NSD-1202 SQUIGGLE® Motor Driver IC

Description

The NSD-1202 is a dedicated piezo motor driver ASIC capable of driving two New Scale SQL Series SQUIGGLE® motors from a single 2.8 to 5.5 VDC supply. The two motors can be controlled independently using a standard I²C interface.

An on-chip DC-DC step-up converter generates the supply voltage (24 to 40 VDC) required by the piezo-electric elements of the SQUIGGLE® motor. Four half bridge drivers create pairs of phase-shifted square waves with ultrasonic frequency in the range of 140 to 180 KHz as required to drive SQL Series SQUIGGLE® motors. For other applications, frequencies as low as 80 kHz can also be achieved with the NSD-1202 by reducing clock input.

The NSD-1202 is available in a small (4x4mm) 16-pin QFN package.

Key Features

• Wide input supply voltage range: 2.8 to 5.5 VDC
• Step-up converter to generate programmable high-voltage power supply (24V to 40V)
• 4x output driver with defined rise/fall time
• I²C interface
• On-chip registers store driver instructions
• Power-down mode for minimal power consumption in stand-by

Applications

• Digital still and HD video cameras
  • Closed loop focus
  • Closed loop optical zoom
  • Optical image stabilization
• Cell phone cameras
• Portable medical devices
• Precision instrumentation
• Miniature lock and latches
• Miniature robotics
• Microfluidic pumps and valves
• Medical and industrial endoscopes

Block diagram for NSD-1202 SQUIGGLE® Motor Driver IC