ta7712fg TOSHIBA Semiconductor CORPORATION, ta7712fg Datasheet - Page 15

• Manufacturer Part Number: ta7712fg
• Description: 3-phase, Full-wave Brushless Dc Motor Controller Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Notes on Contents
1. Block Diagrams
2. Equivalent Circuits
3. Timing Charts
4. Application Circuits
5. Test Circuits
IC Usage Considerations
[1]
[2] Do not insert devices in the wrong orientation or incorrectly.
Points to remember on handling of ICs
Back-EMF
Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified
for explanatory purposes.
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for
explanatory purposes.
Timing charts may be simplified for explanatory purposes.
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.
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.
Notes on handling of ICs
The
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.
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.
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.
absolute maximum ratings of a semiconductor device are a set of ratings that must not be
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TA7712P/PG/F/FG
2007-9-11