M63010FP データシートの表示（PDF） - MITSUBISHI ELECTRIC

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M63010FP

SPINDLE MOTOR AND 4CH ACTUATOR DRIVER

MITSUBISHI ELECTRIC  

Preliminary

MITSUBISHI SEMICONDUCTORS

M63010FP

SPINDLE MOTOR AND 4CH ACTUATOR DRIVER

SPINDLE channel

The relationship between the differential voltage between SPIN and REF and

the torque is shown in right Figure. The voltage gain[Gvo] is 1.0 [V/V].

The current gain[Gio] is 2.0A/V (at sensing resistor : 0.5 ohm,and

R1=∞,R2=0ohm) in forward torque directions, and the dead zone is from 0mV

to 80mV (at R1=∞,R2=0ohm) .

The coil current gain under the reverse torque is the same with in forward

torque directions.And the limitation function gets on when the differential

voltage of VM1(12V) to RSP is 0.5V at forward and 0.3V at reverse.

Therefore current-gain-control and current-limit of this IC is determined with

sensing resister value, and more detail control can be determined with setting

a gain-resister outer this IC as below.

current limit

Ilim1F

Dead zone

Gio

Reverse Torque

Forward Torque

Gio

CTL -REF (V)

Dead zone

Ilim1R

current limit

The example of current-gain and current-limit of SPINDLE.

Ilim1F Ilim1R

Rs [Ω] [A]

[A]

R1=∞

R2=0 ohm

Gio* [A/V]

R1=R2

R1=2•R2

0.50 1.00

0.75 0.66

1.00 0.50

0.68

0.45

0.34

2.00

1.00

0.66

1.33

0.66

0.44

1.00

0.50

0.33

Gio*= R1 / [(R1+R2)•Rs] [A/V]

VM1

5V

Rh

Rs

CTL

1.65v

R2

R1

RSP

SPIN

REF

HB

HU+

HU-

HV+

HV-

HW+

HW-

U

V

W

GND

( 9 / 16)

M

REV990118

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