RECOM recommends a PCB layout with a large copper area for heat dissipation, and a minimum of 2oz copper thickness. A thermal via array under the module can also improve heat dissipation.
To ensure reliable start-up and operation with a high-capacitance output filter, RECOM recommends adding a soft-start circuit or a pre-charge resistor to limit the inrush current.
The maximum allowed voltage deviation on the input voltage pin is ±10% of the nominal input voltage. Exceeding this deviation may affect the converter's performance and reliability.
The RK-0509S is rated for operation up to 85°C ambient temperature. For higher temperatures, derating of the output power is required. Consult RECOM's application notes for derating guidelines.
RECOM recommends using an external OVP circuit, such as a zener diode and resistor, to protect the load from overvoltage conditions. The OVP threshold should be set to 10-15% above the nominal output voltage.
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