ISL6422BERZ-T

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PMIC, short for Power Management Integrated Circuit, is an electronic device used to convert electrical energy from various sources into readily usable forms of power. Voltage Regulators, as the name suggests, enable the regulation of incoming power from one voltage level to another. Special Purpose Voltage Regulators are special types of voltage regulators that are designed with specific usage in mind, such as ISL6422BERZ-T.

ISL6422BERZ-T Application Field and Working Principle

The ISL6422BERZ-T is a low side XFET driver and power distribution MOSFET that is part of the High and Low Side Power Switch family by Renesas. It is designed to drive low side external MOSFETs in a decoupled multi-rail power systems, such as those found in servers, routers, switches, and storage systems. In these decoupled power systems, the ISL6422BERZ-T allows for independent power rail regulation, including over and under voltage protection.

The ISL6422BERZ-T is an integrated solution comprised of two high- and low-side MOSFETs and a current sense amplifier along with all of the features necessary to protect and switch the power rail. It serves as a central power distribution and control element between the redundant power supply systems, allowing for reaction and adjustment to changing performance needs. This feature, along with its extremely low on-resistance of just 10 milli-Ohms and the fact that it can be used in both 2.5V and 3.3V systems, make the ISL6422BERZ-T an ideal power regulation solution for a wide range of applications.

The ISL6422BERZ-T is also equipped with a current-sense amplifier, as well as an open-drain over-current protection (OCP) output. The OCP output can be used to inform the system of a fault condition, with the integrated Fault Detect Mode allowing the system to enter into an over-current protection mode. This feature enhances the safety and reliability of the system and prevents system failure.

The ISL6422BERZ-T decides the switching action by comparison between the power supply voltage and the internal reference voltage. When the power supply voltage reaches a predetermined voltage level, the MOSFETs switch ON/OFF to control the power delivery. This operational principle is called the hysteretic control technique, which enables the IC to control the POWER ON/OFF in a fast and stable manner. This highly efficient regulation system helps to minimize energy losses and maximize efficiency.

By offering a simple yet highly efficient solution, the ISL6422BERZ-T is a perfect choice for decoupled multi-rail power systems. Its highly integrated design ensures ease of integration, while the wide range of safety and protection features provide maximum reliability. This makes it an ideal solution for the demanding environments found in servers, routers, switches, storage systems, and much more.

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