A good PCB layout for the UCC27524AD involves keeping the high-frequency switching nodes (e.g., SW and VIN) away from sensitive analog nodes, using a solid ground plane, and minimizing trace lengths and loops. TI provides a recommended layout in the application note SLUA623.
The inductor value depends on the input voltage, output voltage, and desired switching frequency. A good starting point is to use the inductor selection guide in the UCC27524AD datasheet, and then fine-tune the value based on the specific design requirements and efficiency goals.
The UCC27524AD is rated for operation up to 105°C ambient temperature, but the maximum junction temperature is 150°C. Ensure proper thermal design and heat sinking to maintain a safe operating temperature.
Yes, the UCC27524AD can be used in a synchronous rectification topology. However, this requires careful design and layout to ensure proper synchronization and minimize body diode conduction losses.
To troubleshoot issues with the UCC27524AD, start by checking the PCB layout, component values, and voltage rails. Use an oscilloscope to observe the switching waveforms and identify any anomalies. Consult the datasheet and application notes for guidance on troubleshooting common issues.
UCC27524AD datasheet
by Texas Instruments
