TA7712P/PG/F/FG
2007-9-11
1
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA7712P/PG,TA7712F/FG
3-Phase, Full-Wave Brushless DC Motor Controller IC
FEATURES
z No frequency generator (FG) required
(The rotation signal is derived from the position sensor
signal.)
z Start, Stop, clockwise (CW), counterclockwise (CCW) and
Brake
z High-gain position sensor with input hysteresis
z Rotation signal output (with a frequency six times that of the
position sensor output (Hall effect output))
z External transistors are required.
Weight
DIP20−P−300−2.54A : 2.25 g (Typ.)
SSOP24−P−300−1.00 : 0.32 g (Typ.)
TA7712P/PG
The TA7712PG/FG:
The TA7712PG/FG is a Pb-free product.
About solderability, following conditions were confirmed
• Solderability
(1) Use of Sn-37Pb solder Bath
· solder bath temperature = 230°C
· dipping time = 5 seconds
· the 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
TA7712F/FG
TA7712P/PG/F/FG
2007-9-11
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BLOCK DIAGRAM
TA7712P/PG, TA7712F/FG
POSITION SENSOR
TA7712P/PG/F/FG
2007-9-11
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PIN DESCRIPTION
PIN No.
P/PG F/FG SYMBOL DESCRIPTION
1 1 La+ High-side drive output for phase a
2 2 La− Low-side drive output for phase a
3 3 Lb+ High-side drive output for phase b
4 5 Lb− Low-side drive output for phase b
5 6 Lc+ High-side drive output for phase c
6 7 Lc− Low-side drive output for phase c
7 8 GND Ground
8 10 START/STOP Start/Stop select input
9 11 CW/CCW Rotation direction select input
10 12 BRAKE Brake input
11 13 FGOUT FG output
12 14 TFG Connection pin for a capacitor and an resistor
13 ― N. C. No connect
14 17 Hc− c−phase negative Hall-amplifier input
15 18 Hc+ c−phase positive Hall-amplifierinput
16 19 Hb− b−phase negative Hall-amplifier input
17 20 Hb+ b−phase positive Hall-amplifier input
18 22 Ha− a−phase negative Hall-amplifier input
19 23 Ha+ a−phase positive Hall-amplifier input
20 24 VCC Power supply input
F/FG: Pins 4, 9, 15, 16 and 21: No connect
TA7712P/PG/F/FG
2007-9-11
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TIMING CHART
Clockwise rotation (The position sensor signals are switched in the following sequence: Ha →
Hb → Hc.)
Counterclockwise rotation (The position sensor signals are switched in the following
sequence: Ha → Hc → Hb.)
START / STOP = High
CW / CCW = low
BRAKE = High
START / STOP = High
CW / CCW = High
BRAKE = High
TA7712P/PG/F/FG
2007-9-11
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APPLICATIONS OF THE TA7712P/PG, TA7712F/FG
The TA7712P/PG and TA7712F/FG are provided with a stop function, which enables them to stop the motor having
a large inertia like a video disk player in a short time, so that disks can be changed quickly.
To eliminate the need of the frequency generator (FG), which was conventionally required for generating the
rotation signal, signals from the position sensor input are ORed and its synthesized signal is sent out from the
FGOUT pin (pin 11/13).
That is, since the FGOUT signal is a mixture of three position sensor outputs (Ha, Hb and Hc), its frequency is six
times that of each position sensor signal. This enables the TA7712P/PG and TA7712F/FG to achieve sufficient
control characteristics even with the F-V (frequency to voltage) convertor using a monostable multivibrator (MMV).
The difference between them and the TA7713P/PG is that the stop function is automated in the TA7713P/PG, while
it is operated by the external signal in the TA7712P/PG.
The following sections describe the applications of the TA7713P/PG.
(1) Functional Description on the FGOUT (pin 11/13) and TFG (pin 12/14) pins
Q1 and Q2 in Figure 1 comprise a monostable multivibrator. The position sensor input signals, Ha, Hb and Hc,
are combined together and applied to the base of Q2 after squaring waveform with a flip-flop, FF.
