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GS-D200 Fiches technique(PDF) 12 Page - STMicroelectronics

No de pièce GS-D200
Description  2/2.5A BIPOLAR STEPPER MOTOR DRIVE MODULES
PDF  17 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

GS-D200 Fiches technique(HTML) 12 Page - STMicroelectronics

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Figure 14: GS-D200 and GS-D200S Phase Current Programming
12
8
1
12
8
1
osc
osc
fC < 17 KHz
fC >17KHz
Figure 15: Chopper Frequency Programming
Chopper Frequency Programming
The chopper frequency is internally set to 17kHz,
and it can be changed by addition of external
components as follows. To increase the chopper
frequency a resistor must be connected between
Oscillator (pin 8) and Vss (pin 12, see fig. 15).
The resistor value is calculated according to the
formula:
Rf
=
306
fc
− 17 =
k
Ω
where fc
= kHz Rf≥ 18kΩ
To decrease the chopper frequency a capacitor
must be connected between Oscillator (pin 8) and
Gnd1 (pin 1). The capacitor value is calculated
according to the formula:
Cf
=
80.5
− 4.7fc
fc
= nF where fc = kHz
GS-D200/GS-D200S



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