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STK672-050-E Datasheet(PDF) 10 Page - Sanyo Semicon Device

Part No. STK672-050-E
Description  Stepping Motor Driver (sine wave drive) Output Current 3.0A (no heat sink*)
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

STK672-050-E Datasheet(HTML) 10 Page - Sanyo Semicon Device

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STK672-050-E
No.5228-10/19
• M1, M2, and M3 (Excitation mode and CLK input edge timing selection)
1) Pin circuit type: Built-in pull-up resistor (20k
Ω, typical) CMOS Schmitt trigger structure
2) Function:
M2
0
0
1
1
M1
M3
0
1
0
1
Phase switching clock edge timing
1
2 phase excitation
1-2 phase excitation
W1-2 phase excitation
2W1-2 phase excitation
Rising edge only
0
1-2 phase excitation
W1-2 phase excitation
2W1-2 phase excitation
4W1-2 phase excitation
Rising and falling edges
3) Valid mode setting timing: Applications must not change the mode in the period 5
μs before or after a CLK signal
rising or falling edge.
Mode Setting Acquisition Timing
• M4 and M5 (Microstepping mode rotation vector locus setting)
M4
1
0
1
0
M5
1
0
0
1
Mode
Circular
1
2
3
See page 10 for details on the current division ratio.
• RESET (Resets all parts of the system.)
1) Pin circuit type: Built-in pull-up resistor (20k
Ω, typical) CMOS Schmitt trigger structure
2) Function:
- All circuit states are set to their initial values by setting the RESET pin low. (Note that the pulse width must be
at least 10
μs.)
At this time, the A and B phases are set to their origin, regardless of the excitation mode. The output current
goes to about 71% after the reset is released.
3) Notes: When power is first applied to this hybrid IC, Vref must be established by applying a reset. Applications
must apply a power on reset when the VCC2 power supply is first applied.
• Vref (Sets the current level used as the reference for constant-current detection.)
1) Pin circuit type: Analog input structure
2) Function:
- Constant-current control can be applied to the motor excitation current at 100% of the rated current by applying a
voltage less than the control system power supply voltage VCC2 minus 2.5V.
- Applications can apply constant-current control proportional to the Vref voltage, with this value of 2.5V as the
upper limit.
Mode switching timing
Excitation counter up/down
CLK input
System clock
Mode setting
M1 to M3
Mode switching clock
Hybrid IC internal setting state
Phase excitation clock
A06851
1
Phase B
Circular
Phase A
2
3
ITF02399


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