Hi,
Is there anybody here who can get me out of the trouble brought by TAS5630(Package DKD)?
The Amp board works as the configuration of PBTL BD mode.I'll describe the detailed problem as follows:
It has been powered by a 50V switching power supply which can output 600W power.
I use another alternative Single-Ended to Differential chip with the gain setting 1.
I've tested the Amp board by adjusting the amplitude of the 1KHz sin wave input signal.
At the same time,I just monitored the output wave with the oscilliscope on the condition of no load.
Once the value reached as much as 2V RMS or more than 2V , the output sin wave disappeared correspondingly.
At the same time, the output wave almost keeped unclipping.
It was strange that SD and OTW pins stayed 3.2V all the time after power up.
Besides that, the OSC pin stopped outputting wave and the output voltage only fell as low as 0.44V .
The phenomenon seems to result from chip protection itself. During the further debugging, the voltage from VDD keeped as 12V, the temp on the heat slug
never reached more than 40 centigrades,both of the over current and over load protection can be exclueded since no load condition.
Now I am wondering the Clipping protection but I've not found the reasonable explanation.
Hope that the problem can be solved ASAP.
Thanks for your time.