M63022FP View Datasheet(PDF) - MITSUBISHI ELECTRIC

Part Name

Description

Manufacturer

M63022FP

SPINDLE MOTOR AND 5CH ACTUATOR DRIVER

MITSUBISHI ELECTRIC  

MITSUBISHI SEMICONDUCTOR (LSI)

M63022FP

SPINDLE MOTOR AND 5CH ACTUATOR DRIVER

q 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 2.0[A/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)~RSP is 0.5V.

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

lim1F

Dead zone

Forward Torque

Gio

Gio

Reverse Torque

CTL -REF (V)

Dead zone

lim1R

current limit

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

Rs [Ω]

Ilim1F Ilim1R

[A]

[A]

0.50 1.00 0.56

0.75 0.66 0.37

1.00 0.50 0.28

Gio* [A/V]

R1=∞

R2=0 ohm

R1=R2

R1=2•R2

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

Rs

Rh

RSP

HB

R2

HU+

CTL

SPIN

HU-

HV+

M

R1

HV-

HW+

1.65v

REF

HW-

U

V

GND W

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