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PDF SKT672-060-E Data sheet ( Hoja de datos )
| Número de pieza | SKT672-060-E | |
| Descripción | Stepping Motor Driver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Ordering number : EN7441B
STK672-060-E
Thick-Film Hybrid IC
Unipolar Constant-current Chopper (external excitation
PWM) Circuit with Built-in Microstepping Controller
Stepping Motor Driver (sine wave drive)
Output Current 1.2A (no heat sink*)
http://onsemi.com
Overview
The STK672-060-E is a stepping motor driver hybrid IC that uses power MOSFETs in the output stage. It includes a
built-in microstepping controller and is based on a unipolar constant-current PWM system. The STK672-060-E
supports application simplification and standardization by providing a built-in 4 phase distribution stepping motor
controller. It supports five excitation methods: 2 phase, 1-2 phase, W1-2 phase, 2W1-2 phase, and 4W1-2 phase
excitations, and can provide control of the basic stepping angle of the stepping motor divided into 1/16 step units. It also
allows the motor speed to be controlled with only a clock signal.
The use of this hybrid IC allows designers to implement systems that provide high motor torques, low vibration levels,
low noise, fast response, and high-efficiency drive.
Applications
• Facsimile stepping motor drive (send and receive)
• Paper feed and optical system stepping motor drive in copiers
• Laser printer drum drive
• Printer carriage stepping motor drive
• X-Y plotter pen drive
• Other stepping motor applications
Note*: Conditions: VCC1 = 24V, IOH = 1.2A, 2W1-2 excitation mode.
Semiconductor Components Industries, LLC, 2013
June, 2013
61108HKIM/22004TN(OT) No.7441-1/19
1 page  
Test Circuit Diagrams
Vsat
VCC2
Start
Vref=2.5V
7
14 6 A
5A
9 2B
10 1 B
STK672-060-E
8
VCC2
+ 16
22
4
3
STK672-060-E
VCC1
V
ITF02265
Vdf
7
6A
5A
2B
1B
STK672-060-E
4
3
22
V
A
ITF02266
IIH, IIL
IIH
A
IIL
VCC2
M1 9
7
M2 10
M3 11
M4 12
M5 13
CLK
CWB
14 STK672-060-E
15
RESET 16
RETURN 17
ENABLE 18
Vref 8
22
Ioave, ICC, fc
VCC2
A
Start
Vref=1.69V 0V
5V
Low when
measuring ICC
0V
VCC2
7
14 6 A
9 2A
10
5B
1B
8 STK672-060-E
18
+ 16
22
ITF02267
VCC1
a ba b
SW1
SW2
VCC1
A
ITF02268
When measuring Ioave: With SW1 set to ‘b’, Vref = 1.69V
When measuring fc: With SW1 set to ‘a’, Vref = 0V
When measuring ICC: Set ENABLE low
No.7441-5/19
5 Page 
Output Pin Functions
Pin No.
19
20, 21
Symbol
MOI
MO1, MO2
STK672-060-E
Function
Phase excitation origin monitor
Phase excitation state monitor
Pin circuit type
Standard CMOS structure
Standard CMOS structure
Output Signal Functions and Timing
• A, A, B, and B (Motor phase excitation outputs)
1) Function:
- In the 4 phase and 2 phase excitation modes, a 3.75μs (typical) interval is set up between the A and A and B and
B output signal transition times.
• MO1, MO2, and MOI (Phase excitation state monitors)
1) Pin circuit type: Standard CMOS structure
1) Function:
- Output of the current phase excitation output state.
Phase coordinate
Phase A
Phase B
Phase A
Phase B
MO1 1 0 0 1
MO2 0 1 0 1
MOI outputs a 0 when each phase is at the origin, and outputs a 1 otherwise.
• Current division ratios set by M3, M4, and M5 ········· Values provided for reference purposes.
Mode
Circular
1
2
3
Setting
M3 = 0
M3 = 1
M4 = 1
M5 = 1
M4 = 0
M5 = 0
M4 = 1
M5 = 0
M4 = 1
M5 = 1
Units
Number of steps
15 16 16 15
1/16
2W1-2
21
25
24
20
1/8 2/16
31 34 33 28
3/16
2W1-2
40
44
41
38
2/8 4/16
47 50 49 44
5/16
2W1-2
55
59
56
53
3/8 6/16
Current
63 67 63 60
7/16
division
4W1-2
%
ratio
2W1-2
71
75
70
67
4/8 8/16
76 81 76 73
9/16
2W1-2
83
87
84
81
5/8 10/16
87 92 88 84
11/16
2W1-2
92
95
95
91
6/8 12/16
96 98 98 93
13/16
2W1-2
100
100
100
100
7/8 14/16
[Load conditions]
VCC1 = 24V, VCC2 = 5V, R/L = 3.5/3.8mH
No.7441-11/19
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet SKT672-060-E.PDF ] | |
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