TA7289FG [TOSHIBA]
PWM STEPPING MOTOR DRIVER; PWM步进电机驱动器
| 型号： | TA7289FG |
| 厂家： | 
TOSHIBA |
| 描述： | PWM STEPPING MOTOR DRIVER |
| 文件： | 总19页 (文件大小：594K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TA7289P/F/FG
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA7289P,TA7289F/FG
PWM STEPPING MOTOR DRIVER
The TA7289P, TA7289F/FG are PWM solenoid driver designed
especially for use high efficiency stepping motor control.
It consist of 1.5A peak current drive capable output full bridge
driver, oscillation circuit for PWM switching, 4bit D−A for output
current control and TTL compatible input circuit.
FEATURES
z Wide Range of Operating Voltage
: V
Min. = 6~27 V
CC (opr.)
z High Current Capability: I Max = 1.5 A (PEAK)
O
z LS−TTL Compatible Control Inputs (IN A, IN B)
z Few External Components Required.
z Build−in 4bit DAC.
TA7289F/FG
The TA7289FG is a Pb-free product.
The TA7289P is Sn plated product including Pb.
The following conditions apply to solderability:
*Solderability
1. Use of Sn-37Pb solder bath
*solder bath temperature = 230°C
*dipping time = 5 seconds
Weight
HDIP14−P−500−2.54A : 3.00g (Typ.)
HSOP20−P−450−1.00 : 0.79g (Typ.)
*number of times = once
*use of R-type flux
2. Use of Sn-3.0Ag-0.5Cu solder bath
*solder bath temperature = 245°C
*dipping time = 5 seconds
*the number of times = once
*use of R-type flux
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TA7289P/F/FG
BLOCK DIAGRAM
TA7289P / TA7289F/FG
Note: Pin (1), (4), (6), (8), (11), (13) of TA7289F/FG are all NC (Non−connection)
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TA7289P/F/FG
PIN FUNCTION
PIN No.
PIN
SYMBOL
FUNCTIONAL DESCRIPTION
NF voltage supply input terminal
P
1
F/FG
20
V
ref
2
3
2
3
IN B
IN A
Signal input terminal
Signal input terminal
Function
4
5
C
Internal oscillation frequency input terminal
Output current detection terminal
Output B terminal
OSC
5
7
NF
6
9
OUT B
7
10
12
14
15
16
17
18
19
FIN
V
Comparator input terminal
Output A terminal
I
8
OUT A
GND
9
GND terminal
10
11
12
13
14
FIN
V
Power voltage supply terminal
D / A input terminal
CC
0
2
1
2
3
2
D / A input terminal
2
2
D / A input terminal
D / A input terminal
GND
GND terminal
Note: Pin (1), (4), (6), (8), (11), (13) of TA7289F/FG are all NC (Non−connection)
FUNCTION
IN A
IN B
OUT A
OUT B
MODE
L
H
L
L
L
OFF
H
OFF
L
STOP
CW / CCW
CCW / CW
STOP
H
H
L
H
H
OFF
OFF
INPUT CIRCUIT (IN A, IN B)
Input circuit is shown in Fig.1 IN A and IN B are TTL compatible “Low Active” type and have a hysteresis of 0.8
V Typ at T = 25°C.
j
TA7289P / TA7289F/FG
Fig. 1
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TA7289P/F/FG
D / A AND Vref CIRCUIT
TA7289P / TA7289F/FG
Fig. 2
I
DO
of current mode DAC output is proportional to multipled voltage of V (PIN (1) (or (20))) and DAC inputs.
ref
DAC inputs are all “low active” type and required input current of 300 µA MIN for each input terminal.
OSC AND COMPARATOR
TA7289P / TA7289F/FG
Fig. 3
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TA7289P/F/FG
Sawtooth OSC circuit consists of Q through Q and R through R .
1
4
1
3
R and R are voltage divider of 5 V build−in regulator.
1
2
Q is turned “off” when V is less than the voltage of 2.5 V + VBE Q + V
Q approximately equal to 3.8 V. V
3
1
4
4
BE
4
is increased by C charging of I . Q and Q are turned “ON” when V becomes V − H level.
1
4
1
2
4
4
Lower level of V (V − L) is equal to V
Q + V
Q + V
Q approximately equal to 1.5 V.
SAT 1
4
4
BE
4
BE
3
V is calculated by following equation.
4
1
C ·R
1
V = 5·(1 − e −
4
·t) .................................................(1)
3
Assuming that V = 1.5 V (t = t ) and=3.8 V (t = t ).
