Tool/software:
Hello,
I have been using the TAS6584. I have noticed that it appears that under high duty cycle conditions, I lose the ability to switch my output at all. The waveform looks like it can miss several cycles in a row. I have been wanting to increase the size of my boot-strap capacitor because of this, but I do not want to over-load the device somehow.
In the image:
1. Red = Speaker Output.
2. Green = boot strap capacitor voltage (ignore the high frequency voltage spikes)
3. Blue = Pre-Inductor Switching Waveform.
Is there any way to keep this from happening? Pulse Injection makes no difference. 1SPW vs. BD makes no difference. Also, 1uF boot strap doesn't fix my problem either, Is 1uF already too large? If not, what is the largest recommended boot-strap size? It seems like the switching waveform always starts to look like this right before the chip enters into protection.
Thank you again,
Levi
