STK673-010-E屬于集成電路（IC）的電機(jī)驅(qū)動(dòng)器控制器。由安森美半導(dǎo)體制造生產(chǎn)的STK673-010-E電機(jī)驅(qū)動(dòng)器，控制器產(chǎn)品屬于電機(jī)驅(qū)動(dòng)器和控制器電源管理集成電路 (PMIC) 系列，可用于控制或操作從某電源施加到電機(jī)或相關(guān)機(jī)電執(zhí)行器的電源。所實(shí)現(xiàn)的具體功能和特性集根據(jù)預(yù)期負(fù)載和預(yù)期應(yīng)用的特性有很大差異，范圍從用于有刷電機(jī)的簡單開環(huán)速度控制到基于步進(jìn)電機(jī)的高級閉環(huán)運(yùn)動(dòng)控制。

Overview

The STK673-010-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.

特性 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.

? 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 operation.

? Schmitt inputs with built-in pull-up resistor (20kΩ 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.

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.