A4955GLPTR-T Integrated Circuits (ICs)

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A4955GLPTR-T is an integrated circuit designed for PMIC (Power Management and IC) for Motor Drivers, Controllers applications. This integrated circuit provides advanced features for controlling DC brushed motors, step motors and brushed/brushless servomotors, making it ideal for high-performance solutions in home and industrial automation, medical and automotive applications where a small size and low cost are desirable.

A4955GLPTR-T features an integrated dual half-bridge MOSFET drivers with integrated logic for control and protection, a half-bridge gate driver, return logic level converters, a sense amplifier, and MOSFET sensor circuits. It offers four levels of drive capability and input logic levels, and can be adapted to a variety of motor types with convenient operation and easy external circuit configuration.

The A4955GLPTR-T is designed to be able to drive two brushed DC motors, such as those used in applications like remote control cars and robots, making it ideal for low-cost, high-performance solutions. The integrated half-bridge drivers are capable of continuously driving two brushed DC motors of up to 600mA peak current for each motor. The return logic level converters make the A4955GLPTR-T compatible with standard logic supply and voltage levels.

The A4955GLPTR-T also provides thermal protection and performance monitoring via the integrated MOSFET sense amplifier circuit. The integrated return logic level converters allow it to be easily configured for differential PWM and bipolar step motor control. Additionally, the A4955GLPTR-T is capable of detecting when a motor is stalled and shut it down safely if the motor stops responding to signals.

The working principle of the A4955GLPTR-T is based on the control logic block, which is responsible for decoding input signals and turning them into logic level signals for the half-bridge drivers. The logic used by the A4955GLPTR-T is open-drain allowing each output pin to be enabled or disabled independently. The integrated return logic level converters translate logic level signals that span the full logic range, so the A4955GLPTR-T is compatible with a variety of logic families.

The A4955GLPTR-T can be configured to operate in a variety of modes and protocols depending on the application. In mode and protocol selection, the user chooses between simple speed and position control and various control signal types such as PWM, pulse-width modulation (PWM) and direction control signal types, and differential versus single ended logic signals. The motor can be enabled or disabled using the enable pin, and high current capability is provided through the use of an internal, integrated half-bridge gate driver.

The A4955GLPTR-T is a highly integrated motor driver ideal for applications such as home and industrial automation, medical and automotive applications where a low cost and small size are desirable, and provides high performance solutions for the control of brushed and brushless DC motors, step motors, and other motor types.

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