TDK-Lambda recommends a multi-layer PCB with a solid ground plane and thermal vias to dissipate heat. A minimum of 2oz copper thickness is recommended. Additionally, a thermal interface material (TIM) should be used between the DC-DC converter and the heatsink to ensure efficient heat transfer.
To ensure EMC, TDK-Lambda recommends using a shielded enclosure, keeping the DC-DC converter away from sensitive components, and using a common-mode choke or ferrite bead on the input and output lines. Additionally, the converter should be placed on a solid ground plane and connected to the chassis ground.
The derating curve for the CSW65-28/A is not explicitly stated in the datasheet. However, as a general guideline, the output power should be derated by 2.5% per degree Celsius above 50°C. This means that at 70°C, the output power should be derated by 50% to ensure reliable operation.
Yes, the CSW65-28/A can be used in a redundant or parallel configuration. However, it is essential to ensure that the converters are synchronized and that the output voltages are matched to prevent oscillations or instability. TDK-Lambda recommends consulting their application notes or contacting their technical support for specific guidance.
The MTBF of the CSW65-28/A is not explicitly stated in the datasheet. However, TDK-Lambda provides a reliability report that estimates the MTBF based on MIL-HDBK-217F calculations. The MTBF is typically in the range of 1-2 million hours, depending on the operating conditions and environment.
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