STK673-010 Ver la hoja de datos (PDF) - SANYO -> Panasonic

Número de pieza

componentes Descripción

Fabricante

STK673-010

3-Phase Stepping Motor Driver (sine wave drive) Output Current 2.4A

SANYO -> Panasonic 

Sample Application Circuit

STK673-010

Set Equation of Output Current IO Peak Value

where

Io peak = Vref ÷ K

K = 0.63 (V/A)

Vref ≤ 0.5 × VCC2

Vref = VCC2 × Rox ÷ (R01 + Rox)

Rox = (R02 × 4.0 kΩ) ÷ (R02 + 4.0kΩ)

• R02 is preferably set to be 100Ω in order to minimize

the effect of the internal impedance (4.0kΩ ±30%) of

STK637-010

• For noise reduction in 5V system, put the GND side

of bypass capacitor (220 µF) of VCC1 (shown in a

thick line in the above Sample Application Circuit) in

the vicinity of pins 27 and 28 of the hybrid IC.

• Set the capacitance value of the bypass capacitor C1

such that a ripple current of a capacitance, which var-

ies in accordance with the increase of motor current,

lies in an allowable range.

• K in the above-mentioned set equation varies within

±5 to ±10% depending on the inductance L and resis-

tance value R of the used motor. Check the peak

value setting of Io upon actual setting.

No. 5708—5/16

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