trol motor driver
CW/CCW/STOP function
Operating voltage range: V
CC (opr.)
= 7~18 V


V
S (opr.)
= 0~18 V

Block Diagram




Weight: 1.11 g (typ.)
4, 5, 12, 13
3ST
3
FRC
V
CC

14
7
6
Matrix
11
10
9
8
H
a
+
H
a H
b
+
H
b H
c
+
H
c TSD
16
2
15
1 L
c

L
b

L
a

V
S

GND
The TA8492PG is a Pb-free product.
The following conditions apply to solderability:
*Solderability
1.

Use of Sn-37Pb solder bath
*solder bath temperature = 230°C
*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 = 245°C
*dipping time = 5 seconds
* number of times = once
*use of R-type flux TA8492P/PG
2006-3-2
2
Pin Description
Pin No.
Symbol
Function
1 L
c

c-phase drive output pin
2 L
a

a-phase drive output pin
3 3ST
Switching
CW/CCW/Stop
4 GND

5 GND
6 H
a
a-phase negative hall signal input pin
7 H
a
+

a-phase positive hall signal input pin
8 H
c
c-phase negative hall signal input pin
9 H
c
+

c-phase positive hall signal input pin
10 H
b
b-phase negative hall signal input pin
11 H
b
+

b-phase positive hall signal input pin
12 GND
13 GND
14 V
CC

Supply voltage pin for control circuits
15 L
b

b-phase drive output pin
16 V
S

Supply voltage pin for output circuit

Functions
Hall Input
Output
FRS
H
a

H
b

H
c

L
a

L
b

L
c

1 0 1 L H M
1 0 0 L M H
1 1 0 M L H
0 1 0 H L M
0 1 1 H M L
Forward
0 0 1 M H L
1 0 1 H L M
1 0 0 H M L
1 1 0 M H L
0 1 0 L H M
0 1 1 L M H
Reverse
0 0 1 M L H
1 0 1
1 0 0
1 1 0
0 1 0
0 1 1
Stop
0 0 1
High Impedance
TA8492P/PG
2006-3-2
3
Absolute Maximum Ratings
(Ta
=
25°C)

Characteristic Symbol
Rating
Unit
V
S

20 V
Supply voltage
V
CC
20 V
Output current
I
O
1.5
A
1.4 (Note 1)
Power dissipation
P
D

2.7 (Note 2)
W
Operating temperature
T
opr
30~85

°C
Storage temperature
T
stg
55~150 °C
Note 1: Not mounted on the PCB
Note 2: Mounted on a PCB (PCB area, 50
×
50
×
0.8 mm; cu area, over 60%)

Electrical Characteristics
(Ta
=
25°C, V
CC

=
V
S

=
12 V)
Characteristic Symbol
Test
Circuit
Test Condition
Min
Typ.
Max
Unit
I
CC-1

V
CC

=
12 V, 3ST: GND,
V
S
: Open 5.0 7.0
I
CC-2

V
CC

=
18 V, 3ST: GND,
V
S
: Open 6.0 9.0
Supply current
I
CC-3

1
Stop (3ST
=
V
CC
) 2.5 4
mA
Upper V
SAT (U)
2
I
O

=
1 A (source current) 1.35 1.7
Output saturation voltage Lower V
SAT (L)
3
I
O

=
1 A (sink current) 0.4 0.6 V
Upper I
L (U)
4
V
S

=
20 V 50
Output leak current
Lower I
L (L)
5
V
S

=
20 V 50
µ
A
Input sensitivity
V
H
6 20 400
mV
p-p
Hall amp.
Common-mode input
voltage range
V
CMRH
7 2
V
CC
3.5
V
Stop V
STP

V
CC

0.4
V
CC
CW V
FW
2.5 6.5
CW/CCW
control operation voltage
CCW V
RV

6 0 0.4
V
Thermal shutdown operating
temperature
T
SD

160 °C
TA8492P/PG
2006-3-2
4
Functional Description Hall amp. circuit


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.




CW/CCW/Stop control circuit


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 recommends that the input voltage be V
CC
/2.



Output circuit


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)

Ha
+
Ha
(Upper)
L
a

V
S

(Lower)
L
a


3ST
Ha
+

Ha 20 mV
p-p
~400 mV
p-p
TA8492P/PG
2006-3-2
5
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 as this 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; otherwise punch-through current may be generated at output.

Hall amp. circuit

A Hall IC input amplitude of over 400 mV
p-p
causes an output function error. Make sure the amplitude is
within the specified range.

Output circuit

Particular care is necessary in the design of the output, V
S
, V
CC
and GND lines since the IC may be destroyed
due to short circuits between output air contamination faults, or faults caused by improper grounding

External Parts
Symbol Function Recommended
Value
Remarks
C
1

Power supply line oscillation prevention
4.7
µ
F
C
2

Power supply line oscillation prevention
4.7
µ
F
C
3

Output noise reduction
4.7
µ
F (Note
3)
R
1
Hall
bias

(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.
TA8492P/PG
2006-3-2
6
Test circuit
1. I
CC1
, I
CC2
, I
CC3



I
CC1
: Input V
Ha+
, V
Hb+
, V
Hc+
(6.01 V/5.99 V). V
CC

= 12 V/V
3ST

= GND
I
CC2
: Input V
Ha+
, V
Hb+
, V
Hc+
(6.01 V/5.99 V). V
CC

= 18 V/V
3ST

= GND
I
CC3
: Input V
Ha+
, V
Hb+
, V
Hc+
(6.01 V/5.99 V). V
CC

= 12 V/V
3ST

= V
CC



2. V
SAT (U)



V
SAT (U)
: Input V
Ha+
, V
Hb+
, V
Hc+
(6.01 V/5.99 V), check that the output function is at High level,
then measure phases a, b, and c.

