TA7259 Ver la hoja de datos (PDF) - Toshiba

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TA7259

3-PHASE BRUSHLESS DC MOTOR DRIVER IC

Toshiba 

TA7259P/F/FG

ⅱ) The drive current path of the position sensing device should be connected to the GND independently.

It should be separated especially from the output current path.

If there is a plunge in position sensing device, insert the condenser (0.05~1µF) between + pin and –

pin of each position sensing device.

If there is a plunge in control input, insert the condenser (0.001〜0.1µF) between this pin and the

GND.

TA7259P/F/FG

Do not have common impedance with other

circuits.

Fig図. 33.

ⅲ) If upper oscillation (5MHz or more) is found, connect the condensers commonly from each coil output

and then insert the condenser (C = 0.01〜0.1µF) between this connecting point and RF pin. (Fig.4−a)

Aside from using a ringing absorbing condenser, consider a different method to connect the

condenser between each coil output and RF pin. (Fig 4−b)

TA7259

P/F/FG

Fig図. 44--aa

ⅳ) Make sure to take the power supply from VCC pin

(“8” pin) directly. Design the circuit not to have the

common impedance toward GND.

Use of C2 (0.01〜0.1µF) is also effective.

F図ig.44-b-b

TA7259

P/F/FG

Fig図. 55.

10

2006-4-14

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