M63016FP Datasheet, PDF (12/20 Pages) Mitsubishi Electric Semiconductor – Spindle Motor AND 4CH ACTUATOR Drive IC

MITSUBISHI SEMICONDUCTORS
M63016FP
Spindle Motor AND 4CH ACTUATOR Drive IC
Direct PWM operation
The spindle and the slide channel is controlled by the direct PWM control.
Analog input voltage control the driving current which is in proportion to input voltage.
This control is direct PWM control type of motor current chopper.
Also,built-in the current limit circuit. This IC controls the motor current directly.
direct PWM operation as follows;
1) The current which flows on a motor is detected, and current is supplied
from a power supply until it reaches the predetermined instruction value
to which the current is proportional to input voltage.
2) When current reaches an instruction value, an output transistor is changed and
the period coil inertia energy to a career cycle is made to regeneration using an internal path.
3) After repeat 1) and 2).
Therefore, the IC constantly surveillance and control the current value itself use sensor resistor.
Moreover, these ICs built-in current limit circuit so that protect to large current.
Thus, if input excessive control voltage, the current don't flow that settle limit current.
FORWARD Current path timing 1.
VM23
FORWARD Current path timing 2.
VM23
Rs
Rs
Current path 1
RSL
RSL
SL+
M
SL-
SL+
M
SL-
Current
path 1
GND
Current path 2
Current
path 2
Control value
GND
Control value
Io=Vrs / Rs
Motor current
carrier period
MITSUBISHI ELECTRIC CORPORATION ^{12 20}
Time
REV.011126