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TPL7407L: TPL7407L drive 12v four-phase stepper motor often appears drive pin is shorted

Part Number: TPL7407L

Dear all,

Our customer faces a question as following:

TPL7407L drive 12v four-phase stepping motor often has a drive pin broken through short circuit (performance phenomenon is short circuit of output pin to ground, a small part of short circuit to VCC), stepper motor 5-wire 4-phase drive current 400ma, frequency 400pps. The drawings are the same as those provided by the TPL7407L.

Please help us to solve it, thanks!