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e-power Journal > News > Focus > Motor Control > A compact stepper motor driver reduces space and makes design easier
Motor ControlNews

A compact stepper motor driver reduces space and makes design easier

Giovanni Di Maria
Giovanni Di Maria October 11, 2022
Updated 2022/10/11 at 9:04 AM
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An ultra-compact and highly integrated stepping-motor driver has been made available by Toshiba Electronics Europe GmbH. It helps to reduce the BOM and time to market while helping to miniaturise product designs and improve reliability. The new integrated circuit (IC), designated as TB67S549FTG, may operate with output voltages between 4.5 and 33 volts and up to 1.2 amps of operational current. It is perfect for use in a variety of constant current control stepper motor applications, such as those for commercial and industrial machinery as well as office automation. Projectors and security cameras may both use it. Under every circumstance, the integrated ADMD system ensures effective PWM current control. Up to 32 micro steps can be realised using the built-in clock interface.

It saves circuit-board space and money since it only takes up 64% of the mounting area of its predecessor IC, which is housed in a 4mm by 4mm QFN24 package. Further decreasing circuit size and component count is the internal monitoring circuitry for constant-current control, which eliminates the requirement for an external current sensor resistor and also incorporates the charge-pump capacitor.

The motor driver output block’s ON-resistance, which is typically just 1.2 ohm despite the lower package size, keeps power dissipation low and allows for higher efficiency. Additionally, it offers a sleep mode that uses less energy and reduces current consumption to under 1 A, making it suitable for many 12V/24V power supply applications. The device also has a full range of protective features, such as undervoltage lockout, thermal shutdown, and overcurrent monitoring. Both the stepping motor IC and a small evaluation board are offered. The Stepper 12 Click board, developed in collaboration with MIKROE, is backed by a mikroSDK-compliant library and streamlines software development.

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TAGGED: driver, motor, stepper
Giovanni Di Maria October 11, 2022
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