Advertisement
Note 1:
Some of the functional blocks, circuits in the block diagram may be omitted or simplified for
explanatory purposes.
Note 2:
Do not insert devices in the wrong orientation or incorrectly. Otherwise, it may cause device
breakdown, damage and/or deterioration.
Note 3:
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.
Note 4:
Careful attention should be paid to the layout of the output line, VBAT, VCC and GND line
since IC may be destroyed due to short-circuit between outputs, to the power supply, or to
the ground.
Note 5:
For the board design, it is necessary to consider the solid pattern of AGND and PGND.
Back-EMF
While a motor is rotating, there is a timing at which power is fed back to the power supply. At that
timing, the motor current is fed back to the power supply owing to the effect of the motor back-EMF.
If the power supply does not have enough sink capability, the power supply and output pins of the
device might rise above the rated voltages. The magnitude of the motor back-EMF varies with usage
conditions and motor characteristics. It must be fully verified that there is no risk that this product or
other components will be damaged or fail owing to the motor back-EMF.
45 / 49
TB9051FTG
Ver.1.1 2019-03-14
Advertisement
