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APX9359A Fiches technique(PDF) 9 Page - Anpec Electronics Coropration

No de pièce APX9359A
Description  Three-Phase Sine-wave Sensor-Less Fan Motor Driver
PDF  15 Pages
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Fabricant  ANPEC [Anpec Electronics Coropration]
Site Internet  http://www.anpec.com.tw
Logo ANPEC - Anpec Electronics Coropration

APX9359A Fiches technique(HTML) 9 Page - Anpec Electronics Coropration

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Copyright
© ANPEC Electronics Corp.
Rev. A.2 - Jan., 2018
www.anpec.com.tw
9
APX9359A
Application Information
Input Protection Diode & Capacitor
It is necessary to add a protection diode (D1) to prevent
the damage from the power reverse connection. However,
the protection diode will cause a voltage drop on the sup-
ply voltage. The current rating of the diode must be larger
than the maximum output current. For the noise reduc-
tion purpose, a capacitor (C1) is connected between VCC
and GND. (see Typical Application Circuit) It
’s suggested
that C1 should be placed as close as possible in the VCC
pin.
SC Capacitor
The capacitor connected between SC pin and GND can
define the frequency of force commutation. The optimal
design of the frequency could make sure the motor start-
up in succeed. Its capacitance from 1nF to 10nF is
recommended.
SO Resistor
The value of the SO resistor could be decided by the
following equation:
For example:
V
CC = 5V, ISO = 5mA, VSO = 0.1V, RSO = 0.98kΩ
The value of resistor in the range of 1k
Ω to 10kΩ is
recommended.
SO
SO
CC
SO
I
V
V
R
−
=



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