The output pulse width of the MMV consisting of Q1 and Q2 is determined by R2 and C2, which are connected
to TFG (pin 12/14).The square wave having the pulse width that is determined by C2 and R2 is generated from
FGOUT (pin 11/13). The frequency of this square wave, which is proportional to that of the rotation signal, is
six times the frequency of each position sensor signal. (Six pulses per electrical revolution)
The F-V conversion is performed by connecting the FGOUT output to a low-pass fileter and integrating the
output signal.
Figure 1
POSITION SENSOR
TA7712P/PG/F/FG
2007-9-11
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(2) Each Control Input
Figure 2
START / STOP CW / CCW BRAKE OUTPUT
H H H Positive Torque mode
H L H Negative Torque mode
H or L H or L L Break mode
L H or L H Stop mode
Note: In Stop mode, all outputs of La+ through Lc+ and La− through Lc− are disabled.
In Break mode, outputs of La+ through Lc+ are enabled. (Source mode)
(3) Output Circuitry
As shown in the block diagram, the high-side outputs come from the emitters of Darlington-connected PNP
and NPN transistors, and the low-side outputs are open-collectors of NPN transistors.
Connect external transistors in the same manner as shown in the application circuit.
(4) Position Sensor Iinputs
The input voltage swing should be between 20 mVPP and 500 mVPP.
Waveforms of the Hb and Hc input signals
behave the same.
High: Start High: Positive Torque
Low: Negative Torque
Low: Brake
33 kΩ
33 kΩ
33 kΩ
15 kΩ
15 kΩ
15 kΩ
20 mVpp – 500 mVpp
TA7712P/PG/F/FG
2007-9-11
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ABSOLUTE MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTICS SYMBOL RATING UNIT
Power Supply Voltage VCC 8 V
Output Current IO ±25 mA
Position Sensor Input Voltage
(Tj = 25°C) VH 500 mVp−p
TA8412P/PG 1.2
Power Dissipation
TA8412F/FG
PD (Note)
0.5
W
Operating Temperature Topr −30 to 75 °C
Storage Temperature Tstg −55 to 150 °C
Note: Measured for the IC only
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VCC = 5 V, Ta = 25°C)
CHARACTERISTICS SYMBOL
TEST
CIR−
CUIT
TEST CONDITIONS MIN TYP. MAX UNIT
Operating Supply Voltage VCC (opr) ― 4.75 5.00 5.25 V
ICC1 In Stop mode ― 3.4 6.0
Power Supply Current
ICC2
1
Output: open ― 17.0 26.0
mA
VSAT (U−1) RL = 200 Ω ― 1.3 2.0
High Side
VSAT (U−2) RL = 2 kΩ ― 1.0 1.3
VSAT (L−1) RL = 200 Ω ― 0.8 1.2
Saturation Voltage
Low Side
VSAT (L−2)
2
RL = 2 kΩ ― 0.18 0.4
V
High Side IL (U) ― ― 100
Leakage Current
Low Side IL (L)
2
― ― 100
μA
In-phaseInput Voltage
Range CMRH 2.0 ― 4.5 V
Input Sensitivity VH 20 ― ― mVp−p
Position
Sensor
Input
Input Hysteresis VH−Hys
―
2 7 15 mV
H VIN R (H) 2 4.0 ― ―
Operating Input
Voltage L VIN R (L) 2 ― ― 1.0
V
START
Input (RUN)
Input Current L IIN R 2 VIN R = 1.0 V ― ― 200 μA
H VIN C (H) 4.0 ― ―
Operating Input
Voltage L VIN C (L) ― ― 1.0
V
CW / CCW
Input
(FWD / REV) Input Current L IIN C
2
VIN C = 1.0 V ― ― 200 μA
H VIN B (H) 4.0 ― ―
Operating Input
Voltage L VIN B (L) ― ― 1.0
V
BRAKE
Input
(BRAKE) Input Current H IIN B
2
VIN N = 1.0 V ― ― 200 μA
Output Current H IFGH 3 80 ― ― μA
Output Voltage L VFGL 3 IFG = 0.3 mA ― ― 0.4 V
FG Output
Pulse Width τFG 3 C = 0.1 μF, R = 10 kΩ 0.9 1.0 1.1 ms
TA7712P/PG/F/FG
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TEST CIRCUIT 1
VRUN VF / R VBRAKE Va Vb Vc REMARKS
