TA7259 Ver la hoja de datos (PDF) - Toshiba

Número de pieza

componentes Descripción

Fabricante

TA7259

3-PHASE BRUSHLESS DC MOTOR DRIVER IC

Toshiba 

Application circuit 1

Control signal input

TA7259P/F/FG

Normal/Reverse SW

Position detection.

Constant voltage/

constant current drive.

(Constant current drive

is shown in this figure.)

TA7259

P/F/FG

Hall supply

Coil current

※ 1:

※ 2:

※ 3:

VZ of zenner diode should correspond to DC level of control signal input.

(VZ = 2.5〜9V. In considering temperature characteristics, applying 5V is recommended. DC voltage of

negative control input (VIN−pin) equals VZ+RF・IL.

RF is determined by the coil impedance, F/V converter voltage (control input), and necessary starting torque.

However, please apply within the range of 0.3 to 5Ω.

Connect this condenser when there is a plunge in control input.

Application circuit 2

Control signal input

Position sensing device

TA7259

P/F/FG

Normal/Reverse SW

Note:

Utmost care is necessary in the design of the output, VCC, VM, 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.

12

2006-4-14

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