m63024 Mitsumi Electronics, Corp., m63024 Datasheet - Page 9

• Manufacturer Part Number: m63024
• Description: Spindle Motor And 5ch Actuator Driver
• Manufacturer: Mitsumi Electronics, Corp.

and the torque is shown in right Figure. The Voltage gain[GVo] is 1.0 [V/V].
R1= ,R2=0ohm) in f orward torque directions, and the dead zone is f rom
0mV to 80mV (at R1= ,R2=0ohm) .
torque directions.And the limitation f unction gets on when the dif f erential
Voltage of VM1(12V) RSP is 0.5V.
Theref ore current-gain-control and current-limit of this IC is determined with
sensing resister v alue, and more detail control can be determined with
setting a gain-resister outer this IC as below.
The relationship between the dif f erential Voltage between SPIN and REF
The current gain[Gio] is 2.0[A/V] (at sensing resistor : 0.5 ohm,and
The coil current gain under the rev erse torque is the same with in f orward
SPINDLE channel
The example of current-gain and current-limit of SPINDLE.
[ohm]
0.50
0.75
1.00
Rs
1.65V
CTL
Ilim1F
1.00
0.66
0.50
[A]
Ilim1R
0.56
0.37
0.28
[A]
R2
R1
R1=
R2=0 ohm
2.00
1.33
1.00
Gio*= R1 / [(R1+R2)XRs] [A/V]
SPIN
REF
Rs
Gio* [A/V]
RSP
VM1
R1=R2
1.00
0.66
0.50
GND
HW+
(
HU+
HV+
HW-
HU-
HV-
SPINDLE MOTOR AND 5CH ACTUATOR driveR
HB
9
W
U
V
R2=2XR1
/
0.66
0.44
0.33
17)
M63023/024/026/027FP
Rh
MITSUBISHI SEMICONDUCTORS
5V
Rev erse Torque
Dead zone
current limit
Gio
lim1F
M
current limit
REV010307
lim1R
Forward Torque
Dead zone
CTL -REF (V)
Gio