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

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

CMDMW Series

15 Watt Single Output

Chassis Mount DC/DC Converter

4:1 Ultra Wide Input Voltage Range

Rev. B

DESIGN & FEATURE CONSIDERATONS

Remote On/Off

Positive logic remote on/off turns the module on during a logic high voltage on the remote on/off pin, and off during a logic low. 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 at on/off terminal during a logic low is -1mA. The maximum allowable leakage current of the switch at on/off

terminal (2.5 to 5.5V) is 50uA.

Over Current Protection

To provide protection in a fault (output overload) 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 into its specified range

.

Efficiency vs Input Voltage

Efficiency vs Output Load

Derating Curve without Heatsink

Derating Curve with Heatsink