TA8492P/PG
TOSHIBA Bipolar Linear Integrated Circuit
TA8492P/PG
Three-Phase Full-Wave Brushless DC Motor Driver IC
The TA8492P/PG is a three-phase full-wave supply voltage
control motor driver IC.
Features
•
•
•
•
Output current: I
O (max)
= 1.5 A
Supply voltage control motor driver
CW/CCW/STOP function
Operating voltage range: V
CC (opr.)
= 7~18 V
V
S (opr.)
= 0~18 V
TA8492PG:
The TA8492PG is Pb-free product.
The following conditions apply to solderability:
*Solderability
1. Use of Sn-63Pb solder bath
*solder bath temperature = 230ºC
*dipping time = 5 seconds
*number of times = once
*use of R-type flux
2. Use of Sn-3.0Ag-0.5Cu solder bath
*solder bath temperature = 245ºC
*dipping time = 5 seconds
*number of times = once
*use of R-type flux
Weight: 1.11 g (typ.)
Block Diagram
3ST
3
V
CC
14
16 V
S
FRC
H
a
H
a
+
−
+
−
TSD
7
6
Matrix
2 L
a
15 L
b
1 L
c
H
b
11
H
b
10
H
c
H
c
+
−
9
8
4, 5, 12, 13
GND
Company Headquarters
3 Northway Lane North
Latham,
New York
12110
Toll Free: 800.984.5337
Fax:
518.785.4725
Web: www.marktechopto.com | Email: info@marktechopto.com
California Sales Office:
950 South Coast Drive, Suite 265
Costa Mesa, California 92626
Toll Free: 800.984.5337
Fax: 714.850.9314
TA8492P/PG
Pin Function
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
L
c
L
a
3ST
GND
GND
H
a
H
a
H
c
H
c
−
+
Function
c-phase drive output pin
a-phase drive output pin
Switching CW/CCW/Stop
⎯
⎯
a-phase negative hall signal input pin
a-phase positive hall signal input pin
c-phase negative hall signal input pin
c-phase positive hall signal input pin
b-phase negative hall signal input pin
b-phase positive hall signal input pin
⎯
⎯
Supply voltage pin for control circuits
b-phase drive output pin
Supply voltage pin for output circuit
−
+
−
+
H
b
H
b
GND
GND
V
CC
L
b
V
S
Function
FRS
H
a
1
1
Forward
1
0
0
0
1
1
1
Reverse
0
0
0
1
1
Stop
1
0
0
0
1
1
0
0
0
1
1
1
0
0
1
1
1
0
0
0
1
1
High Impedance
L
L
M
H
M
L
M
H
H
Hall Input
H
b
0
0
1
1
1
0
0
0
1
H
c
1
0
0
0
1
1
1
0
0
L
a
L
L
M
H
H
M
H
H
M
Output
L
b
H
M
L
L
M
H
L
M
H
L
c
M
H
H
M
L
L
M
L
L
2
2004-07-27
TA8492P/PG
Maximum Ratings
(Ta
=
25°C)
Characteristic
Supply voltage
Output current
Power dissipation
Operating temperature
Storage temperature
Symbol
V
S
V
CC
I
O
P
D
T
opr
T
stg
Rating
20
20
1.5
1.4 (Note 1)
W
2.7 (Note 2)
−30~85
−55~150
°C
°C
Unit
V
V
A
Note 1: Not mounted on the PCB
Note 2: Mounted on the PCB (PCB area: 50
×
50
×
0.8 mm cu area: 60% or greater)
Electrical Characteristics
(Ta
=
25°C, V
CC
=
V
S
=
12 V)
Characteristic
Symbol
I
CC-1
Supply current
I
CC-2
I
CC-3
Output saturation voltage
Upper
Lower
Upper
Output leak current
Lower
Input sensitivity
Hall amp.
