Allegro MicroSystems Europe Ltd

  A new automotive bipolar stepper motor driver IC or dual DC motor driver IC that is designed for pulse-width-modulated (PWM) control of low-voltage stepper motors and dual or single high current DC motors has been introduced by Allegro MicroSystems.

A new high accuracy Hall-effect-based current sensor IC has been introduced by Allegro MicroSystems with multiple programmable fault levels intended for industrial and consumer applications with a focus on motor control and power inverter stage applications. One of the key benefits of Allegro’s ACS720 is to provide high isolation with a reduced bill of materials made possible by the proprietary IC SOIC-16W package.

A new quad DMOS full-bridge driver IC has been introduced from Allegro MicroSystems, which is capable of driving up to two stepper motors or four DC motors. Each full-bridge output is rated up to 1.6A and 40V.  Allegro’s A5990 includes fixed off-time pulse-width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps, and DC motors in forward, reverse, and coast modes.

A new gear-tooth sensor in an optimised, industry-proven, Hall- effect integrated circuit (IC), rare-earth pellet, and high temperature ceramic capacitor in a single over moulded package has been announced by Allegro MicroSystems. The integrated capacitor reduces the need for external EMI protection.

A new three-phase brushless BLDC motor controller has been announced by Allegro MicroSystems Europe, for use with N-channel external power MOSFETs. Allegro’s AMT49413 incorporates much of the circuitry required to design a cost-effective, three-phase motor drive system with maximum supply voltages up to 50V. The device is targeted at high current BLDC motor applications for speed, position, or torque control requirements.

The programmable linear Hall-effect sensor IC, A1377 from Allegro MicroSystems Europe is designed for applications that require high accuracy and high resolution without compromising bandwidth. The new device uses segmented, linearly interpolated temperature compensation technology which greatly reduces the total error of the device across the whole temperature range.

Allegro MicroSystems Europe has released the A3916 low voltage bipolar stepper or dual DC motor driver IC.  The new device is designed for Pulse-Width-Modulated (PWM) control of low-voltage stepper motors or dual DC motors using just four external components, and is capable of output currents up to 1A per channel and operating voltages from 2.7-15V. 

The ALS31000 from Allegro MicroSystems is a unidirectional linear Hall sensor IC targeted at automotive and industrial applications such as displacement and angular position sensing which require high-accuracy operation combined with a small package size. The accuracy of this factory-programmed device is enhanced via end-of-line programming of the temperature coefficient to optimise both sensitivity and quiescent voltage output across the full operating temperature range.

A high-precision programmable Hall-effect linear sensor Integrated Circuit (IC) has been announced by Allegro MicroSystems, with an open-drain output for both automotive and non-automotive applications.The signal path of Allegro’s A1342 provides flexibility through external programming that allows the generation of an accurate and customised output from an input magnetic signal.

The release of the new family has been announced by Allegro MicroSystems Europe, as a fully integrated current sensor linear ICs in a new core-less package designed to sense AC and DC currents up to 100A. Allegro’s ACS780/ACS781 are provided in this new automotive-grade, low-profile (1.5mm thick) sensor IC package that represents the highest current density of any Allegro current sensor IC package to date. 

A new package option has been announced by Allegro MicroSystems Europe for their A119x/A119x-F (A1190, A1192, and A1193) family of two-wire, unipolar, Hall-effect switches, which can be trimmed by the user at end-of-line to optimise magnetic switch-point accuracy in the application.

Capable of driving two DC motors with outputs rated up to 3.2A, the new 40V dual full-bridge driver has been announced by Allegro MicroSystems Europe. Allegro’s A5995 device includes fixed off-time Pulse-Width Modulation (PWM) regulators for current control. Each DC motor can be controlled in forward, reverse, coast and brake modes with industry standard PHASE and ENABLE inputs.

The new A1260 vertical Hall-effect sensor IC from Allegro MicroSystems Europe is an extremely temperature-stable and stress-resistant magnetic sensing device that is ideal for use in harsh operating environments.

New from Allegro MicroSystems Europe are two new current sensor ICs that offer economical high-isolation solutions for AC or DC current sensing in industrial, commercial and communications systems.

The A8295, A8297 and A8298 from Allegro MicroSystems Europe are the latest generation of devices in a family of single and dual low-noise block (LNB) supply and control voltage regulator ICs designed for use in satellite receivers in set-top boxes and LCD television sets.

The A4960 from Allegro MicroSystems Europe is a new 3-phase sensorless brushless DC motor controller IC that incorporates extensive diagnostic and protection features. Designed for use with external N-channel power MOSFETs, the new device is ideally suited to the control of pumps, blowers and cooling fans in automotive applications.

The A6265, A6266 and A6267 from Allegro MicroSystems Europe are a new family of automotive-grade, high-current LED driver ICs with extensive diagnostics and protection features. The new devices, which are fully qualified to the AEC-Q100 Grade 0 Automotive Specification, are DC-DC converter controllers, with the A6265/A6267 configurable as either boost or buck-boost converters and the A6266 as a boost converter only.

The new A3944 from Allegro MicroSystems Europe is a low-side MOSFET pre-driver IC targeted at the automotive market.

The new A4933 from Allegro MicroSystems Europe is an automotive-grade 3-phase MOSFET pre-driver IC for the control of brushless DC motors in applications such as electronic power steering systems, engine cooling fans, transmission actuators and hydraulic pumps.

The new A8515 from Allegro MicroSystems Europe is a multi-output white LED driver for LCD backlighting in consumer and industrial displays.