V
Hc
+
V
Hb
+
15
13
11
12
9
10
L
b

V
CC
GND GND
H
b
+
H
b H
c
+
1
3
2
4
6
5
8
7
L
c

L
a
3ST
GND
GND
H
a H
a
+
H
c 4.7
µ
F
4.7
µ
F
V
CC

V
Ha
+
6 V
V
3ST

16
V
S

14
V
Hc
+
V
Hb
+
15
13
11
12
9
10
L
b

V
CC
GND GND
H
b
+
H
b H
c
+
1
3
2
4
6
5
8
7
L
c

L
a
3ST
GND
GND
H
a H
a
+
H
c I
O

=
1.0 A
4.7
µ
F
12 V
V
Ha
+
6 V
16
V
S

14
12 V
V

4.7
µ
F TA8492P/PG
2006-3-2
7
3. V
SAT (L)



V
SAT (L)
: Input V
Ha+
, V
Hb+
, V
Hc+
(6.01 V/5.99 V) and check that the output function is L.
(a-phase, b-phase, c-phase)


4. I
L (U)



I
L (U)
: Check that the output function is high impedance at 3ST
= V
CC
.
(a-phase, b-phase, c-phase)

V
Hc
+
V
Hb
+
15
13
11
12
9
10
L
b

V
CC
GND GND
H
b
+
H
b H
c
+
1
3
2
4
6
5
8
7
L
c

L
a
3ST
GND
GND
H
a H
a
+
H
c I
O

=
1.0 A
4.7
µ
F
12 V
V
Ha
+
6 V
16
V
S

14
12 V
V
4.7
µ
F

V
Hc
+
V
Hb
+
15
13
11
12
9
10
L
b

V
CC
GND GND
H
b
+
H
b H
c
+
1
3
2
4
6
5
8
7
L
c

L
a
3ST
GND
GND
H
a H
a
+
H
c 4.7
µ
F
12 V
V
Ha
+
6 V
16
V
S

14
18 V
A
4.7
µ
F
V
CC
TA8492P/PG
2006-3-2
8
5. I
L (L)



I
L (L)
: Check that the output function is high impedance at 3ST
= V
CC
.
(a-phase, b-phase, c-phase)


6. V
H
, V
STP
, V
FW
, V
RV



V
H
: Input
V
Ha+
, V
Hb+
, V
Hc+
(6.01 V/5.99 V) and check the output function.
(a-phase, b-phase, c-phase) AT V
3ST

= GND.
V
STP
: When V
3ST
is 8.5 V, input V
Ha+
, V
Hb+
, V
Hc+
(6.01 V/5.99 V), fix the output function, then check
that the output function is at high impedance.
V
FW
: Input V
Ha+
, V
Hb+
, V
Hc+
(6.01 V/5.99 V) and check that the output function is forward mode.
AT V
3ST

= 2.5 V/6.5 V.
V
Hc
+
V
Hb
+
15
13
11
12
9
10
L
b

V
CC
GND GND
H
b
+
H
b H
c
+
1
3
2
4
6
5
8
7
L
c

L
a
3ST
GND
GND
H
a H
a
+
H
c 4.7
µ
F
12 V
V
Ha
+
6 V
16
V
S

14
12 V
4.7
µ
F
V
V
CC

V
Hc
+
V
Hb
+
15
13
11
12
9
10
L
b

V
CC
GND GND
H
b
+
H
b H
c
+
1
3
2
4
6
5
8
7
L
c

L
a
3ST
GND
GND
H
a H
a
+
H
c 4.7
µ
F
12 V
V
Ha
+
6 V
16
V
S

14
12 V
4.7
µ
F
V
V
3ST
TA8492P/PG
2006-3-2
9
V
RV
: Input
V
Ha+
, V
Hb+
, V
Hc+
(6.01 V/5.99 V) and check that the output function is reverse mode.
AT V
3ST

= 0.4 V.


7. V
CMRH



V
CMRH
: Measure the I
CMRH
gap between V
CMRH

= 2 V and 8.5 V.

15
13
11
12
9
10
L
b

V
CC
GND GND
H
b
+
H
b H
c
+
1
3
2
4
6
5
8
7
L
c

L
a
3ST
GND
GND
H
a H
a
+
H
c 4.7
µ
F
12 V
16
V
S

14
12 V
4.7
µ
F
V
CM
R
H

A
I
CM
R
H
TA8492P/PG
2006-3-2
10
Application Circuit




Note:
Utmost care is necessary in the design of the output, V
CC
, V
M
, and GND lines since the IC may be destroyed
by short-circuiting between outputs, air contamination faults, or faults due to improper grounding, or by
short-circuiting between contiguous pins.

4, 5, 12, 13
3ST 3
FRC
V
CC

14
7
6
Matrix
11
10
9
8
H
a
+
H
a H
b
+
H
b H
c
+
H
c TSD
16
2
15
1 L
c

L
b

L
a

V
S

GND
C
1
12 V
R
1

V
CC

R
1

C
3
C
2
12 V TA8492P/PG
2006-3-2
11
Package Dimensions


Weight: 1.11 g (typ.) TA8492P/PG
2006-3-2
12
Notes on Contents

1. Block Diagrams
Som