ISL61853DCRZ-T

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ISL61853DCRZ-T is a Hot Swap® Controllers from Intersil with support for PMIC (Power Management Integrated Circuit). It is especially designed to protect power boards and other power systems from any kind of over-voltage, inrush current, or EFT events. Some of the features of this device are wide temperature range, low quiescent current, variable capacitance start-up, programmable output voltage, and remote fault sensing. This article will discuss the application fields and working principle of ISL61853DCRZ-T Hot Swap Controller in detail.

Applications:

ISL61853DCRZ-T is suitable to be used in Hot Swap® applications including servers, industrial control systems, power supplies and other power subsystems in which over-voltage, inrush current, or EFT protection is required. It has also been used in networking applications, telecom power supplies, and automotive systems (including automotive off-board products). Due to its wide temperature range of -40°C to +85°C, this controller makes it suitable for operation under extreme temperature conditions.Besides, ISL61853DCRZ-T integrates advanced features such as programmable over-voltage protection and start-up capacitance for heavier loads, as well as a low quiescent current for ultra-low power consumption. This device also features remote sensing for accurate voltage regulation, and a dynamic response to any kind of fault conditions by providing short circuit protection. Thus, it provides excellent robustness and reliability for any power management solution.

Working Principle:

ISL61853DCRZ-T provides Protection and control of high current power supplies. It integrates a N-channel MOSFET with low RDS-on resistance, suitable for a wide range of power needs. The device requires a separate power supply to drive the FET and control auxiliary sensing and power-on reset voltage. During system power up, an internal oscillator allows the device to ramp the voltage across the FET up to the maximum limit. Once the device reaches the set threshold, the FET will be turned on and the protection will be initiated. When a fault condition is detected, the device will latch off the FET and will remain in a safe state until a new power-up sequence is initiated.The device also features a programmable output voltage, allowing it to adjust the voltage during operation and start-up. It also has an adjustable inrush current limit and a programmable overvoltage protection, providing maximum flexibility and protection for the power subsystem. Furthermore, the device features a remote sensing feature, allowing it to sense the actual output voltage and regulate it with a minimum voltage difference between the two. Thus, it provides precise voltage regulation and further ensures robustness and reliability for any power solution.

In conclusion, ISL61853DCRZ-T is a Hot Swap® controller from Intersil which is specifically designed to protect and control power boards. This device is ideal for power systems such as servers, industrial control systems and automotive systems which requires over-voltage, inrush current, or EFT protection. It has a wide temperature range, low quiescent current, programmable output voltage, adjustable inrush current limit, and programmable overvoltage protection, making it suitable for any power management solution. Lastly, it also features remote sensing for accurate voltage regulation, providing excellent robustness and reliability for any power system.

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