4
1
2
C is external capacitance connected to Pin (4) (or (5)) and R is on−chip 20 kΩ resistor.
1
3
Therefore, OSC frequency is calculated as follows.
1.5
5
t = −C ·R ·1n (1 −
) ................................................(2)
1
1
3
3.8
5
t = −C ·R ·1n (1 −
)................................................(3)
1
2
1
3
1
f
=
=
OSC
1.5
3.8
t − t
1
2
C ·(R ·1n (1 −
1
)− R ·1n (1−
))
3
3
5
5
1
=
(kHz)(Unit of C is µF)
1
21.4 C
1
ABSOLUTE MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC
SYMBOL
RATING
UNIT
V
V
30
30
CC
Supply Voltage
V
ref
V
7
IN
Reference Voltage
Output Current
V
2
I
TA7289P
1.5
I
O (MAX.)
TA7289F/FG
TA7289P
0.8
A
0.7
I
O (AVE.)
TA7289F/FG
TA7289P
0.3
2.3
Power Dissipation
PD (Note)
W
TA7289F/FG
1.0
Operating Temperature
Storage Temperature
T
−30~85
−55~150
°C
°C
opr
T
stg
Note: NO HEAT SINK
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TA7289P/F/FG
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, V = 24 V, Ta = 25°C)
CC
TEST
CIR−
CUIT
CHARACTERISTIC
SYMBOL
TEST CONDITION
CW / CCW
MIN
TYP.
MAX
UNIT
I
I
12
12
20
20
30
30
CC1
CC2
STOP
Output
: Open
CW / CCW mode,
Quiescent Current
1
mA
I
I
12
13
20
23
30
32
0
3
CC3
CC4
2 ~2 : H
CW / CCW mode,
0
3
2 ~2 : L
V
2.0
−0.4
―
―
―
7.0
0.8
―
IN (H)
Output Voltage
2
2
IN A IN B, Source type.
V
V
V
IN (L)
Input Hysteresis Width
∆V
―
0.8
IN
IN A, IN B
Source type
V
3
= 0 V
IN
I
I
―
25
35
IN1
Input Current
2
µA
0
1
2
2 , 2 , 2 , 2
Source type
V
= 0 V
IN
90
160
200
IN2
V
―
―
1.1
0.8
1.2
0.9
1.8
1.2
―
1.5
1.1
1.7
1.3
2.6
1.9
2.0
35
SAT U−1
I
I
I
= 0.2 A
OUT
OUT
OUT
V
SAT L−1
V
―
SAT U−2
Output Saturation Voltage
3
= 0.7 A
= 1.5 A
V
V
―
SAT L−2
V
―
SAT U−3
V
―
SAT L−3
Control Supply Voltage
Control Supply Current
V
―
―
GND
―
V
ref
ref
I
2
V
= 0~2.0 V
25
µA
ref
V
―
2.6
0.8
―
3.3
1.1
50
FU
Diode Forward Voltage
4
I
= 1.5 A
V
F
V
―
FL
I
V = 30 V
―
L−U
L
Output Leakage Current
NF Terminal Current
5
6
µA
µA
I
V = 30 V
L
―
―
50
L−L
Source type
T = 0~125°C
j
V
= 0~2.0 V
NF
I
180
300
490
NF
Internal Supply Output Voltage
Resistor for Oscillation (R3)
V
6
6
―
―
5
―
V
CC2
R
T = 0~125°C
j
13
20
32
kΩ
OSC
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TA7289P/F/FG
TEST CIRCUIT 1
I
CC1, 2, 3, 4
TA7289P/F/FG
TA7289P / TA7289F/FG
TEST CIRCUIT 2
, ∆V , I
V
, I
(
IN H), (L) IN1, 2
IN ref
TA7289P/F/FG
TA7289P / TA7289F/FG
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TA7289P/F/FG
TEST CIRCUIT 3
V
SAT U1, L1, U2, L2, U3, L3
TA7289P/F/FG
TA7289 / TA7289F/FG
Note: Calibrate I
to 0.2A / 0.7A / 1.5A by R
OUT
L
TEST CIRCUIT 4
V , V
FU FL
TA7289P/F/FG
TA7289 / TA7289F/FG
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TA7289P/F/FG
TEST CIRCUIT 5
I
, I
L−U L−L
TA7289P/F/FG
TA7289P / TA7289F/FG
TEST CIRCUIT 6
I
, V
, R
NF CC2 OSC
TA7289P/F/FG
TA7289P / TA7289F/FG
V
(V)
(A)
CC2
Note:
R
OSC
=
(Ω)
I
OSC
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TA7289P/F/FG
TEST CIRCUIT 7
I
OUT − V CHARACTERISTIC, IOUT − D / A CHARACTERISTIC
ref
TA7289P/F/FG
TA7289P / TA7289F/FG
TEST CIRCUIT 8
CC − FREQUENCY CHARACTERISTIC
I
TA7289P/F/FG
TA7289P / TA7289F/FG
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TA7289P/F/FG
TA7289F/FG
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TA7289P/F/FG
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TA7289P/F/FG
APPLICATION CIRCUIT 1
TA7289P / TA7289F/FG
Note 1: Connect if required.
