Allegro MicroSystems Europe has introduced a new quad DMOS full-bridge driver IC capable of driving up to two stepper motors or four DC motors. Each full-bridge output is rated up to 1.6 A and 40 V. 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 i...

Allegro MicroSystems Europe have announced the release of a new family of two-wire vertical Hall-effect switch ICs with advanced diagnostics. Allegro’s A1130, A1131 and A1132 have been developed in accordance with ISO 26262. These devices have integrated continuous diagnostic features and a safe output state that supports a functional safety level of ASIL-B. These devices feature a two-wire current output interface that facilitates open/sho...

A new optimised Hall-effect integrated circuit (IC) and rare-earth pellet combination has been introduced by Allegro MicroSystems Europe that provides a user-friendly solution for direction detection and true zero-speed, digital gear-tooth sensing. The small package can be easily assembled and used in conjunction with a wide variety of gear-tooth-sensing applications. This new IC employs patented algorithms for the special operational requirement...

A new micropower LED driver IC has been released by Allegro MicroSystems Europe that features an integrated Hall-effect switch. The APS13568 enables compact, elegant, reliable, and fault-tolerant LED lighting with minimal electrical engineering and low component-count and cost. A single silicon chip integrates: a micropower regulator, a Hall plate, a small-signal amplifier, chopper stabilisation, a Schmitt trigger, open drain Hall-effect switch, ...

Allegro MicroSystems Europe has announced two new linear Hall-effect sensor ICs with analogue output, targeted at the automotive and industrial markets. New applications for linear output Hall-effect sensor ICs, such as displacement and angular position, require higher accuracy and smaller package sizes. Allegro’s A1308 and A1309 devices have been designed specifically to meet both requirements.

PCIM Europe 2017: Among the sensors and power ICs from Allegro MicroSystems Europe at PCIM Europe 2017 (Hall 7 stand 441), there was a preview of the A5931 motor driver IC.

A motor driver IC designed for pulse-width-modulated (PWM) control of DC motors has been released from Allegro MicroSystems. Allegro’s A5950 is capable of peak output currents up to ±3 A and operating voltages up to 40V. This new device is targeted at the automotive market with end applications to include heads-up-display, shift drive, door closure and engine thermal management applications.

A low voltage family of AEC-Q100 qualified three-wire Hall-effect latches has been announced by Allegro MicroSystems Europe. The APS12205, APS12215, and APS12235 are produced on the Allegro advanced BiCMOS wafer fabrication process, which implements a patented high-frequency chopper stabilisation technique.

Multi-output, automotive power management ICs (PMICs) with buck-boost pre-regulator converts automotive battery voltages for use in power steering and braking systems.

A new power management IC has been introduced by Allegro MicroSystems Europe, that uses a buck or buck-boost pre-regulator to efficiently convert automotive battery voltages into a tightly regulated intermediate voltage, complete with control, diagnostics, and protections. The output of Allegro’s A4408 supplies a 5V/115mA tracking/protected LDO, a 3.3V/165mA LDO, a 5V/325mA LDO, and an adjustable output synchronous buck regulator (1.25...

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.

Allegro MicroSystems Europe has introduced two new 0˚ to 360˚ angle sensor ICs that provide contactless high-resolution angular position information based on magnetic Circular Vertical Hall (CVH) technology. Allegro’s A1337 and A1338 devices have a SoC architecture that includes: a CVH front end, digital signal processing, and digital SPI and SENT or PWM outputs.

  The N-Channel power MOSFET driver capable of isolating a three phase load by controlling the in-phase isolation MOSFETs, has been introduced by Allegro.

Incorporating full die redundancy with the added benefits of full diagnostics, the A1336 from Allegro Microsystems includes a combination of these two features, which allows for a higher level of diagnostics without interruption to the application (where diagnostics would otherwise render a die temporarily unresponsive), and also allows the controller to know which die to trust when the two outputs do not agree. 

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 fu...

Any item of equipment that incorporates high voltage control components and a user interface has to be designed with safety clearly in mind in order to protect users from electric shock. Shaun Milano of Allegro MicroSystems explains.

  Allegro MicroSystems Europe has introduced an automotive, AEC-Q100 qualified single IC switching regulator that provides constant-current output to drive high-power LEDs.

A family of fully integrated current sensor linear ICs has been released by Allegro MicroSystems Europe which are in core-less packages designed to sense AC and DC currents up to 100A. Allegro’s ACS780/ACS781 are provided in this 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.

The 40V dual full-bridge driver released by Allegro MicroSystems is capable of driving two DC motors with outputs rated up to 3.2A. Allegro’s A5995 device includes fixed off-time PWM (Pulse-Width Modulation) regulators for current control.

A power management IC that can be configured as a buck or buck-boost pre-regulator to efficiently convert automotive battery voltages into a tightly regulated intermediate voltage complete with control, diagnostics, and protections, has been announced by Allegro MicroSystems Europe.