M63022FP 데이터 시트보기 (PDF) - MITSUBISHI ELECTRIC

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M63022FP

SPINDLE MOTOR AND 5CH ACTUATOR DRIVER

MITSUBISHI ELECTRIC  

MITSUBISHI SEMICONDUCTOR (LSI)

M63022FP

SPINDLE MOTOR AND 5CH ACTUATOR DRIVER

q Slide channel

The relationship between the differential voltage between SLIN and

REF and the torque is shown in right Figure. The voltage gain[Gvo]

is 1.0 [V/V]. The current gain 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 VM2(12V)~RSL is 0.5V.

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

determined with sensing resister value.

current limit

Forward

Dead zone

SL*IN -REF (V)

Gio

Dead zone

Gio

Reverse

current limit

CTL

1.65V

R2

R1

VM2

Rs

RSL1

Forward

SL1+

SL1IN

CTL

M

REF

SL1-

GND

Reverse

1.65V

R2

R1

VM2

Rs

RSL2

SL2IN

SL2+

Forward

M

REF

SL2-

GND

Reverse

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

Rs [Ω]

0.50

0.75

1.00

Ilim [A]

1.00

0.66

0.50

R1=∞,R2=0ohm

2.00

1.33

1.00

Gio* [A/V]

R1=R2

1.00

0.66

0.50

R1=2•R2

0.66

0.44

0.33

Gio*= R1 / [(R1+R2)•Rs] [A/V]

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