m63010fp Mitsumi Electronics, Corp., m63010fp Datasheet - Page 9

• Manufacturer Part Number: m63010fp
• Description: Spindle Motor Actuator Driver
• Manufacturer: Mitsumi Electronics, Corp.

the torque is shown in right Figure. The voltage gain[Gvo] is 1.0 [V/V].
R1= ,R2=0ohm) in forward torque directions, and the dead zone is from 0mV
to 80mV (at R1= ,R2=0ohm) .
torque directions.And the limitation function gets on when the differential
voltage of VM1(12V) to RSP is 0.5V at forward and 0.3V at reverse.
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.
The relationship between the differential voltage between SPIN and REF and
The current gain[Gio] is 2.0A/V (at sensing resistor : 0.5 ohm,and
The coil current gain under the reverse torque is the same with in forward
SPINDLE channel
Preliminary
The example of current-gain and current-limit of SPINDLE.
Rs [ ]
0.50
0.75
1.00
1.65v
CTL
Ilim1F
1.00
0.66
0.50
[A]
Ilim1R
0.68
0.34
0.45
[A]
R2
R1
R1=
R2=0 ohm
2.00
1.33
1.00
Gio*= R1 / [(R1+R2)•Rs] [A/V]
SPIN
REF
Rs
Gio* [A/V]
RSP
VM1
R1=R2
1.00
0.66
0.50
GND
SPINDLE MOTOR AND 4CH ACTUATOR DRIVER
(
HW+
HU+
HV+
HW-
9
HU-
HV-
HB
R1=2•R2
W
U
V
0.66
0.44
0.33
/
16)
Rh
MITSUBISHI SEMICONDUCTORS
5V
Reverse Torque
Dead zone
current limit
Gio
M63010FP
Ilim1F
M
Ilim1R
REV990118
Forward Torque
current limit
Dead zone
CTL -REF (V)
Gio