ST Industrial 3D printer
【產品特性】Integrated stepper motor driver for bipolar stepper motors with microstepping and programmable current profile.
■ Two full bridges for max. 1.3 A load (RDSON = 500 mΩ)
■ Programmable current waveform with look-up table: 9 entries with 5bit resolution
■ Current regulation by integrated PWM controller and internal current sensing
■ Programmable stepping mode: Full, Half, Mini and Microstepping
■ Programmable slew rate for EMC and power dissipation optimisation
■ Programmable Fast-, Slow-, Mixed-and AutoDecay Mode
■ Full-Scale Current programmable with 3bit resolution
■ Very low current consumption in standby mode IS < 3µA, typ. Tj ≤ 85 °C
■ All outputs short circuit protected with Openload, Overloadcurrent, Temperature Warning and Thermal Shutdown
■ The PWM signal of the internal PWM controller is available as digital output.
■ All parameters guaranteed for 7V < Vs < 20V
【產品應用】Stepper motor driver for bipolar stepper motors in automotive applications like light levelling,
Bending light and Throttle control.
【文字介紹】The L9942 is an integrated stepper motor driver
for bipolar stepper motors with microstepping and programmable current profile look-up-table to allow a flexible adaptation of the stepper motor characteristics and intended operating conditions.
It is possible to use different current profiles
depending on target criteria: audible noise,
vibrations, rotation speed or torque.