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 resistance and capacitor.

Power dissipation is minimised using low-output resistance (0.25Ω) p and n-channel mosfet output bridge transistors – integrated using a BiCD process – allowing it to fit in a 9 x 9 x 0.9mm 0.5mm pitch QFN64.