Common mode input
voltage range
Stop
CW/CCW
control operation voltage
CW
CCW
Thermal shutdown operating
temperature
V
SAT (U)
V
SAT (L)
I
L (U)
I
L (L)
V
H
V
CMRH
V
STP
V
FW
V
RV
T
SD
⎯
6
2
3
4
5
6
7
1
Test
Circuit
Test Condition
V
CC
=
12 V, 3ST: GND,
V
S
: Open
V
CC
=
18 V, 3ST: GND,
V
S
: Open
Stop (3ST
=
V
CC
)
I
O
=
1 A (source current)
I
O
=
1 A (sink current)
V
S
=
20 V
V
S
=
20 V
⎯
⎯
⎯
⎯
⎯
⎯
Min
⎯
⎯
⎯
⎯
⎯
⎯
⎯
20
2
V
CC
−
0.4
2.5
0
⎯
Typ.
5.0
6.0
2.5
1.35
0.4
⎯
⎯
⎯
⎯
⎯
⎯
⎯
160
Max
7.0
9.0
4
1.7
0.6
50
50
400
V
CC
−
3.5
V
CC
6.5
0.4
⎯
°C
V
mV
p-p
V
µA
V
mA
Unit
3
2004-07-27
TA8492P/PG
Functional Description
•
Hall amp. circuit
Ha
+
Ha
−
The Hall amp is a high-gain amp. The input sensitivity is 20 mV
p-p
(min). Make sure that the input amplitude
does not exceed 400 mV
p-p
.
The common-mode voltage V
CMRH
=
2.0 to V
CC
−
3.5 V.
Ha
Ha
−
+
20 mV
p-p
~400 mV
p-p
•
CW/CCW/Stop control circuit
3ST
In Reverse mode, the control input (3ST) voltage range is V
RV
=
0 to 0.4 V. However, keep the voltage as close to
the IC GND as possible (see the application circuit diagram).
Similarly, in Stop mode, keep the voltage as close to the IC V
CC
as possible.
In Forward mode, Toshiba recommend an input voltage of V
CC
/2.
•
Output circuits
V
S
L
a
L
a
(Upper)
(Lower)
The output circuit uses voltage control where the upper and lower output transistors are saturated and the
output current is controlled by the V
S
voltage. To reduce switching noise, connect a snubber capacitor to the
output circuit.
•
Thermal shutdown circuit
The circuit turns off output when T
j
=
160°C (typ.) (according to design specification)
4
2004-07-27
TA8492P/PG
Handling Precautions
CW/CCW/Stop Control Circuit
a) At 3ST input, because the input voltage ranges for V
RV
(Reverse mode) and V
STP
(Stop mode) are narrow,
make sure no impedance is caused between the IC V
CC
and GND pins. Do not connect an input resistor to
the 3ST pin since doing so will cause voltage offset.
b) When controlling the rotation direction using 3ST input, switch the direction from Reverse to Stop mode or
vice versa with V
S
=
0 V to eliminate the risk of punch-through current being generated at output.
Hall Amp. Circuit
A Hall IC input amplitude of over 400 mV
p-p
will cause an output function error. Make sure the amplitude is
within the specified range.
Output Circuits
Particular care is necessary in the design of the output, V
S
, V
CC
and GND lines since the IC may be destroyed
by short circuits between outputs, air contamination faults, or faults resulting from improper grounding.
External Parts
Symbo
l
C
1
C
2
C
3
R
1
Function
Power supply line oscillation prevention
Power supply line oscillation prevention
Output noise reduction
Hall bias
Recommended
Value
4.7
µF
4.7
µF
4.7
µF
⎯
Remarks
⎯
⎯
(Note 3)
(Note 4)
Note 3: Set an appropriate value depending on the motor and use conditions.
Set an appropriate value so that the Hall IC output common-mode input voltage and amplitude fall within the
specified ranges in the Electrical Characteristics table.
Note 4: Be sure to set this bias so that the Hall element output amplitude and common-mode input voltage fall within
the ranges specified in the table of electrical characteristics.
5
2004-07-27
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