Note 2: Recommended R value is approximately 200 Ω.
F
And C value is concerned with the OSC frequency.
F
We recommend to select optimum value of C under the experimental consideration of noise cutting and
F
time delay characteristics.
Note 3:
Utmost care is necessary in the design of the output, V , V , and GND lines since the IC may be destroyed
CC M
by short-circuiting between outputs, air contamination faults, or faults due to improper grounding, or by
short-circuiting between contiguous pins.
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TA7289P/F/FG
APPLICATION CIRCUIT 2 (PWM chopper stepping motor driver)
TA7289P / TA7289F/FG
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TA7289P/F/FG
PACKAGE DIMENSIONS
HDIP14−P−500−2.54A
Unit: mm
Weight: 3.00 g (Typ.)
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TA7289P/F/FG
PACKAGE DIMENSIONS
HSOP20−P−450−1.00
Unit: mm
Weight: 0.79 g (Typ.)
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TA7289P/F/FG
Notes on Contents
1. Block Diagrams
Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified
for explanatory purposes.
2. Equivalent Circuits
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for
explanatory purposes.
3. Timing Charts
Timing charts may be simplified for explanatory purposes.
4. Application Circuits
The application circuits shown in this document are provided for reference purposes only. Thorough
evaluation is required, especially at the mass production design stage.
Toshiba does not grant any license to any industrial property rights by providing these examples of
application circuits.
5. Test Circuits
Components in the test circuits are used only to obtain and confirm the device characteristics. These
components and circuits are not guaranteed to prevent malfunction or failure from occurring in the
application equipment.
IC Usage Considerations
Notes on handling of ICs
[1] The absolute maximum ratings of a semiconductor device are a set of ratings that must not be
exceeded, even for a moment. Do not exceed any of these ratings.
Exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result
injury by explosion or combustion.
[2] Use an appropriate power supply fuse to ensure that a large current does not continuously flow in
case of over current and/or IC failure. The IC will fully break down when used under conditions that
exceed its absolute maximum ratings, when the wiring is routed improperly or when an abnormal
pulse noise occurs from the wiring or load, causing a large current to continuously flow and the
breakdown can lead smoke or ignition. To minimize the effects of the flow of a large current in case
of breakdown, appropriate settings, such as fuse capacity, fusing time and insertion circuit location,
are required.
[3] If your design includes an inductive load such as a motor coil, incorporate a protection circuit into
the design to prevent device malfunction or breakdown caused by the current resulting from the
inrush current at power ON or the negative current resulting from the back electromotive force at
power OFF. IC breakdown may cause injury, smoke or ignition.
Use a stable power supply with ICs with built-in protection functions. If the power supply is
unstable, the protection function may not operate, causing IC breakdown. IC breakdown may cause
injury, smoke or ignition.
[4] Do not insert devices in the wrong orientation or incorrectly.
Make sure that the positive and negative terminals of power supplies are connected properly.
Otherwise, the current or power consumption may exceed the absolute maximum rating, and
exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result
injury by explosion or combustion.
In addition, do not use any device that is applied the current with inserting in the wrong orientation
or incorrectly even just one time.
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TA7289P/F/FG
Points to remember on handling of ICs
(1) Heat Radiation Design
In using an IC with large current flow such as power amp, regulator or driver, please design the
device so that heat is appropriately radiated, not to exceed the specified junction temperature (TJ)
at any time and condition. These ICs generate heat even during normal use. An inadequate IC heat
radiation design can lead to decrease in IC life, deterioration of IC characteristics or IC breakdown.
In addition, please design the device taking into considerate the effect of IC heat radiation with
peripheral components.
(2) Back-EMF
When a motor rotates in the reverse direction, stops or slows down abruptly, a current flow back to the motor’s
power supply due to the effect of back-EMF. If the current sink capability of the power supply is small, the
device’s motor power supply and output pins might be exposed to conditions beyond maximum ratings. To avoid
this problem, take the effect of back-EMF into consideration in system design.
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TA7289P/F/FG
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