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MC33880: output voltage in disabled state

Question asked by Sepp Fröhlich on Jun 5, 2017
Latest reply on Jun 15, 2017 by Tomas Vaverka

I am using the MC33880’s outputs as high-side switches to drive solenoids (2 watts each).
The solenoids are connected just like in the High-side Drive example (output S1/D1) of Figure 1. 33879 simplified application diagram of http://cache.freescale.com/files/analog/doc/data_sheet/MC33879.pdf (in the data sheet of the MC33880 High- and Low-side seem to be mixed up).

VPWR is 24 Volts.
Enabling these outputs works fine, but in disabled state the output voltage won’t drop below 4 volts and the solenoids won’t deenergize.
The solenoids will deenergize only below 1.5 volts.

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