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AXH016A0X3-SR Datasheet(PDF) 15 Page - Lineage Power Corporation |
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AXH016A0X3-SR Datasheet(HTML) 15 Page - Lineage Power Corporation |
15 / 21 page Data Sheet August 12, 2008 Austin SuperlynxTM SMT Non-isolated Power Modules: 3.0 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 16A output current LINEAGE POWER 15 Thermal Considerations Power modules operate in a variety of thermal environments; however, sufficient cooling should always 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 test set-up is shown in Figure 34. Note that the airflow is parallel to the short axis of the module as shown in figure 33. The derating data applies to airflow in either direction of the module’s short axis. Air Flow T ref Top View Bottom View Figure 33. Tref Temperature measurement location. The thermal reference point, Tref used in the specifications is shown in Figure 33. For reliable operation this temperature should not exceed 115 oC. The output power of the module should not exceed the rated power of the module (Vo,set x Io,max). Please refer to the Application Note “Thermal Characterization Process For Open-Frame Board- Mounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures. Figure 34. Thermal Test Set-up. Heat Transfer via Convection Increased airflow over the module enhances the heat transfer via convection. Thermal derating curves showing the maximum output current that can be delivered at different local ambient temperatures (TA) for airflow conditions ranging from natural convection and up to 2m/s (400 ft./min) are shown in the Characteristics Curves section. Layout Considerations Copper paths must not be routed beneath the power module. For additional layout guide-lines, refer to the FLTR100V10 application note. Air flow x Power Module Wind Tunnel PWBs 5.97_ (0.235) 76.2_ (3.0) Probe Location for measuring airflow and ambient temperature 25.4_ (1.0) |
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