Motor driver released for Squiggle micro motors
An
Orlin Technologies product story
Edited by the Engineeringtalk editorial team
Oct 10, 2008
New Scale Technologies has introduced the NSD-1102 dedicated piezoelectric ASIC motor driver for its Squiggle micro motors.
The NSD-1102 can drive one or two SQL-1.8 Squiggle motors from a single 2.8 to 5.5 VDC supply.
System designers can control two micro motors independently using the ASIC's standard IC interface.
The piezo motor driver is housed in a 4 x 4mm 16-Pin QFN package.
This matches the scale of the 1.8 x 1.8 x 6mm Squiggle motor, facilitating integration into miniature products such as phone cameras, medical devices, tiny optical systems, micro-robotic instruments and electronic locks.
The NSD-1102 driver has a 6mm travel range, 0.5 micrometer resolution, speeds greater than 7mm/sec and stall force of 30g.
The NSD-1102 includes an on-chip DC-DC step-up converter and four half bridge drivers to create pairs of phase-shifted square waves with ultrasonic frequency to drive the Squiggle micro motors.
On-chip registers store driver instructions.
A power-down mode means minimum ASIC power consumption in stand-by, or the power can be turned off entirely and the Squiggle motor will hold its last position.
The motor and drive circuit draw 100mW to 900W when moving, depending on motor speed and load.
The NSD-1102 is also available on the MC-31DB driver, a printed circuit board which includes input/output connectors and all passive components necessary to drive one or two Squiggle motors using the IC interface.
The ASIC and passives occupy a 6 x 9mm footprint on the board.
The MC-31DB can be used for system evaluation, as a reference design, or for integration into OEM systems.
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