ICC1 1.0 V 1.0 V 1.0 V 2.48 V 2.48 V 2.52 V
ICC2 4.0 V 4.0 V 4.0 V 2.52 V 2.48 V 2.52 V
TA7712P/PG/F/FG
0.1 μF
15 k
Ω
10 kΩ
TA7712P/PG/F/FG
2007-9-11
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TEST CIRCUIT 2
INPUT CONDITION MEASUREMENT ITEM
Va Vb Vc RUN F / R BRAKE La+ La− Lb+ Lb− Lc+ Lc−
2.52 V 2.48 V 2.48 V VIN R (H) VIN C (H) VIN B (H) LEAK SAT LEAK LEAK SAT LEAK
2.48 V 2.52 V 2.48 V ― ― ― SAT LEAK ― SAT LEAK ―
2.48 V 2.48 V 2.52 V ― ― ― ― ― SAT ― ― SAT
LEAK: Measurement of a leakage current
SAT: Measurement of a saturation voltage
To verify the characteristics of the VIN R (L), VIN C (L) and VIN B (L) voltages, the output voltage should be checked
while each respective terminal is set at 1.0 (V).
Hall Amplifier Input
To check the input sensitivity and
input hysteresis, set Va, Vb and Vc to
2.5 V ± 20 mV as shown below, and
measure the leakage current and
saturation voltage individually.
TA7712P/PG/F/FG
0.1 μF
15 k
Ω
10 kΩ
TA7712P/PG/F/FG
2007-9-11
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TEST CIRCUIT 3
TIMING CHART FOR CLOCKWISE ROTATION
CLOCK: 360 Hz
z Calculate the IFGH current from the
output voltage obtained when SW2 is
connected to b.
z Measure VFGL and τFG when SW2 is
connected to a.
TA7712P/PG/F/FG
15 kΩ
10 kΩ
0.1 μF
20 kΩ
TA7712P/PG/F/FG
2007-9-11
11
BASIC APPLICATION CIRCUIT
TA7712P/PG/F/FG
10 kΩ
0.1 μF
TA7712P/PG/F/FG
2007-9-11
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APPLICATION CIRCUIT
Note: The IC may be destroyed in case of a short-circuit across outputs, a short-circuit to power supply, a
short-circuit to ground, or a short-circuit between neighboring pins. This possibility should be fully considered
in the design of the output, VCC, VM and ground lines.
TA7712P/PG/F/FG
① TA7712P/PG
② TA7712F/FG
No heat sink
VM = 10 – 60 V
10 μF
TA7712P/PG/F/FG
2007-9-11
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PACKAGE DIMENSIONS
DIP20−P−300−2.54A Unit: mm
Weight: 2.25 g (Typ.)
TA7712P/PG/F/FG
2007-9-11
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PACKAGE DIMENSIONS
SSOP24−P−300−1.00 Unit: mm
Weight: 0.32 g (Typ.)
TA7712P/PG/F/FG
2007-9-11
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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] 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.
Points to remember on handling of ICs
Back-EMF
When a motor rotates in the reverse direction, stops or slows down abruptly, a current flows 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.
TA7712P/PG/F/FG
2007-9-11
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RESTRICTIONS ON PRODUCT USE 20070701-EN
• The information contained herein is subject to change without notice.
• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc.
• The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his
document shall be made at the customer’s own risk.
• The products described in this document shall not be used or embedded to any downstream products of which
manufacture, use and/or sale are prohibited under any applicable laws and regulations.
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patents or other rights of
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that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses
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