Wall Industries, Inc.

Rev E

LANE-6KV SERIES

1 Watt Medical & Industrial DC/DC Power Converters

05/22/2014

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 • Fax 603-778-9797

website: www.wallindustries.com • e-mail: sales@wallindustries.com

Page 4 of 5

DESIGN CONSIDERATIONS

Peak-to-Peak Output Noise Measurement Test

Use a 0.33µF 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.

+Out

-Out

+Vin

-Vin

Resistive

Load

Scope

Copper Strip

Cout

Copper Strip

Single Output

DC/DC

Converter

+Out

-Out

+Vin

-Vin

Resistive

Load

Scope

Copper Strip

Cout

Com.

Scope

Cout

Copper Strip

Copper Strip

Dual Output

DC/DC

Converter

TEST SETUP

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. 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 100 KHz) capacitor of 2.2µF for the 5V input

devices and a 1.0µF for the 12V input devices.

+

+Out

-Out

+Vin

-Vin

DC/DC

Converter

Load

DC Power

Source

+

-

Cin

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 1.5µF capacitors at the output.

+Out

-Out

+Vin

-Vin

Load

DC Power

Source

+

-

Cout

Single Output

DC/DC

Converter

+Out

-Out

+Vin

-Vin

Load

DC Power

Source

+

-

Cout

Com.

Load

Cout

Dual Output

DC/DC

Converter

Maximum Capacitive Load

The LANE-6KV series has a limitation of maximum connected capacitance on the output. The power module may be operated in

current limiting mode during start-up, affecting the ramp-up and the start-up time. For optimum performance we recommend 220µF

maximum capacitive load for dual outputs and 680µF capacitive load for single outputs. The maximum capacitance can be found in

the Model Selection Table.

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 a test setup.

DUT

Position of air velocity

probe and thermocouple

50mm / 2in

Air Flow

15mm / 0.6in