ISL78268ARZ

Voltage - Supply (Vcc/Vdd):	4.75 V ~ 5.5 V
Supplier Device Package:	24-QFN (4x4)
Package / Case:	24-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Phase Control, Power Good, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
Frequency - Switching:	50kHz ~ 1.1MHz
Series:	Automotive, AEC-Q100
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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Introduction

The ISL78268ARZ is an integrated circuit (IC) designed and manufactured by Intersil Corporation. It is a high-performance dc-to-dc switching controller that can be used to accurately control multiple power supplies, allowing them to work together. The ISL758ARZ features an adjustable operating frequency and powerful output drivers that can be used in highly efficient and reliable power supply designs. In this article, we will look at the application field of the ISL78268ARZ, as well as its working principle.

Application Field

The ISL78268ARZ is a versatile switching controller that can be used in a wide range of applications. It is well-suited for use in multiphase environments, such as laptops, servers, data centers, unmanned aerial vehicles (UAVs), and power infrastructure systems. It can also be used in automotive applications, including automotive infotainment systems and advanced driver assistance systems (ADAS). The ISL78268ARZ has a maximum operating frequency of 2.5 MHz, which can be adjusted for optimized power supply efficiency. Its integrated sensors are perfect for monitoring various parameters in automotive and other systems. The device also features a diagnostic alert feature that can be used to monitor and alert system operation during overload conditions.

Working Principle

The ISL78268ARZ is configured as a current-mode synchronous-rectifier switching controller. It works by sensing the voltage drop across the switch, and then controlling the output current. The current is then switched on and off at a predetermined frequency. The frequency is adjustable, and is typically set to optimize the power conversion efficiency of the system. The ISL78268ARZ contains a two-stage current regulation loop, which ensures fast and accurate current control. It also incorporates current-mode control techniques to ensure low output ripple, with excellent line and load regulation. The device also features a range of protection features, including short circuit protection, overcurrent protection, and over-voltage protection. The ISL78268ARZ is an innovative dc-to-dc switching controller that provides high efficiency and reliable operation. It is well suited for use in a variety of applications, from laptop and server power supplies to automotive systems. With its adjustable switching frequency and robust protection features, the ISL78268ARZ is an excellent choice for reliable and efficient power delivery.

Conclusion

The ISL78268ARZ is a high-performance dc-to-dc switching controller from Intersil Corporation. It is designed for use in a wide range of applications, including multiphase systems, automotive systems, and power infrastructure systems. The device features an adjustable operating frequency, powerful output drivers, two-stage current regulation loop, and a range of protection features. These features make the ISL78268ARZ an excellent choice for reliable and efficient power delivery.

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