Stepper motor drivers
2 February 2011
Power Electronics / Power Management
ON Semiconductor has announced two new highly integrated driver ICs to drive high-current stepper motors. The new AMIS-30532 and AMIS-30542 micro-stepping motor drivers have high current capabilities with integrated H-bridges and are designed for motion control designs in automotive, industrial, office equipment, medical, security and marine applications.
Designed for use with two-phase stepper motors and a host microcontroller, the AMIS-30542 mixed-signal motor driver ICs provide highly accurate and reliable motor control and deliver maximum current outputs of 2,2 A continuous and 5,0 A peak. Each device integrates smart motor control capability with voltage regulation, onboard current sensing and a number of protection and diagnostic functions. This level of integration eliminates the need for external switches and sense resistors. Onboard speed and load angle feedback mitigates end of line switches and hall sensors on applications ranging from surveillance cameras, robotics, printers, industrial automation equipment and textile machines.
The new ICs feature two embedded H-bridges and connect to a host microcontroller via an SPI interface and dedicated I/O pins. Each chip provides speed and load-angle output, which allows for the accurate control of motor torque and speed as well as the creation of stall detection algorithms. Seven step modes can be configured, from full step to 32 micro-steps. An on-chip current translator is used to calculate the appropriate PWM current based on the clock signal at the ‘NXT’ input pin and the status of the direction register or input pin. The PWM current control includes automatic selection of fast and slow decay modes.
Both the AMIS-30532 and AMIS-30542 are compatible with 5 V and 3,3 V microcontrollers; the integrated voltage regulator can be used to provide microcontroller power. Each device also incorporates a microcontroller reset function and an integrated watchdog function. Thermal warning and shutdown functionality and full output protection and diagnosis capabilities are also provided.
Further reading:
Webinar – How to safeguard your load and power supply
Power Electronics / Power Management
Infineon’s latest webinar: ‘How to safeguard your load and power supply’ covers best practices with its PROFET guard products.
Read more...
IGBT7 modules deliver high power density
Power Electronics / Power Management
Microchip launches six variants of its DualPack 3 modules targeting high-growth motor drive, data centre, and sustainability applications.
Read more...
Smart energy management solutions can deliver cost savings and power security
Power Electronics / Power Management
Energy is more than a consumable; it is a critical part of daily operations and, as such, finding ways to reduce consumption without compromising productivity is essential.
Read more...
High-power DC-DC converters
Avnet Abacus
Power Electronics / Power Management
Vicor’s power modules range in power levels from 750 W up to 2 kW, with a top power density of 5 kW/in
3.
Read more...
Power MOSFET in a PowerFLAT package
Future Electronics
Power Electronics / Power Management
The ST8L60N065DM9 from STMicroelectronics is a 600 V N-channel Super-Junction power MOSFET that offers excellent performance in a compact surface-mount package.
Read more...
High-density planar power for mission-critical systems
NuVision Electronics
Power Electronics / Power Management
Vishay’s SGTPL-28 family of planar transformers offer 150 W of output power from a 28 V input forward-converter architecture.
Read more...
Microlens to increase solar panel efficiency
Power Electronics / Power Management
Researchers at the Fraunhofer ISE have recently developed a novel micro-concentrated photovoltaic module that achieves higher efficiency and reduced production costs.
Read more...
Rugged PSU for challenging conditions
Conical Technologies
Power Electronics / Power Management
Built for rugged reliability, the Mibbo MFC Series delivers stable, efficient power in environments where moisture, dust, and temperature extremes are everyday challenges.
Read more...
How dispatchable power and grid readiness are redefining the global landscape
Power Electronics / Power Management
No longer defined by megawatt capacity alone, solar projects are now being evaluated on their ability to deliver dispatchable power, enhance grid stability, and provide critical ancillary services.
Read more...
ABB’s Mission to Zero drives South Africa’s energy transition
ABB Electrification Products
Power Electronics / Power Management
ABB Electrification is charting a bold path towards a net-zero future with its Mission to Zero programme, a blueprint that combines energy efficiency, electrification, and digital innovation to accelerate the transition to clean energy.
Read more...
printer friendly version