Other Parts Discussed in Thread: TPS767
Need some help in troubleshooting my own ISOUSB211 board used for computer-based audio playback.
I pretty much copied TI's EVM design with all external LDOs for both sides. The only thing I changed was I omitted the ferrite beads since I don't use the DC-DC converter. A separate low-noise LPSU is used to power the peripheral side. In my application, the peripheral is digital to analog converter (DAC) for audio with USB interface.
The issue I have was after PC reboot, the connection to DAC is lost. No such issue when EVM was used.
What is wrong with my circuit?
Thank you TI.