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STK672-080 데이터시트(PDF) 6 Page - Sanyo Semicon Device

부품명 STK672-080
상세설명  Stepping Motor Driver (Sine Wave Drive) Output Current : 2.8 A (No Heat Sink)
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제조업체  SANYO [Sanyo Semicon Device]
홈페이지  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

STK672-080 데이터시트(HTML) 6 Page - Sanyo Semicon Device

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No. 6507-6/17
STK672-080
7
5
A
Two-phase stepping motor
AB
6
14
14
8
14
14
9
14
14
12
15
11
13
10
14
+
+
VCC2=5V
VCC2=5V
SG
PG
Vref
Ro1
Ro2
VCC2=5V
CLK
ENABLE
CBW
Vf
≈ 0.3V
RESET
MoI
VCC1=10V to 45V
STK672-080
A13261
B
BB
RoX
4
3
2
1
Ioave
IOL IOH
0A
Motor current waveform
A13262
Simplified power-on reset circuit
(This circuit cannot be used to detect
drops in the power-supply voltage.)
A value of about 100
Ω is recommended for
RO2 to minimize the influence of the Vref
pin internal impedance, which is 6 k
Ω.
ROX: The input impedance is 6 kΩ ±30%.
Power-on reset
The application must perform a power-on reset operation when VCC2 power is first applied to this hybrid IC.
Application circuit that used 2W1-2 phase excitation (microstepping operation) mode.
Setting the Motor Current
The motor current IOH is set by the Vref voltage on the hybrid IC pin 7. The following formula gives the relationship
between IOH and Vref.
ROX = (RO2 × 6 kΩ) ÷ (RO2 + 6 kΩ) ·············(1)
Vref = VCC2 × ROX ÷ (RO1 + ROX) ··············(2)
1
Vref
IOH = — × —— ·············································(3)
k
RS
K: 4.7 (Voltage division ratio), Rs: 0.15
Ω (The hybrid IC’s internal current detection resistor (precision: ±3%)
Applications can use motor currents from the current (0.05 to 0.1 A) set by the duty of the frequency set by the oscillator
up to the limit of the allowable operating range, IOH = 2.8 A
Function Table
M2
0
0
1
1
M1
0
1
0
1
Phase switching clock edge timing
M3
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
Forward
Reverse
CWB
0
1
ENABLE
Motor current is cut off when low
RESET
Active low


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