Datasheet Summary
February 1999
PBL 3771/1 Precision Stepper Motor Driver
Description
The PBL 3771/1 is a switch-mode, constant-current driver IC (chopper) with two channels, one for each winding of a two-phase stepper motor. The circuit is especially developed for use in microstepping applications in conjunction with the matching dual DAC (Digital-to-Analog Converter) PBM 3960. A plete driver system consists of these two ICs, a few passive ponents and a microprocessor for generation of the proper control and data codes required for microstepping. The PBL 3771/1 contains a clock oscillator, which is mon for both driver channels; a set of parators and flip-flops implementing the switching...