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EHHD006A0B41Z Datasheet(PDF) 9 Page - Lineage Power Corporation

Part No. EHHD006A0B41Z
Description  EHHD006A0B Series (Eighth-Brick) DC-DC Converter Power Modules
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Maker  LINEAGEPOWER [Lineage Power Corporation]
Homepage  http://www.lineagepower.com
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EHHD006A0B41Z Datasheet(HTML) 9 Page - Lineage Power Corporation

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Data Sheet
August 29, 2011
EHHD006A0B Series Eighth-Brick Power Modules
18 - 75Vdc Input; 12V/6Adc Output
Thermal Considerations
The power modules operate in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation.
Considerations include ambient temperature, airflow,
module power dissipation and the need for increased
reliability. A reduction in the operating temperature of
the module will result in an increase in reliability. The
thermal data presented here is based on physical
measurements taken in a wind tunnel.
The thermal reference points, Tref, used in the
specifications for open frame modules is shown in
Figure 13. For reliable operation, these temperatures
should not exceed 125
oC.
Figure 13. Tref Temperature Measurement
Locations for Open Frame Module.
The thermal reference point, Tref, used in the
specifications for modules with a heat plate is shown
in Figure 14. For reliable operation, this temperature
should not exceed 115
OC.
Figure 14. Tref Temperature Measurement
Location for Module with Heat plate.
Heat Transfer via Convection
Increased airflow over the module enhances the heat
transfer via convection. Derating curves showing the
maximum output current that can be delivered by
each module versus local ambient temperature (TA)
for natural convection and up to 2m/s (400 ft./min)
forced airflow are shown in Figures 15 - 18.
AMBIENT TEMEPERATURE, TA (
oC)
Figure 15. Output Current Derating for the Open
Frame Module; Airflow in the Transverse Direction
from Vout(-) to Vout(+); VIN =48.
AMBIENT TEMEPERATURE, TA (
oC)
Figure 16. Output Current Derating for the Module
with Heat plate; Airflow in the Transverse
Direction from Vout(-) to Vout(+);VIN =48V.
AMBIENT TEMEPERATURE, TA (
oC)
Figure 17. Output Current Derating for the Open
Frame Module; Airflow in the Transverse Direction
from Vout(-) to Vout(+); VIN =24V.
AIRFLOW
AIRFLOW


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