M63020FP データシートの表示（PDF） - MITSUBISHI ELECTRIC

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M63020FP

SPINDLE MOTOR AND 5CH ACTUATOR DRIVER

MITSUBISHI ELECTRIC  

MITSUBISHI SEMICONDUCTORS

M63020FP

SPINDLE MOTOR AND 5CH ACTUATOR DRIVER

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) to RSL is 0.5V.

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

sensing resister value.

current limit

Dead zone

SL*IN -REF (V)

Forward

Gio

Dead zone

Gio

Reverse

current limit

CTL

1.65v

R2

R1

VM2

Rs

RSL1

SL1+

SL1IN

REF

SL1-

GND

Forward

CTL

M

1.65v

Reverse

R2

R1

VM2

Rs

RSL2

SL2+

SL2IN

REF

SL2-

GND

Forward

M

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

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]

(10 / 17)

REV990726

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