CUI recommends a PCB layout 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) can be used to improve heat transfer between the module and the heat sink.
To ensure reliable startup and shutdown, CUI recommends a soft-start circuit to limit inrush current and a shutdown circuit to prevent voltage spikes. Additionally, a minimum load of 10% is recommended to ensure stable operation.
CUI provides derating curves for temperature and altitude in their application notes. For the PYBE20-Q24-D15, the derating curve for temperature is 2.5% per °C above 40°C, and for altitude, it is 1.5% per 1,000 feet above sea level.
Yes, the PYBE20-Q24-D15 can be used in a redundant configuration. However, CUI recommends using a diode ORing circuit to prevent back-feeding and ensure reliable operation. Additionally, a redundant configuration may require additional components and design considerations.
CUI provides an MTBF rating of 550,000 hours at 40°C, calculated according to MIL-HDBK-217F. However, this rating may vary depending on the specific application and operating conditions.
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PYBE20-Q24-D15 Overview
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