M63024 데이터 시트보기 (PDF) - Mitsumi
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M63024 Datasheet PDF : 18 Pages
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MITSUBISHI SEMICONDUCTORS
M63023/024/026/027FP
SPINDLE MOTOR AND 5CH ACTUATOR driveR
SLIDE channel
The relationship between the dif f erential 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 f orward torque directions, and the dead zone is
f rom 0mV to 80mV (at R1= ,R2=0ohm)).
The coil current gain under the rev erse torque is the same with in
f orward torque directions.And the limitation f unction gets on when the
dif f erential Voltage of VM2(12V) RSL is 0.5V.
Theref ore current-gain-control and current-limit of this IC is determined
with sensing resister v alue.
current limit
Dead zone
SLIN -REF (V)
Forward
Gio
Dead zone
Gio
Revers e
current limit
VM2
VM2
CTL
1.65V
R2
R1
Rs
RSL1
SL1+
SL1IN
Forward
CTL
M
REF
SL1-
GND
1.65V
Rev erse
R2
R1
Rs
RSL2
SL2+
SL2IN
Forward
M
REF
SL2-
GND
Rev erse
The example of current-gain and current-limit of SLIDE.
Rs
[ohm]
0.50
0.75
1.00
Ilim [A]
1.00
0.66
0.50
Gio* [A/V]
R1=
R1=R2
R2=0 ohm
R2=2XR1
2.00
1.00
0.66
1.33
0.66
0.44
1.00
0.50
0.33
Gio*= R1 / [(R1+R2)XRs] [A/V]
( 10 / 17)
REV010307
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