The L6560 is a high-frequency switching converter, so a good layout and placement are crucial for its performance. STMicroelectronics recommends a compact layout with short traces, especially for the high-frequency nodes (e.g., SW, VIN, and VOUT). Place the input and output capacitors close to the IC, and use a solid ground plane to reduce EMI.
The inductor selection depends on the output current, switching frequency, and desired ripple current. A good starting point is to use the inductor selection guide provided by STMicroelectronics or to consult with inductor manufacturers. Consider factors such as inductor core material, size, and saturation current to ensure reliable operation.
The maximum junction temperature (Tj) for the L6560 is 150°C. However, it's recommended to keep the junction temperature below 125°C for reliable long-term operation. Ensure proper thermal design, including a heat sink if necessary, to maintain a safe operating temperature.
The L6560 is rated for input voltages up to 18V. While it may be possible to use it with higher input voltages, this is not recommended as it may exceed the absolute maximum ratings and reduce the IC's reliability. If you need to operate with higher input voltages, consider using a different IC or adding voltage regulation stages.
The L6560 has a built-in overcurrent protection feature. To implement it, connect a sense resistor (Rs) in series with the output inductor and connect the sense resistor's other end to the CS pin. The IC will detect overcurrent conditions and shut down the converter if the current exceeds the programmed threshold.
L6560 datasheet
by STMicroelectronics
