SKT672-080-E - ON Semiconductor

SKT672-080-E Stepping Motor Driver

External Excitation Chopper Drive Block Description VCC1 IOFF L2 D1 ION Enable φA (control signal) Current divider L1 Divider CR oscillator 800kHz 45kHz S MOSFET AND Q Latch circuit R Noise filter Vref A=1 – + Rs Driver Block Basic Circuit Structure A13263 Since this hybrid IC adopts an external excitation method, no external oscillator circui.

Features

• Can implement stepping motor drive systems simply by providing a DC power supply and a clock pulse generator.
• One of five drive types can be selected with the drive mode settings (M1, M2, and M3) 1) 2 phase excitation drive 2) 1-2 phase excitation drive 3) W1-2 phase excitation drive 4) 2W1-2 phase excitation drive 5) 4W1-2 phase excitation drive
• Phase retention even if excitation is switched.
• Provides the MOI phase origin monitor pin.
• The CLK input counter block can be selected to be one of the following by the high/low setting of the M3 input pin. 1) Rising.