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STK673-010

3-Phase Stepping Motor Driver (sine wave drive) Output Current 2.4A

SANYO -> Panasonic 

Ordering number: EN 5708

ThybridICk Film Hybrid IC

STK673-010

3-Phase Stepping Motor Driver (sine wave drive)

Output Current 2.4A

Overview

STK673-010 is a 3-phase stepping motor driver hybrid IC

with built-in microstep controller having a bipolar con-

stant 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.

• An MOI output terminal which outputs 1 pulse per 1

cycle of phase current.

• A CW/CCW terminal which switches the rotational

direction.

• A Hold terminal which temporarily holds the motor in a

state where the phase current is conducted.

• An Enable terminal which can forcibly turns OFF a

MOSFET of a 6 output driving element in normal oper-

ation

• Schmitt inputs with built-in pull-up resistor (20 kΩ typ)

• Motor current can be set by changing the voltage of the

Vref terminal (0.63V per 1A, dealing as much as 0 to

1/2VCC2 (4A)).

• The clock input for controlling the number of motor

revolution lies in a range of 0 to 50kHz.

• Supply voltage: VCC1 = 16 to 30V, VCC2 = 5.0V±5%

• A built-in current detection resistor (0.227Ω)

• A motor current during revolution can deal with as high

as 2.4A at Tc = 105°C and as high as 4A at Tc = 50°C

or lower.

Package Dimensions

unit: mm

4130

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 sig-

nal. 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

[STK673-010]

SANYO Electric Co., Ltd. Semiconductor Business Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

N2997HA (ID) No. 5708—1/16

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