A good PCB layout for the TAS5731PHPR involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the power supply. Additionally, using a shielded inductor and keeping the high-current paths short can help minimize EMI.
To optimize thermal performance, ensure good airflow around the device, use a heat sink if possible, and avoid blocking the thermal pads on the package. Also, minimize the power dissipation by optimizing the output filter design and using the lowest possible supply voltage.
A recommended input filter design for the TAS5731PHPR includes a pi-filter (C-L-C) or a T-filter (L-C-L) with a common-mode choke and X-capacitors. The filter values should be chosen to attenuate frequencies above 30 MHz and meet the CISPR 25 Class 5 requirements.
To troubleshoot issues with the TAS5731PHPR, start by checking the power supply voltage, output filter design, and PCB layout. Use an oscilloscope to measure the output voltage and current, and check for signs of oscillation or instability. Also, verify that the device is properly configured and that the input signals are correct.
When designing a power supply for the TAS5731PHPR, consider the output voltage and current requirements, as well as the power supply's voltage regulation, noise tolerance, and transient response. Ensure the power supply can provide a stable voltage and sufficient current to the device, and consider using a low-dropout regulator (LDO) or a switching regulator with a high power supply rejection ratio (PSRR).
TAS5731PHPR datasheet
by Texas Instruments
