Texas Instruments provides a recommended PCB layout in the UCC28C42DRG4 datasheet, but it's essential to follow good PCB design practices, such as keeping the input and output traces separate, using a solid ground plane, and minimizing loop areas to reduce EMI.
To ensure reliable startup and shutdown, it's crucial to follow the recommended startup and shutdown sequences outlined in the datasheet. Additionally, ensure that the input voltage rises and falls monotonically, and that the output voltage is properly decoupled to prevent voltage spikes.
The maximum output current capability of the UCC28C42DRG4 is dependent on the input voltage, output voltage, and thermal conditions. Refer to the datasheet's electrical characteristics table and thermal derating curves to determine the maximum output current for your specific application.
To compensate for output voltage ripple, use a suitable output filter capacitor, such as a ceramic or film capacitor, with a value of at least 10uF. Additionally, consider adding a post-regulator or a linear regulator to further reduce the output voltage ripple.
The recommended input capacitor value is typically in the range of 1uF to 10uF, depending on the input voltage and current requirements. A low-ESR ceramic or film capacitor is recommended to minimize input voltage ripple and ensure stable operation.
UCC28C42DRG4 datasheet
by Texas Instruments
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