Toshiba has introduced a bipolar driver for two-phase stepping motors up to 44V 5A that includes 1/128 micro-stepping. TB67S128FTG, as it is to be known, also supports full, half, quarter, 1/8, 1/16, 1/32 and 1/64 step operation – micro-stepping is by PWM, using sine-wave derived on-off ratios – output chopping frequency can be adjusted by external ...
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