Sanyo STK673-010 Specifications
Ordering number: EN 5708
ThybridICk Film Hybrid IC
STK673-010
3-Phase Stepping Motor Driver (sine wave drive)
Output Current 2.4A
Overview
STK673-010 is a 3-phase stepping motor driver hybrid IC
with built-in microstep controller having a bipolar constant current PWM system, in which a power MOSFET is
employed at an output stage.
It includes a 3-phase distributed controller for a 3-phase
stepping motor to realize a simple configuration of the
motor driver circuit.
The number of motor revolution can be controlled by the
frequency of external clock input. 2, 2-3, W2-3 and 2W23-phase excitation modes are available. The basic step
angle of the stepping motor can be separated as much as
one-eighth 2-3-phase to 2W2-3-phase excitation mode
control quasi-sine wave current, thereby realizing low
vibration and low noise.
Applications
• As a 3-phase stepping motor driver for transmission and
reception in a facsimile.
• As a 3-phase stepping motor driver for feeding paper
feed or for an optical system in a copying machine.
• Industrial machines or products employing 3-phase
stepping motor driving.
• An MOI output terminal which outputs 1 pulse per 1
cycle of phase current.
• A CW/CCW terminal which switches the rotational
direction.
• A Hold terminal which temporarily holds the motor in a
state where the phase current is conducted.
• An Enable terminal which can forcibly turns OFF a
MOSFET of a 6 output driving element in normal operation
• Schmitt inputs with built-in pull-up resistor (20 k Ω typ)
• Motor current can be set by changing the voltage of the
Vref terminal (0.63V per 1A, dealing as much as 0 to
1/2V
• The clock input for controlling the number of motor
revolution lies in a range of 0 to 50kHz.
• Supply voltage: V
• A built-in current detection resistor (0.227 Ω )
• A motor current during revolution can deal with as high
as 2.4A at Tc = 105 ° C and as high as 4A at Tc = 50 ° C
or lower.
2 (4A)).
CC
1 = 16 to 30V, V
CC
2 = 5.0V ± 5%
CC
Package Dimensions
unit: mm
4130
Features
• Number of motor revolution can be controlled by the
frequency of external clock input.
• 4 types of modes, i.e., 2, 2-3, W2-3 and 2W2-3-phase
excitations, are available which can be selected based
on rising of clock signals, by switching Highs and Lows
of Mode A and Mode B terminals.
• Setting a Mode C terminal Low allows an excitation
mode that is based on rising and falling of a clock signal. By setting the Mode C terminal Low, phases that
are set only by Mode A and Mode B can be changed to
other phases as follows without changing the number of
motor revolution: 2-phase may be switched to 2-3phase; 2-3-phase may be switched to W2-3-phase; and
W2-3-phase may be switched to 2W2-3-phase.
• Phase is maintained even when the excitation mode is
changed
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
[STK673-010]
N2997HA (ID) No. 5708—1/16
Specifications
−
−
°
°
−
° C
µ
µ
STK673-010
Maximum Ratings
at Tc = 25 ° C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage 1 V
Maximum supply voltage 2 V
Input voltage V
Phase output current I
1 max V
CC
2 max No signal
CC
max Logic input block
IN
max V
O
2 = 0V 36 V
CC
2=5V, Clock ≥ 100Hz 4.0 A
CC
0.3 to +7.0 V
0.3 to +7.0 V
Operating substrate temperature Tc max 105
Junction temperature Tj max 150
Storage temperature Tstg
Allowable Operating Ranges
at Ta = 25 ° C
40 to +125
Parameter Symbol Conditions Ratings Unit
Operating supply voltage 1 V
Operating supply voltage 2 V
Input voltage V
Phase output current 1 I
Phase output current 2 I
1 With signal 16 to 30 V
CC
2 With signal 5.0V ± 5% V
CC
0 to V
IH
1 Without heat sink 1.7 A
O
2 Tc = 105 ° C 2.4 A
O
2V
CC
Clock frequency Clock pin 11 input frequency 0 to 50 kHz
C
C
Electrical Characteristics
at Tc = 25 ° C, V
1 = 24V, V
CC
CC
2 = 5V
Parameter Symbol Conditions min typ max Unit
V
2 supply current I
CC
Enable=Low – 6.1 12 mA
CCO
each phase R/L=2 Ω /6mH
Effective output current I
FET diode forward voltage V
Output saturation voltage V
Output leakage current I
Input high voltage V
Input low voltage V
Input current I
Vref input voltage V
Vref input current I
MOI output high voltage V
MOI output low voltage V
2W 2-3-phase excitation
o ave
Vref = 0.61V
I
= 1A (R
df
R
sat
R
OL
9 terminals, Pins 11 to 18, 22 4.0 – – V
IH
9 terminals, Pins 11 to 18, 22 – – 1.0 V
IL
Pins 11 to 18 pin = GND level
IL
pullup resistance 20k Ω (typ.)
Pin 10 0 – V
rH
Pin 10, pin 10 = 2.5V
r
Internal resistance 40 k Ω (typ.)
Pin 20, pin 20 to 19 = 820 Ω
OH
Pin 20, pin 21 to 20 = 1.6 k Ω
OL
=23 Ω ) – 1.0 1.6 V
f
L
=23 Ω
L
=23 Ω
L
0.62 0.69 0.76 Arms
– 0.45 0.56 V
– – 0.1 mA
115 250 550
440 625 810
2.5––V
– – 0.4 V
2/2 V
CC
PWM frequency Fc – 63 – kHz
Note: Constant voltage supply is used.
A
A
No. 5708—2/16
STK673-010
Electrical Characteristics 2
at Tc = 25 ° C, V
1 = 24V, V
CC
CC
2 = 5V
Current division ratio at phase current of 1/4 electrorotation, in each excitation mode (unit = %, typ.) Number of current
division is put in parentheses
Current division
1/96
2/96
3/96
4/96
5/96
6/96
7/96
8/96
9/96
10/96
11/96
12/96
13/96
14/96
15/96
16/96
17/96
18/96
19/96
20/96
21/96
22/96
23/96
24/96 100
2 phase
(1)
0
100
2-3 phase
(3)
0
50
87
100
W2-3 phase
(6)
0
26
50
71
87
96
100
2W2-3 phase
(12)
0
13
26
38
50
61
71
79
87
92
96
98
Note: Constant voltage supply is used as power supply.
Electrical Characteristic 2 represents design values. Measurement for controlling the standard value is not conducted.
No. 5708—3/16
Equivalent Block Diagram
STK673-010
No. 5708—4/16
Sample Application Circuit
STK673-010
2 ×
±
Set Equation of Output Current I
I
peak = Vref ÷ K K = 0.63 (V/A)
o
where Vref ≤ 0.5 × V
Vref = V
CC
2
CC
Rox ÷ (R01 + Rox)
Peak Value
O
Rox = (R02 × 4.0 k Ω ) ÷ (R02 + 4.0k Ω )
• R02 is preferably set to be 100 Ω in order to minimize
the effect of the internal impedance (4.0k Ω ± 30%) of
STK637-010
• For noise reduction in 5V system, put the GND side
of bypass capacitor (220 µ F) of V
1 (shown in a
CC
thick line in the above Sample Application Circuit) in
the vicinity of pins 27 and 28 of the hybrid IC.
• Set the capacitance value of the bypass capacitor C1
such that a ripple current of a capacitance, which varies in accordance with the increase of motor current,
lies in an allowable range.
• K in the above-mentioned set equation varies within
5 to ± 10% depending on the inductance L and resistance value R of the used motor. Check the peak
value setting of I
upon actual setting.
o
No. 5708—5/16
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