MSKW Series
5 Watt DC/DC Converter
Single and Dual Outputs
Rev A
2:1 Wide Input Voltage Range
FEATURES
● SMT Technology
● High Power Density
● Efficiency up to 85%
● 1500VDC I/O Isolation
● Short Circuit Protection
● Remote ON/OFF Control
● MTBF > 1,000,000 Hours
● Industry Standard Pin-out
● 2:1 Wide Input Voltage Range
● EMI Complies with EN55022 Class A
● Operating Temperature: -40°C to +71°C
DESCRIPTION
The MSKW series of DC/DC converters provide a maximum of 5 watts in a
“gull-wing” SMT package. These converters operate over 2:1 wide input
voltage ranges of 9-18, 18-36, or 36-75VDC. 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
85%, remote ON/OFF, 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: MSKW 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)
TEST CONDITIONS
Min
Nom
Max
Unit
VDC
VDC
VDC
12V nominal input models
24V nominal input models
48V nominal input models
12V nominal input models
24V nominal input models
48V nominal input models
12V nominal input models
24V nominal input models
48V nominal input models
12V nominal input models
24V nominal input models
48V nominal input models
All models
9
18
36
7.5
14
30
6.5
13
12
24
48
8
16
33
7
18
36
75
9
18
36
8
17
34
25
50
100
1
Input Voltage Range
Start Voltage
Under Voltage Shutdown
Input Surge Voltage (1000ms)
15
31
28
-0.7
-0.7
-0.7
VDC
A
Reverse Polarity Input Current
Input Filter
Reflected Ripple Current
Short Circuit Input Power
OUTPUT (Vo)
All models
Pi Filter
See Rating Chart
1000 3000
All models
mW
Output Voltage
See Rating Chart
Output Voltage Accuracy
Output Voltage Balance
Load Regulation
Line Regulation
Output Power
±0.5
±0.5
±0.3
±0.1
±1.0
±2.0
±1.0
±0.3
5
%
%
Dual Output, Balanced Loads
Io = 20% to 100%
Vin = min. to max.
%
W
Output Current
See Rating Chart
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
Transient Response Deviation
Transient Recovery Time
REMOTE ON/OFF CONTROL
Supply On
50
85
100
15
±6
500
mVpk-pk
mVpk-pk
mVrms
%
Over Line, Over Load, and Over Temperature
25% Load Step Change
25% Load Step Change
±2
250
μs
2.5 to 5.5VDC or open circuit
Supply Off
-0.7
0.8
10
-200
-300
VDC
Device Standby Input Current
Control Input Current (ON)
Control Input Current (OFF)
Control Common
mA
μA
μA
Vin = min to max
Vin = min to max
Referenced to negative input
PROTECTION
Short Circuit Protection
Over Power Protection
continuous
115
140
165
%
12V nominal input models
24V nominal input models
48V nominal input models
1500mA slow-blow type
700mA slow-blow type
350mA slow-blow type
Input Fuse Recommendation
GENERAL
Efficiency
See Rating Chart
Switching Frequency
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Internal Power Dissipation
Max. Capacitive Load
200
260
350
KHz
VDC
VDC
MΩ
pF
mW
60 seconds
Flash Test for 1 second
500VDC
1500
1650
1000
100KHz, 1V
650
750
2500
See Rating Chart
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797