AS1907C20-T

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PMIC (Power Management Integrated Circuits) are integrated circuits designed to cut down on power usage by mitigating the need for multiple discrete solutions. Supervisors are one such type of PMIC, designed to optimize the performance of an electrical system. The AS1907C20-T, a supervisor integrated circuit manufactured by Allegro Microsystems, is a high performance supervisor designed for medium voltage systems. Its features, application fields, and working principles are the focus of this article.

Features

The AS1907C20-T is a high-performance, low power consumption supervisor IC that offers over-temperature, overload, and short circuit protection. It includes a wide input voltage range (4V to 36V) as well as short-circuit and over-temperature detection outputs. It is also capable of detecting a single-phase brownout or AC line-drop with an output voltage adjustment of up to ten percent. The supervisor also comes with an analog open-drain output that can be used to indicate the system’s supply voltage, as well as an output voltage select pin that allows the user to customize the output voltage within its input range.

Applications Fields

The AS1907C20-T can be used in a variety of medium-voltage applications, such as industrial control systems, smart lighting systems, solar energy systems, and HVAC systems. The supervisor IC is suitable for medium voltage, low-power systems requiring precise power management. In addition, it is also suitable for providing over-temperature, over current and over voltage protection as well as voltage monitoring and voltage averaging.

Working Principle

The AS1907C20-T supervisor is designed to be used with a MOSFET (Metal Oxide Semiconductor Field-Effect Transistor) switch to regulate the output voltage. The supervisor will sense the voltage at the input side of the switch and activate the switch when the input reaches the supervisor’s selected voltage threshold. Once the voltage at the input side of the switch exceeds the threshold, the switch is closed and the output voltage is regulated. When the input voltage drops below the set threshold, the switch is opened and the output voltage is no longer regulated.

The AS1907C20-T is also capable of monitoring the temperature of the system. Its over-temperature detection feature will activate an output alarm when the system exceeds a specified temperature. The supervisor also includes an over-current limit feature that will limit the amount of current that flows through the system. This helps to protect the system from any damages that could be caused by power surges or overloads. Additionally, the supervisor can also be used to monitor the output voltage, as well as limit or average the output voltage.

The AS1907C20-T is an ideal solution for medium voltage systems that require precise power management. Its features and application fields make it suitable for a variety of medium-voltage applications, while its working principle allows the user to regulate the amount of current that flows through the system. Additionally, the supervisor comes equipped with a variety of safety features, such as over-temperature, overload, and short-circuit protection, that help to protect the system from any damages.

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