Sanken's STA7130MPR series are driver ICs for driving unipolar-mode, 2-phase stepper motors. These drivers are designed for low-voltage (up to 44 V output) motor applications. The series provides a range of maximum output currents from 1 to 2 A in pin-compatible proprietary (model STA) packages, allowing system optimization with reduced printed circuit board requirements. The logic section provides four modes of operation; forward and reverse normal drive rotation, outputs-off free spin (coast), and electronic braking.
The innovative multi-chip internal structure separates the main logic IC (MIC) from the four-output N-channel power MOSFETs. This results in lower-thermal resistance and greater-efficiency. PWM control allows constant-current control of output while reducing heat generation and power losses by synchronous rectification. The rich set of protection features helps to realize low-component counts and high-performance-to-cost power management. STA7130MPR Series: 2-Phase Stepper Motor Unipolar Driver ICs