CUI recommends a PCB layout with a minimum of 1 oz copper thickness, a 2-layer board with a solid ground plane, and a thermal relief pattern around the device to ensure optimal thermal performance.
To ensure reliable startup and shutdown, CUI recommends a soft-start circuit to limit inrush current, and a shutdown circuit that slowly discharges the output capacitors to prevent voltage spikes.
The maximum allowable capacitance on the output of the VF-S250-24A is 2200uF. Exceeding this value may cause instability or oscillation in the converter.
While the VF-S250-24A is rated for operation up to 85°C, CUI recommends derating the output power by 2.5% per degree above 70°C to ensure reliable operation in high-temperature environments.
CUI recommends using a TVS diode or a surge protector device on the input to protect the VF-S250-24A from voltage surges and spikes, which can damage the internal components.
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VF-S250-24A Overview
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