Other Parts Discussed in Thread: TAS5825M
Hi,
What is the function of loop bandwidth settings?
With high bandwidth settings (eg. 175KHz), does it means the feedback is faster?
Does it make AGL and Clipper perform faster?
What are the trade-off?
<Design Background and Problem Encountered>
Our design draw power from USB port which supposed to drive 1.8Wx2 via TAS5805M to 4 ohm speakers.
We are facing surge current issue on different PC's USB port when playback audio at 100% PC volume,
Some PC just gave higher distortion, but some PC gave ticking or cracking noise.
We notice that ticking or cracking noise happened when USB VBUS dipped close to 4.5V at the USB port.
The PVDD will drop further by 0.20~0.25V.
When PVDD dropped too low, TAS5805M seem to cut-off audio out momentary resulted in ticking or cracking noise.
We are trying to reduce the surge current via AGL, Clipper and DRC.