ISL8117FVEZ-T

ISL8117FVEZ-T Application Field and Working Principle

The ISL8117FVEZ-T is a rugged, single-phase, non-isolated synchronous buck controller that offers superior dynamics, efficiency and high DC accuracy performance. It contains a series of integrated components and functions to provide an optimal solution for DC-DC power regulation and load regulation. The product is specifically designed for the Synchronous Buck converter operating in the 3.3V~18V input voltage range and is capable of delivering up to 20A.

It is a cost-effective solution for System on Chip (SoC) based applications, such as networking routers and switches, set top boxes and consumer electronics. The device features constant on-time regulation, offering excellent line and load regulation in a very compact (4mmx4mm) QFN package. The ISL8117FVEZ-T is also well suited for mobile applications where RDSon, light weight, small surface area and minimal thermal dissipation are critically important.

Additionally, the ISL8117FVEZ-T boasts several key features that are essential for a superior DC-DC buck controller. It is a single-loop synchronous buck controller that has a current mode control with fixed frequency and pulse-width modulation (PWM) options. The integrated PWM controller enables precise regulation and fast transient response, while the internal soft start capacitor provides smooth startups. The output of the synchronous Buck converter is designed to be connected directly to a low heat generating highly efficient coordinated MOSFET driver.

Moreover, many adjustable settings are available such as output voltage, current limit, frequency and soft start capacitance. In addition, the ISL8117FVEZ-T features features safety system protections that are necessary for reliable operation. This includes undervoltage lockout (UVLO) that prevents the device from operating when the input voltage is lower than its turnoff threshold and an over current protection (OCP) that turns off the PWM when the load current exceeds the OCP limit.

In summary, the ISL8117FVEZ-T is a single-phase, non-isolated DC-DC buck controller that is capable of delivering up to 20A with excellent line and load regulation. Its features include a series of integrated components and functions to provide an optimal solution for DC-DC power regulation and load regulation. This synchronous buck controller is cost-effective and well suited for applications such as networking routers and switches, set top boxes and consumer electronics. It is robust, highly efficient and well equipped with key features necessary for a superior DC-DC buck controller.