ISL61852HCRZ

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ISL61852HCRZ Application Field and Working Principle

ISL61852HCRZ is a highly reliable hot swap protection and control device produced by Intersil Corporation, a subsidiary of Renesas Electronics. It optimizes board space and system reliability, making it suitable for a variety of usage scenarios such as PC motherboards, servers, storage systems, and other power-sensitive and high-availability applications.

Overview

ISL61852HCRZ is a high-performance hot swap controller designed for use in distributed power systems. It enables safe and reliable hot-swapping of loads up to 50 A, making it an ideal solution for any system with high-end computing requirements in an environment where Hot swap is required. In addition, its current monitoring, over-temperature protection, and under-voltage lockout functions ensure safe and reliable operation.

This device is built on advanced CMOS process technology and provides high-accuracy voltage and current monitoring with a maximum resolution of 0.39%. It features programmable voltage and current threshold levels and adjustable SSR delay times, providing system designers with the flexibility to match their application requirements.

Applications

ISL61852HCRZ can be used in a number of applications that require reliable power control and protection. Typical uses include industrial and telecom systems, distributed power systems, portable devices, computing devices such as PCs, servers, and storage systems.

The controller is also used in automotive systems, including in-vehicle infotainment systems and other power-sensitive and failure-sensitive applications. It is an ideal solution for applications that require a compact, high-performance hot-swapping controller for distributed power systems.

Working Principle

The ISL61852HCRZ device is designed with a modular architecture. It contains four functional blocks: a current monitor, a voltage monitor, an over-temperature monitor and a SSR delay control. Each block is designed to check and monitor its own parameters, while the two main components, the current and voltage monitor, provide the core functions.

The current monitor is capable of monitoring up to 50 A current. It features adjustable threshold levels, which can be programmed via a digital-to-analog converter. When the current is above or below the threshold levels set by the user, the corresponding pin goes low. This can be used to trigger a microcontroller or digital logic device to act accordingly.

The voltage monitor is used to detect the changes in the load or system voltage. It features adjustable threshold levels, which can be programmed via a digital-to-analog converter. When the voltage is above or below the threshold levels set by the user, the corresponding pin goes low. This can be used to trigger a microcontroller or digital logic device to act accordingly.

The over-temperature monitor monitors the temperature of the device. It has adjustable threshold levels and can be used to shut off the output of the device, if the temperature exceeds the specified threshold. The SSR delay control allows the system designer to set the time for when the output of the device is turned on or off. This feature is typically used in applications where the power-up or power-down sequencing needs to be controlled.

Conclusion

ISL61852HCRZ is a highly reliable Hot Swap controller that is suitable for a wide range of applications, including industrial and telecom systems, distributed power systems, and high-end computing systems. Its four functional blocks provide robust protection and reliable operation. Additionally, its programmable voltage and current thresholds, adjustable SSR delay times, and over-temperature protection ensure safe and reliable operation.

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