MAX8791BGTA+

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Power management integrated circuits (PMICs) are critical components in modern devices, providing the control and conversion of electrical power delivered or stored in batteries, capacitors, or other electrical sources. The PMICs range from highly integrated solutions encompassing a wide variety of power management functions, to simpler devices accomplishing only a few related tasks. A gate driver is a type of PMIC tends to simplify the design of technology by providing a single device for combining a pre-driver circuit, typically a FET or BJT, with its associated driving circuit. The MAX8791BGTA+ is one of the latest generation gate drivers providing versatile, adjustable current programming and a high level of protection for applications from notebook PCs to large motors.

MAX8791BGTA+ Overview

The MAX8791BGTA+ gate driver is a fully integrated, high-performance, adjustable gate driver solution that is ideal for AC-DC and DC-DC converter designs, as well as gate drive applications in small and medium-sized BLDC and 2-phase BLDC motors. It integrates four power MOSFETs (a high-side, low-side, and two gate driver FETs) into a single package and provides two gates with independent sources and an integrated current regulator with three output current levels and adjustable current ramp rate. The device is part of the standard power management integrated circuit (PMIC) portfolio.

MAX8791BGTA+ Features

The MAX8791BGTA+ has a variety of features designed to provide maximum performance and protection. One key feature is its integrated current tracking which allows for accurate and adjustable current level programming. This technology helps minimize the current ripple, resulting in better power conversion efficiency and improved reliability. The device also features adjustable gate drivers with variable gate rise and fall times, allowing users to tailor the timing for their specific application. Other features include programmable under-voltage, over-voltage, and over-temperature protection, as well as programmable over-current, over-current duration and over-current trip point levels.

MAX8791BGTA+ Application Field and Working Principle

The MAX8791BGTA+ can be used in a variety of applications, ranging from small mobile phones and tablets to large motors, such as those used in electric vehicles. The device is also suitable for general-purpose and low-cost microcontrollers for AC-DC, DC-DC, and dual-motor control applications. In terms of its working principle, the MAX8791BGTA+ integrates a three-phase power-stage controller, a high-side FET driver, a low-side FET driver, and two gate drivers into a single package. It provides two adjustable gate sources with independent sources, allowing users to customize the gate timing for their specific application. The MAX8791BGTA+ also includes an integrated current regulator with three output current levels to minimize the current ripple and ensure power efficiency and reliability.

The MAX8791BGTA+ is an ideal gate driver for a wide range of power management applications. It provides maximum performance and protection with its programmable protection, adjustable gate drivers, and integrated current tracking. It is an excellent choice for mobile platforms and large motors, ensuring efficient and reliable operation.

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