Details, datasheet, quote on part number: STK673-010
PartSTK673-010
CategoryInterface and Interconnect
Description3-phase Stepping Motor Driver
CompanySanyo Semiconductor Corporation
DatasheetDownload STK673-010 datasheet
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Features, Applications

STK673-010 3-Phase Stepping Motor Driver (sine wave drive) Output Current 2.4A

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. 2-3, W2-3 and 2W23-phase excitation modes are available. The basic step angle of the stepping motor can be separated as much as one-eighth to 2W2-3-phase excitation mode control quasi-sine wave current, thereby realizing low vibration and low noise.

Applications

a 3-phase stepping motor driver for transmission and reception in a facsimile. 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 a 6 output driving element in normal operation Schmitt inputs with built-in pull-up resistor (20 k typ) Motor current can be set by changing the voltage of the Vref terminal (0.63V per 1A, dealing as much 1/2VCC2 (4A)). The clock input for controlling the number of motor revolution lies in a range to 50kHz. Supply voltage: 5.0V5% A built-in current detection resistor (0.227) A motor current during revolution can deal with as high = 105C and as high 50C or lower.

Features

Number of motor revolution can be controlled by the frequency of external clock input. 4 types of modes, i.e., 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 2-3phase; 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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Specifications

Parameter Maximum supply voltage 1 Maximum supply voltage 2 Input voltage Phase output current Operating substrate temperature Junction temperature Storage temperature Symbol VCC1 max VCC2 max VIN max IO max Tc max Tj max Tstg 0V No signal Logic input block VCC2=5V, Clock100Hz Conditions Ratings to +125 Unit C

Parameter Operating supply voltage 1 Operating supply voltage 2 Input voltage Phase output current 1 Phase output current 2 Clock frequency Symbol VCC1 VCC2 VIH I O2 Clock Without heat sink = 105C pin 11 input frequency With signal With signal Conditions Ratings to 50 Unit kHz

Parameter VCC2 supply current Effective output current FET diode forward voltage Output saturation voltage Output leakage current Input high voltage Input low voltage Input current Vref input voltage Vref input current MOI output high voltage MOI output low voltage PWM frequency Note: Constant voltage supply is used. Symbol ICCO Io ave Vdf Vsat IOL VIH VIL IIL VrH Ir VOH VOL Fc Enable=Low each phase 2W 2-3-phase excitation Vref = 1A (RL =23 9 terminals, Pins 22 9 terminals, Pins 18, 22 Pins to 18 pin = GND level pullup resistance 20k (typ.) Pin 10 Pin 10, pin = 2.5V Internal resistance 40 k (typ.) Pin 20, pin = 820 Pin 20, pin 1.6 k Conditions min typ max VCC2/2 Unit mA Arms A V kHz

Current division ratio at phase current of 1/4 electrorotation, in each excitation mode (unit = typ.) Number of current division is put in parentheses

Constant voltage supply is used as power supply. Electrical Characteristic 2 represents design values. Measurement for controlling the standard value is not conducted.


 

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