A good PCB layout is crucial for optimal performance. TI recommends a 4-layer PCB with a solid ground plane, and to keep the input and output capacitors close to the IC. Also, keep the high-current paths short and wide, and avoid vias under the IC.
Choose input capacitors with low ESR and high ripple current rating. For output capacitors, choose ones with low ESR and high capacitance. The datasheet recommends a minimum of 10uF for the input capacitor and 22uF for the output capacitor.
The TPS51367RVER is rated for operation up to 85°C ambient temperature. However, for reliable operation, it's recommended to keep the ambient temperature below 70°C to ensure the junction temperature stays within the recommended range.
To ensure stability, follow the recommended component values and PCB layout. Also, make sure the input and output capacitors are properly decoupled, and the feedback network is properly compensated. TI also recommends adding a small capacitor (e.g., 10nF) between the FB pin and GND to improve stability.
The recommended input voltage range for optimal performance is 2.7V to 5.5V. Operating outside this range may affect the device's performance and efficiency.
TPS51367RVER datasheet
by Texas Instruments
