BA6467FP-Y Просмотр технического описания (PDF) - ROHM Semiconductor

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BA6467FP-Y

3-phase motor driver for VCR cylinders

ROHM Semiconductor 

Motor driver ICs

FCircuit operation

(1) Hall I / O

The 3-phase Hall signal is amplified in the hall amplifiers

and sent to the matrix circuit, where the signal is further

amplified and combined. After the signal is converted to

a current in the amplitude control circuit, the current is

supplied to the output driver, which then provides a motor

drive current. The phases of the Hall input signal, output

voltage, and output current are shown in Fig.1.

BA6467FP-Y

(2) Torque control pin

The output current can be controlled by adjusting the

voltage applied to the torque control pin.

(3) Start / stop pin

The motor is in the run mode when the pin input voltage

is 3.5V or more and in the standby mode (all output tran-

sistors are off) when the voltage is 1.2V or less.

(4) Power ground pin (RNF pin)

The power ground pin is the output stage ground pin.

Connect a resistor (0.5Ω recommended) between this

pin and the ground to monitor the output current.

(5) Phase compensation pin (CNF pin)

Connect a capacitor between this pin and VCC if the out-

put tends to oscillate.

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