Texas Instruments provides a recommended PCB layout in the 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 start-up and shutdown, it's crucial to follow the recommended power sequencing, ensure a stable input voltage, and add a soft-start circuit to limit the inrush current. Additionally, consider adding a voltage supervisor to monitor the input voltage and reset the device if it falls below a certain threshold.
While the datasheet specifies a maximum output current of 3A, it's essential to consider the thermal limitations and derate the output current accordingly. The actual output current capability will depend on the ambient temperature, PCB layout, and thermal management.
To minimize standby power consumption, ensure that the enable pin (EN) is properly driven to a logic low level, and consider adding a low-power voltage regulator to power the controller during standby. Additionally, optimize the transformer design and component selection to reduce losses.
To ensure EMI compliance, follow good PCB design practices, use a shielded transformer, and add EMI filters to the input and output stages. Additionally, consider using a spread-spectrum clock generator to reduce EMI emissions.
PT6303C datasheet
by Texas Instruments
