ISL61853EIRZ

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ISL61853EIRZ Application Field and Working Principle

ISL61853EIRZ is a Hot Swap Manager product released by Intersil. This PMIC (Power Management Integrated Circuit) is used to ensure graceful attachment and removal of system power loads while providing superior regulator control and monitoring.

Application

ISL61853EIRZ can be used in server systems and storage systems. It is also used to power up high power systems such as graphics cards, network interface cards, and power supplies. It is designed to provide an ideal interface between a system board and peripheral board. With its powerful 10A source and sink function, ISL61853EIRZ can support a wide range of applications such as PoE, storage systems, server systems and power supplies.

Working Principle

The ISL61853EIRZ chip comprises a high voltage power MOSFET, an analog control loop, and a pre-biased hot swap regulator (HSR). The power MOSFET helps in switching the input voltage to the load, while the HSR routines monitor the voltage at the load terminal. The analog control loop provides the necessary safety between the power MOSFET and HSR while also compensating for voltage/temperature variations.

The ISL61853EIRZ chip is equipped with several protection features. This includes undervoltage, overvoltage and overtemperature protection. It also has an integrated 8-bit Programmable Overcurrent Protection (POCP) allowing for the protection of load currents of up to 10A.

The ISL61853EIRZ chip also provides several safety features such as: Burn-In mode, Soft-Start, Fault Lerp, Accurate Current Limit and Thermal Derating. Burn-In mode is used to stabilize the chip during the system warm-up period; Soft-Start prevents inrush currents and reduces startup stress; Fault Lerp enables the chip to recover from any on-going fault conditions; Accurate Current Limit stabilizes the chip\'s output current; and Thermal Derating provides protection against over-temperature conditions.

Conclusion

In summary, ISL61853EIRZ is a Hot Swap Manager product released by Intersil. It can be used to power up high power systems such as graphics cards, network interface cards, and power supplies. It comes with several protection features such as undervoltage, overvoltage, overcurrent, and thermal derating to ensure a safe and stable power distribution.

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