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PDF TB9060FN Data sheet ( Hoja de datos )
| Número de pieza | TB9060FN | |
| Descripción | 3-Phase Full-Wave Sensorless Controller | |
| Fabricantes | Toshiba Semiconductor | |
| Logotipo |  |
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Preliminary TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TB9060FN
TB9060FN
3-Phase Full-Wave Sensorless Controller for Brushless DC Motors
The TB9060FN is a 3-phase full-wave sensorless controller for
brushless DC motors. It is capable of controlling voltage by PWM
signal input. When combined with various drive circuits, it can be
used for various types of motors.
Features
· 3-phase full-wave sensorless drive
· PWM control (PWM signal is applied externally.)
· Turn-on signal output current: 20 mA
· Overcurrent protection function
· Forward/reverse modes
Weight: 0.10 g (typ.)
· Lead angle control function (0°, 7.5°, 15° and 30°)
· Lap turn-on function
· Two types of PWM output (upper PWM and upper/lower alternate PWM)
· Rotational speed sensing function
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2002-09-11
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TB9060FN
Functional Description
1. Sensorless Drive
On receipt of PWM signal start instruction, turn-on signal for forced commutation (commutation
irrespective of the motor’s rotor position) is driven onto pins 15 to 17 and pins 19 to 21, and the motor
starts to rotate. The motor’s rotation causes induced voltage on winding wire pin for each phase.
When signals indicating positive or negative for pin voltage (including induced voltage) for each phase
are applied on respective position signal input pin, the turn-on signal for forced commutation is
automatically switched to turn-on signal for position signal (induced voltage).
Thereafter turn-on signal is formed according to the induced voltage contained in the pin voltage so as to
drive the brushless DC motor.
Sensorless drive timing charts (lead angles: 0°, 7.5°, 15° and 30°) are shown below.
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2002-09-11
5 Page 
TB9060FN
3. PWM Control
PWM signal can be reflected in turn-on signal by applying PWM signal externally.
The frequency of the PWM signal shoud be set adequately high with regard to the electrical frequency of
the motor and in accordance to the switching characteristics of the drive circuit.
Because positional detection is performed on the falling edges of PWM signal, positional detection cannot
be performed with 0% duty or 100% duty.
Duty (max)
Duty (min)
250 ns
250 ns
The voltage applied to the motor is duty 100% because of the storage time of the drive circuit even if the
duty is 99%.
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2002-09-11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet TB9060FN.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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