STK673-011-E Datasheet, PDF (1/15 Pages) Sanyo Semicon Device – Thick-Film Hybrid IC 3-Phase Stepping Motor Driver

Ordering number : ENA1137B
STK673-011-E
Thick-Film Hybrid IC
3-Phase Stepping Motor Driver
Overview
The STK673-011-E is a 3-phase stepping motor driver hybrid IC with built-in microstep controller having a bipolar
constant current PWM system, in which a power MOSFET is employed at an output stage.
It includes a 3-phase distributed controller for a 3-phase stepping motor to realize a simple configuration of the motor
driver circuit.
The number of motor revolution can be controlled by the frequency of external clock input. 2, 2-3, W2-3 and 2W2-3-
phase excitation modes are available. The basic step angle of the stepping motor can be separated as much as one-eighth
2-3-phase to 2W2-3-phase excitation mode control quasi-sine wave current, thereby realizing low vibration and low
noise.
Applications
• As a 3-phase stepping motor driver for transmission and reception in a facsimile.
• As a 3-phase stepping motor driver for feeding paper feed or for an optical system in a copying machine.
• Industrial machines or products employing 3-phase stepping motor driving.
Features
• Number of motor revolution can be controlled by the frequency of external clock input.
• 4 types of modes, i.e., 2, 2-3, W2-3 and 2W2-3-phase excitations, are available which can be selected based on rising
of clock signals, by switching highs and lows of Mode A and Mode B terminals.
• Setting a Mode C terminal low allows an excitation mode that is based on rising and falling of a clock signal.
By setting the Mode C terminal low, phases that are set only by Mode A and Mode B can be changed to other phases
as follows without changing the number of motor revolution: 2-phase may be switched to 2-3-phase; 2-3-phase may
be switched to W2-3-phase; and W2-3-phase may be switched to 2W2-3-phase.
• Phase is maintained even when the excitation mode is changed.
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62911HKPC 5-7063/42011HKIM/71608HKIM No.A1137-1/15