Original question:
Hi, I am using TPA3255 in PBTL Configuration. The output PWM have a big shock in its rising edge, how did it come about and how to deal with it ? Thanks!
The Schematic diagram and OUT_A signal detect are as below.
Hi , I add zobel circuit, it did work.The input of TPA3255 is float and with reset pin enabled. Also , it is no load output when testing. Test point is Out_A Pin.
The picture above is test without zobel circuit.
The picture above is test with zobel circuit( R=10ohm, c=200nF)
The shock reduces with using the zobel cicuirt, and I increase the capacity to 100nF, the P-P of shock decreases to 6.6V. But the P-P of shock doesn't decrease with the increase of capacity. How do I adjust it if I want to eliminate the shock ? Does the zobel cicuirt affect the load response, my load is a 2.2ohm 600uH Coil.
Thanks in advance!
