STK672-060-E Ver la hoja de datos (PDF) - SANYO -> Panasonic
Número de pieza
componentes Descripción
fabricante
STK672-060-E
SANYO -> Panasonic
STK672-060-E Datasheet PDF : 19 Pages
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STK672-060-E
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.
VCC2=5V
VCC1=10V to 45V
Simple power-on reset circuit
(This circuit cannot be used to
detect drops in the supply voltage.)
VCC2=5V
VF 0.3V
CLK
ENABLE
1kΩ
+ RESET
RET
MOI
MO1
MO2
Two-phase
stepping motor
7
9
6A
10
5A
11
2B
+
12
1B
143
15
SG
14 STK672-060-E 3
PG
18
16
17
19
20
21
22
4
VCC2=5V
RoX
8
Ro1
Vref
Ro2
A value of about 100Ω is
recommended for Ro2 to minimize
the influence of the 6kΩ internal
resistance of the Vref pin.
RoX: Input impedance of 6kΩ ±30%
ITF02269
Setting the Motor Current
The motor current IOH is set by the Vref voltage on the hybrid IC pin 8. The following formula gives the relationship
between IOH and Vref.
RoX = (Ro2 × 6kΩ) ÷ (Ro2 + 6kΩ)
(1)
Vref = VCC2 × RoX ÷ (Ro1 + RoX)
(2)
IOH =
1×
K
Vref
Rs
(3)
K: 7.66 (voltage divider ratio),
Rs: 0.22Ω (This is the hybrid IC's internal current detection resistor. It has a tolerance of ±3%.)
Applications can use motor currents from the current (0.05 to 0.1A) set by the duty of the frequency set by the oscillator
up to the limit of the allowable operating range, IOH = 1.2A
0A
Function Table
M2
0
M1
0
M3
1
2 phase excitation
0
1-2 phase excitation
Motor current waveform
Ioave IOL IOH
A13262
0
1
1
Phase switching clock edge timing
1
0
1
1-2 phase excitation
W1-2 phase excitation
W1-2 phase excitation 2W1-2 phase excitation
2W1-2 phase excitation 4W1-2 phase excitation
Rising edge only
Rising and falling edges
CWB
Forward
0
Reverse
1
ENABLE
RESET
Motor current is cut off when low
Active low
A
A
B
B
MO1
1
0
0
1
MO2
0
0
1
1
No.7441-6/19
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