Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833

603-778-2300 www.wallindustries.com Fax 603-778-9797

ME Series

5600VDC I/O Isolation

Single and Dual Outputs

5~6 Watt Medical DC/DC Converter

Rev B

FEATURES

● Efficiency up to 80%

● Low Isolation Capacitance

● Low Leakage Current

● 2:1 Wide Input Voltage Range

● Single & Dual Outputs

● Operating Temperature: -40°C to +55°C

● 5600VDC I/O Isolation

● Medical Safety Approval UL/cUL 60601-1

● Short Circuit Protection

● All I/O Clearance and Creepage Distance 2.0mm min.

● MTBF > 700,000 Hours

● Complies with EN55022 Class A with External Coupling Capacitor Cio=1nF < Class B

DESCRIPTION

The ME series of medical approved (UL/cUL 60601-1) dc/dc converters are specially designed to provide ultra high levels of isolation (5600VDC) in

a 24-pin DIP package. These converters operate over input voltage ranges of 9-18VDC, 18-36VDC, and 36-75VDC. This series also provides

regulated single and dual output voltages of 5, 12, ±12, and ±15VDC. The -40°C to +55°C operating temperature makes this series of dc/dc

converters ideal for data communication equipment, mobile battery driven equipment, distributed power systems, process/machine control

equipment, telecommunications equipment, mixed analog/digital subsystems, computer peripheral systems, and industrial robot systems. These

converters have a power rating of 6W and a typical full load efficiency of 80%. This series complies with EN55022 Class A conducted noise and

radiated emissions with an external coupling capacitor Cio=1nF < Class B. The EN55022 Class A conducted noise compliance minimizes design

time, cost, and eliminates the need for external filter components. All models are over load and short circuit protected.

SPECIFICATIONS: ME 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

12V nominal input models

9

12

18

24V nominal input models

18

24

36

Input Voltage Range

48V nominal input models

36

48

75

VDC

12V nominal input models

7

8

9

24V nominal input models

13

15

18

Start Voltage

48V nominal input models

30

33

36

VDC

12V nominal input models

8.5

24V nominal input models

16

Under Voltage Shutdown

48V nominal input models

34

VDC

Short Circuit Input Power

All models

3000

mW

12V nominal input models

-0.7

25

24V nominal input models

-0.7

50

Input Surge Voltage (1000ms)

48V nominal input models

-0.7

100

VDC

Input Filter

Pi Filter

Leakage Current

240VAC, 60Hz

2

μA

Output Voltage

See Table

Output Voltage Accuracy

±0.5

±1.0

%

Output Voltage Balance

Dual Output, Balanced Loads

±0.5

±2.0

%

Load Regulation

Io = 25% to 100%

±0.5

±1.0

%

Line Regulation

Vin = min. to max.

±0.3

±0.5

%

Output Power

See Table

Output Current Range

See Table

5V output models

75

100

Ripple & Noise (20MHz)

Other output models

100

150

Ripple & Noise (20MHz)

Over Line, Over Load, and Over Temperature

180

Ripple & Noise (20MHz)

25

mVrms

Transient Recovery Time

25% load step change

300

500

μs

Transient Response Deviation

25% load step change

±3

±6

%

PROTECTION

Over Load Protection

120

%

Short Circuit Protection

Continuous

12V nominal input models

1200mA slow-blow type

24V nominal input models

600mA slow-blow type

Input Fuse Recommendation

48V nominal input models

300mA slow-blow type

GENERAL

Efficiency

See Table

Switching Frequency

150

KHz

Isolation Voltage Rated

60 seconds

5600

VDC

Isolation Voltage Test

Flash Test for 1 second

6000

VDC

Isolation Resistance

500VDC

1000

M

Ω

Isolation Capacitance

100KHz, 1V

7

13

pF

Internal Power Dissipation

2500

mW

Max. Capacitive Load

See Table