CMCG Series
30 Watt Single Output
2:1 Input Voltage Range
Rev. B
Chassis Mount DC/DC Converter
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.
Output Over Voltage Protection
The output over voltage clamp consists of control circuitry, which is independent of the primary regulation loop that monitors the voltage on
the output terminals. The control loop of the clamp has a higher voltage set point than the primary loop. This provides a redundant voltage
control that reduces the risk of output over voltage. The OVP level can be found in the “Output Voltage / Current Rating Chart.”
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
105°C. The derating curves are determined from measurements obtained in an experimental apparatus.
Efficiency vs Input Voltage
Efficiency vs Output Load
DERATING CURVE
Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
WALL [ WALL INDUSTRIES,INC. ]
