Datasheet

Application Note
Created by Traco Electronic AG Arp. www.tracopower.com Date: July 28
th
, 2009 / Rev.: 1.0 / Page 28 / 32
150W Single Output
Over Temperature Protection
Sufficient cooling is needed for the power module and provides more reliable operation of the unit. If a fault condition occurs, the
temperature of the unit will be higher. And it will damage the unit. For protecting the power module, the unit includes
over-temperature protection circuit. When the temperature of the case is to the protection threshold, the unit enters “Shunt
Down” mode. And it will auto restart when the temperature is down.
Thermal Consideration
The power module operates in a variety of thermal environments. However, sufficient cooling should be provided to help ensure
reliable operation of the unit. Heat is removed by conduction, convection, and radiation to the surrounding Environment. Proper
cooling can be verified by measuring the point as the figure below. The temperature at this location should not exceed 110°C.
When Operating, adequate cooling must be provided to maintain the test point temperature at or below 110°C. Although the
maximum point temperature of the power modules is 110°C, you can limit this temperature to a lower value for extremely high
reliability.
TEP 150WI
BOTTOM VIEW
Heatsink
The equipped heatsink is for lower temperature and higher reliability of the module.
unit: inch (mm)
Measurement shown in inches (mm)