ISL8105IBZ-T

ISL8105IBZ-T Application Field and Working Principle

The ISL8105IBZ-T is an integrated power management solution designed to help engineers develop more advanced, efficient and reliable products in an ever-evolving industry. It belongs to the family of PMIC (Power Management Integrated Circuit) products and is in the Voltage Regulators category, specifically the DC DC Switching Controllers. This versatile device offers a variety of features, positive gate drive, high efficiency, and integrated features that help designers minimize board space and components.The ISL8105IBZ-T integrates a Pulse Width Modulation (PWM) controller with adjustable frequency, dead time and synchronous rectifier, over-current protection (OCP) circuits, and a current sense amplifier. In addition, a high frequency MOSFET (dual DMOS technology) is integrated, featuring low on-resistance RDS(on), high maximum operating current and efficiency, making it an ideal solution for high power density and low cost applications. The ISL8105IBZ-T aims to achieve high power density and cost effectiveness by combining an integrated PWM controller with a fast and low-loss power MOSFET. It can also provide high efficiency with a current limit of 1.0A (typical) and an operating frequency range of 2.5MHz to 12MHz. The ISL8105IBZ-T also features adaptive dead time with protective functions to further reduce switching losses and improve the efficient transfer of power without compromising power integrity.The ISL8105IBZ-T uses the combination of a PWM controller and a MOSFET to provide precise control over the switching of a DC DC converter. With its adjustable operating frequency, dead time and synchronous rectifier, the device can be configured with a wide range of topologies, ranging from a simple buck converter to more complex set-ups like synchronous rectifier buck, boost and flyback converter. The PWM controller is responsible for generating the switching signal for the MOSFET, based on an externally provided reference voltage. The PWM signal then passes through an adjustable dead time, ensuring the two MOSFETs are never on at the same time. The synchronous rectifier feature allows the device to be configured as a synchronous rectifier buck or flyback converter.By utilizing the integrated features of the ISL8105IBZ-T with its fast and low-loss MOSFET, engineers can build compact and high density power solutions. The ISL8105IBZ-T can be used to provide efficient control and regulation for a wide range of applications, such as in power supplies for automotive, telecommunications, networking and industrial, as well as in consumer electronics, including laptop/tablet adaptors and USB power delivery panels.