Thanks you for the important notification about the problems of the L6599. I cant find the errata of L6599. Can you help me for finding this problems list?as i know, st developed improved version of this controller. its 6599A. maybe try to read errata of 6599 to locate the problem?
Did you use a safety transformer for the oscilloscope or the inverter input? In any case, connecting the probe ground to the hot push-pull node will load the circuit with a large parasitic capacitance and disturb the waveforms.I connect the ground lead of the probe to the source of the high side mosfet and the other lead to the gate.
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