Richtek provides a recommended PCB layout in their application note ANI-45, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
Richtek recommends using a Type III compensation network for the output filter, with a suggested component values and layout provided in the datasheet. Additionally, the application note ANI-45 provides more detailed guidance on output filter design and optimization.
Although not explicitly stated in the datasheet, Richtek recommends keeping the input voltage ripple below 1% of the nominal input voltage to ensure stable operation and prevent oscillations.
While the RT6285GSP is rated for operation up to 125°C, Richtek recommends derating the output current and power dissipation at high temperatures to ensure reliable operation. Consult the datasheet and application notes for specific guidance on thermal derating.
Richtek provides a troubleshooting guide in their application note ANI-45, which covers common causes of oscillations and instability, such as inadequate output filtering, poor PCB layout, and incorrect component selection.
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