PDF STK672-040 Data sheet ( Hoja de datos )

Número de pieza	STK672-040
Descripción	Microstep Operation-Supported 4-Phase Stepping Motor Driver (Io= 1.5A)
Fabricantes	Sanyo Semicon Device
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No Preview Available ! Ordering number: EN 5227A Thick Film Hybrid IC STK672-040 Microstep Operation-Supported 4-Phase Stepping Motor Driver (IO = 1.5A) Overview Package Dimensions The STK672-040 is a unipolar constant-current chopper- type externally-excited 4-phase stepping motor driver hybrid IC which uses MOSFET power devices. It has a microstep operation-supported 4-phase distributed con- troller built-in to realize a high torque, low vibration, low noise stepping motor driver using a simple control circuit. unit: mm 4161 [STK672-040] Applications • Printer, copier, and X-Y plotter stepping motor drivers Features • Microstep sine-wave driver operation using only an external clock input (0.33Ω current detection resistor built-in) • Microstep drive using only an external reference voltage setting resistor • 2, 1-2, W1-2, 2W1-2, 4W1-2 phase excitation selectable using external pins • Selectable vector locus (perfect circle mode, inside 1 mode, outside 2 modes) to match motor characteristics in microstep drive state • Phase hold function during excitation switching • Schmitt trigger inputs with built-in pull-up resistor (20kΩ) • Monitor output pin enabling real-time conﬁrmation of IC excitation • The CLK and RETURN inputs provide an internal noise elimination circuit as well as CMOS Schmitt cir- cuit to prevent malfunction due to impulse noise. • 4-phase distribution switch timing selected externally to either CLK rising-edge only detection mode or both ris- ing-edge and falling-edge detection mode • ENABLE pin for excitation current cutoff, thereby reducing system current drain when driver is stopped Series Organization The following devices form a series with differing output capacity. Type No. STK672-040 STK672-050 Output current (A) 1.5 3.0 SANYO Electric Co., Ltd. Semiconductor Business Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 10997HA(ID) / 110896HA(ID) No. 5227—1/11 1 page STK672-040 Design material 1. Explanation of input pins Pin No. 14 15 17 18 9, 10, 11 12, 13 16 8 Name CLK CWB RETURN ENABLE M1, M2, M3 M4, M5 RESET Vref Function Phase switching phase Setting of rotation direction (CW/CCW) Phase origin forced return Output cut-off Setting of exciting mode Setting of vector locus System reset Setting of current value Pin format CMOS Schmitt conﬁguration with pull-down resistor CMOS Schmitt conﬁguration with pull-down resistor CMOS Schmitt conﬁguration with pull-down resistor CMOS Schmitt conﬁguration with pull-down resistor CMOS Schmitt conﬁguration with pull-down resistor CMOS Schmitt conﬁguration with pull-down resistor CMOS Schmitt conﬁguration with pull-down resistor CMOS Schmitt conﬁguration with pull-down resistor 2. Functions and timing of input signals 2-1. CLK (Phase switching clock) 1. Input frequency range sDC to 50 kHz 2. Minimum pulse width s10 µs 3. Duty s40 to 60% 4. Pin format sCMOS Schmitt containing pull-up resistor (20 kΩ typical value) 5. Noise eliminating circuit with multiple stages is contained. 6. Functions a. When the signal M3 is set to 1 or it is opened. The exciting phase moves at each step at the leading edge of the clock. b. When the signal M3 is set to 0 The exciting phase moves at each step at the leading and trailing edges of the clock. 2-2. CWB (Setting of rotation direction) 1. Pin format sCMOS Schmitt configuration containing pull-up resistor (20kΩ, typical value) 2. Function a. When the signal CWB is set to 1 It rotates clockwise. b. When the signal CWB is set to 0 It rotates counterclockwise. 3. Note sWhen the signal M3 is set to 0, the CWB input signal must not be changed at the leading edge and trailing edge of the clock input for the period of 5 µs. No. 5227—5/11 5 Page STK672-040 s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its afﬁliates, subsidiaries and distributors and all their ofﬁcers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its afﬁliates, subsidiaries and distributors or any of their ofﬁcers and employees, jointly or severally. s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of January, 1997. Speciﬁcations and information herein are subject to change without notice. No. 5227—11/11 11 Page

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