out
Single Output
DC / DC
Converter
-Vin
+Vin
Copper Strip
Cout
Resistive
Scope
Load
-Out
+Out
Copper Strip
Cout
Dual Output
DC / DC
Converter
Com.
-Vin
-Out
Scope
Resistive
Load
Cout
Scope
Output Ripple Reduction
A good quality low ESR capacitor placed as close as possible across the load will give the best ripple and noise performance.
To reduce output ripple, it is recommended to use 3.3μF capacitors at the output.
+
+Vin
Single Output
DC / DC
Converter
DC Power
Source
-
+
+Out
-Vin
+Vin
DC Power
Source
Cout
Load
-
-Out
+Out
Dual Output
Com.
DC / DC
Converter
-Vin
-Out
Cout
Load
Thermal Considerations
Many conditions affect the thermal performance of the power module, such as orientation, airflow over the module, and board
spacing. To avoid exceeding the maximum temperature rating of the components inside the power module, the case
temperature must be kept below 90°C. The derating curves are determined from measurements obtained in an experimental
apparatus.
Position of air velocity
probe and thermocouple
50mm / 2in
15mm / 0.6in
Air Flow
DUT
COMPANY INFORMATION:
Wall Industries, Inc. has created custom and modified units for over 40 years. Our in-house research and development
engineers will provide a solution that exceeds your performance requirements on time and on budget. Our ISO9001-2000
certification is just one example of our commitment to producing a high quality, well-documented product for our customers.
Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working
closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to
provide ongoing support for your project above and beyond the design and production phases. Give us a call today to
discuss your future projects.
Contact Wall Industries for further information:
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
(603)778-2300
(888)587-9255
(603)778-9797
[email protected]
www.wallindustries.com
5 Watson Brook Rd.
Exeter, NH 03833
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797