Rohm introduces high-performance stepper motor drivers

Rohm Semiconductor (www.rohm.com) is proud to announce the release of its new high-reliability, high-performance stepper motor drivers that offer selectable excitation modes, full-step to 16th-step with 1 A or 2.0 A output current and full-step to 8th-step with 2.5 A output current. The stepper motor drivers are now available in RS Components stocks (www.rs-components.com).

The microstep drivers allow designers to optimize vibration, noise and motor torque for a broad range of applications. The circuit design is simplified by combining the features of an internal voltage regulator, DMOS output and control input translator. Operating from a maximum single 36 V supply, Rohm advanced DMOS (Pch + Nch) output topology does away with the need for external charge pump components.

The stepper motor drivers incorporate over-voltage, thermal protection and under-voltage not typically integrated in motor driver ICs. The drivers’ packaging benefits include a bottom-side heat sinking to simplify thermal design, pin-compatibility within parts with different current ratings, as well as adjacent-pin short protection on most of the models to reduce field and production failures, said the company.

ON Semiconductor unveils two new products for industrial sector

ON Semiconductor (www.onsemi.com) is proud to announce the launch of its two important latest products specifically designed for the industrial market sector at this year’s Electronica.

Designed to enable current and next generation office and home automation applications, the manufacturer’s wide range of industrial devices provides market-leading levels of reliability and ruggedness to support the drive for high efficiency, low power design.

The all-new AMIS-30523 combines a CAN transceiver and a stepper motor driver in one package, two-die device. This one-of-a-kind configuration can be utilized to control several motors of the same type on one bus, and provides important space-saving designs where a PCB real estate is limited or where one PCB mounted on the rear side of the motor is employed. Usual applications include general purpose stepper motors in industrial, automotive, marine and medical environments.

The AMIS-30523, which has a high speed of one megabit per second (Mb/s), delivers seven step modes from full step up to 32 micro-steps.

Meanwhile, the latest NCP1090, NCP1092 and NCP1091 are Power over Ethernet Powered Devices (PoE−PD) interface controller offering reliable and cost-effective integrated detection, ‘hot-swap’ and classification control in applications such as video over IP, voice over Internet protocol (VoIP) and wireless access point (AP).

ROHM’s Microstep Motor Drivers offer reliability, high performance

ROHM Semiconductor USA LLC (www.rohmelectronics.com) is proud to introduce its new high-reliability, high-performance stepper motor drivers that offer selectable excitation modes-full-step to 16th-step with 1.0A or 2.0A output current and full-step to 8th-step with 2.5A output current. The microstep drivers allow designers to optimize motor torque, vibration and noise for a variety of applications.

The selectable current decay pattern (MIXED/FAST/SLOW decay modes) further improves motor performance. Its circuit design is simplified by a combination of features, which include an internal voltage regulator, DMOS output and control input translator. Its built-in regulator allows operation from a single 36V (max) supply. A single clock (CLK) input instead of parallel control lines is converted by the equipment’s internal translator into motor drive signals. Moreover, the advanced DMOS (Pch + Nch) output topology from ROHM eliminates the need for external charge pump components.

The new microstep drivers from ROHM are the newest addition to the ROHM Stepper Motor Driver Series. They incorporate overvoltage, undervoltage, thermal and overcurrent protection not typically included in motor driver ICs. The series features the company’s unique Ghost Supply Prevention (GSP) function, which prevents aberrant operation during off mode.

“The combination of ROHM’s advanced power semiconductor process technology and enhanced packaging has resulted in exceptional motor driver solutions. Packaging benefits include bottom-side heat sinking to simplify thermal design, adjacent-pin short protection on most models to reduce production and field failures, as well as pin-compatibility among parts with different current ratings,” said Jeremy Bridges, Field Application Engineer of ROHM Semiconductor.