Bipolar Stepper Motor Driver with Stall Detection | E523.39 (*Driver IC)

E523.39 is a high-precision automotive bipolar stepper motor driver for up to Tjunc.=170°C and phase currents up to 1.2A, with SPI interface and <10μA sleep current. Very low acoustical noise emission features are down to 1/32 micro-stepping and 1,5+8 bit current resolution. With the custom waveform feature it is possible to increase motor power and maximum speed. Motor run is possible down to 5V. Low BOM cost can be realized with the set of EMC parameters and an ESD resistivity of up to 8kV(HBM). The unique integrated "Stall-Detection" module performs the complete stall-analysis. No calculations with external controllers are necessary. Influences from gearboxes can be compensated by adjusting IC parameters. An additional true position indicator offers an improved position information after stall situations. The integrated "Fail-Current-Detection" detects even small fail-currents in the motor or wiring system. For increasing the sensitivity, it is possible, to compensate system asymmetries end-of-line. E523.39 supports an "Adaptive Holding Torque" functionality, which is able to significantly reduce the lifetime holding current energy consumption and the system CO2 emission. E523.39 also supports an "Adaptive Run Current" functionality, which reduces the power dissipation in the motor, the motor heat up and so leads to a higher motor peak torque, when it is really needed.