Toshiba adds current sensor for accurate motor control
- Autor:Ella Cai
- Solte em:2017-05-16
Toshiba has introduced a 40V/3.0A stepper-motor control IC that requires no external current-sense resistors.
The TB67S508FTG stepper-motor controller has on-chip current sensing. As a result it can eliminate the effects of resistor-tolerance errors, ensuring greater accuracy (+/-5%) and uniformity, says the supplier.
The transistors of the output bridge have very low on-resistance of 0.45Ω (typical, high-side + low-side).
The device uses dynamic current control rather than conventional mixed-decay modes, which is said to offer smooth and quiet movement over a wider speed range by maintaining accurate step control up to high speeds.
This 2-phase bipolar stepper-motor applications supports full-, half- and quarter-step resolution modes, and is available in a QFN36 package.
The TB67S508FTG stepper-motor controller has on-chip current sensing. As a result it can eliminate the effects of resistor-tolerance errors, ensuring greater accuracy (+/-5%) and uniformity, says the supplier.
The transistors of the output bridge have very low on-resistance of 0.45Ω (typical, high-side + low-side).
The device uses dynamic current control rather than conventional mixed-decay modes, which is said to offer smooth and quiet movement over a wider speed range by maintaining accurate step control up to high speeds.
This 2-phase bipolar stepper-motor applications supports full-, half- and quarter-step resolution modes, and is available in a QFN36 package.
