KA3086D Просмотр технического описания (PDF) - Fairchild Semiconductor

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KA3086D

2-Phase BLDC Motor Driver

Fairchild Semiconductor 

ICTL

IO

AT

FAN8486D (KA3086D)

Figure 2.

IO

IOmax

AT

ICOmax

ICTL

Figure 3.

3. Voltage Control

Even though FAN8486D command uses Ic to control the magnitude of IO, it can also use voltage. FAN8486D mainly uses

voltage control and has option to use current control.

VCTL

V/I

Converter

ICTL

IO

AT

Figure 4 shows the principle of the voltage control.

Figure 4.

The VCTL is the motor speed control voltage, and the ICTL is converted to current through the V / I converter.

Figure 5 shows the graph of VCTL vs. IO.

IO

IOmax

AT

GM

0.48 × VREG (TYP)

VCTL

Figure 5.

Rev. 1.0.1

11

February. 2000.

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