TPIC2040 is a very-low noise type motor driver IC suitable for slim or ultra-slim DVD
reader/writer. This IC includes integrated current sense resistance that measures SPM current and
reduces drive system cost. The 7-channel driver IC controlled by serial I/F is optimum for driving
a spindle motor, a sled motor, a load motor, and Focus / Tracking / Tilt actuators. The spindle
motor driver uses BEMF detection for sensorless startup and control of the spindle motor
As the output stage of all channels works in efficient PWM driving, it is possible to
attain low-power operation by PWM control. Deadband less control is possible for a focus / tracking
/ tilt actuator driver. In addition, the spindle part output current limiting circuit, thermal
shutdown circuit, sled-end detection circuit, actuator protection and power-reset circuit are built
in.
TPIC2040 is a very-low noise type motor driver IC suitable for slim or ultra-slim DVD
reader/writer. This IC includes integrated current sense resistance that measures SPM current and
reduces drive system cost. The 7-channel driver IC controlled by serial I/F is optimum for driving
a spindle motor, a sled motor, a load motor, and Focus / Tracking / Tilt actuators. The spindle
motor driver uses BEMF detection for sensorless startup and control of the spindle motor
As the output stage of all channels works in efficient PWM driving, it is possible to
attain low-power operation by PWM control. Deadband less control is possible for a focus / tracking
/ tilt actuator driver. In addition, the spindle part output current limiting circuit, thermal
shutdown circuit, sled-end detection circuit, actuator protection and power-reset circuit are built
in.