Product category:
Power Supply ICs and Controllers
News Release from: AMI Semiconductor | Subject: AMIS-30623 and AMIS-30624
Edited by the Electronicstalk Editorial
Team on 14 December 2005
Stepper drivers seek automotive
applications
AMI Semiconductor has expanded its family of single-chip stepper motor driver and controller ICs with two new devices that incorporate sensorless stall detection.
AMI Semiconductor (AMIS) has expanded its family of single-chip stepper motor driver and controller ICs with two new devices that incorporate sensorless stall detection The new ICs will improve reliability and reduce component count, board space, cost, and development time in a wide variety of automotive and industrial motion control applications
This article was originally published on Electronicstalk on 26 Mar 2001 at 8.00am (UK)
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The new AMIS-30623 and AMIS-30624 ICs are designed for remote and multiple axes positioning applications and offer LIN and serial (I2C) interface connectivity, respectively.
Sensorless stall detection functionality allows designers to implement silent yet accurate position calibration and semi-closed loop operation when approaching mechanical end stops.
The integrated "motion qualification mode" helps application developers to select a robust set of motion parameters such as torque and acceleration-deceleration profile.
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As a result, noise and vibration at end-stops can be eliminated and motion control accuracy and reliability improved without the need for optical encoders, position sensors or software algorithms.
By offering a dedicated LIN interface, the AMIS-30623 will suit mechatronics solutions that are connected remotely to a LIN master.
The dedicated serial interface provided with the AMIS-30624 makes this device ideal for applications in which the motor controller IC is a peripheral device located next to a host microcontroller on a single PCB.
Target applications for the new devices will include headlamp levelling and swivelling, automotive HVAC designs, surveillance camera control, professional lighting equipment, industrial x-y-z tables, and manufacturing robots.
Both the AMIS-30623 and AMIS-30624 will operate at temperatures from -40 to +125C and can deliver programmable peak currents of up to 800mA.
The on-chip position controller is configurable for different motor types, positioning ranges and parameters such as speed, acceleration and deceleration.
Each device also incorporates a hold current feature, while a power down supply current of under 100uA ensures minimum power consumption in standby mode.
"The trend for automotive and industrial motion control applications is towards reduced component counts, smaller board space requirements and lower cost", said Bart De Cock, product manager of AMI Semiconductor's motor control product line.
"These new devices with integrated stall detection directly address these trends by helping engineers to eliminate additional components and design complexity".
Based on AMI Semiconductor's advanced mixed-signal semiconductor processes, the AMIS-30623 and AMIS-30624 are available in a choice of SOIC-20 or NQFP-32 packaging.
Pricing is in the region of US $4.40 per part for orders in excess of 10,000 pieces.
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