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

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

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

TEST CONDITIONS

Min

Nom

Max

Unit

24V nominal input models

9

24

36

Input Voltage Range

48V nominal input models

18

48

75

VDC

24V nominal input models

7

8

9

Start Voltage

48V nominal input models

14

16

18

VDC

24V nominal input models

6

7

8

Under Voltage Shutdown

48V nominal input models

13

15

17

VDC

24V nominal input models

-0.7

50

Input Surge Voltage (1000ms)

48V nominal input models

-0.7

100

VDC

Reverse Polarity Input Current

1

A

Input Filter

Pi Filter

Reflected Ripple Current

See Rating Chart

Short Circuit Input Power

1000

3000

mW

Output Voltage

See Rating Chart

Output Voltage Accuracy

±0.5

±2.0

%

Output Voltage Balance

Dual Output, Balanced Loads

±0.5

±3.0

%

Load Regulation

Io = 10% to 100%

±0.3

±1.0

Line Regulation

Vin = min. to max.

±0.2

±1.0

%

Output Power

5

W

Output Current

See Rating Chart

Ripple & Noise (20MHz)

50

85

Ripple & Noise (20MHz)

Over Line, Over Load, and Over Temperature

100

Ripple & Noise (20MHz)

15

mVrms

Transient Response Deviation

25% Load Step Change

±2

±6

%

Transient Recovery Time

25% Load Step Change

250

500

µs

REMOTE ON/OFF CONTROL

Supply On

2.5 to 5.5VDC or open circuit

Supply Off

-0.7

0.8

VDC

Device Standby Input Current

10

mA

Control Input Current (ON)

Vin = min to max

-600

µA

Control Input Current (OFF)

Vin = min to max

-700

µA

Control Common

Referenced to negative input

PROTECTION

Short Circuit Protection

continuous

Over Power Protection

115

%

24V nominal input models

1500mA slow-blow type

Input Fuse Recommendation

48V nominal input models

750mA slow-blow type

GENERAL

Efficiency

See Rating Chart

Switching Frequency

340

KHz

Isolation Voltage Rated

60 seconds

1500

VDC

Isolation Voltage Test

Flash Test for 1 second

1650

VDC

Isolation Resistance

500VDC

1000

MΩ

Isolation Capacitance

100KHz, 1V

650

750

pF

Internal Power Dissipation

2500

mW

Max. Capacitive Load

See Rating Chart

ENVIRONMENTAL

Operating Temperature (Ambient)

-40

+71

°C

Operating Temperature (Case)

-40

+90

°C

Storage Temperature

-40

+125

°C

Lead Temperature

1.5mm from case for 10 seconds

260

°C

Humidity

95

%

Cooling

Free air convection

Temperature Coefficient

±0.01

±0.02

%/°C

MTBF

MIL-HDBK-217F @ 25°C, Ground Benign

1000

Khours

Conducted EMI

EN55022 Class A

PHYSICAL

Weight

14 grams

Dimensions (L x W x H)

1.31x0.81x0.40 in (33.4x20.6x10.2 mm)

Case Material

Non-conductive black plastic

Flammability

UL94V-0

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.