ISL61851ECBZ-T

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ISL61851ECBZ-T is an Hot Swap Controller (HSC) part of Intersil‘s Smart Power Solution. It is designed to provide precise Hot Swap control, power sequencing and fault management capabilities. It features a precise high-side sense regulator and a low-side MOSFET to control power in Hot Swap applications, providing over-current protection and system fault management.

In hot swap applications, it is important to precisely control the power to the downstream devices by monitoring the current draw and minimizing the risk of overloading. The ISL61851ECBZ-T provides precise current monitoring through its two high-side sense resistors, allowing for precise current regulation. Additionally, it provides integrated fault protection for the system, including over current protection, under voltage lockout, over voltage control, thermal shutdown, and over temperature protection.

The ISL61851ECBZ-T integrates controllers, discrete FETS and sense resistors onto a single chip. It utilizes an on-chip comparator for precise monitoring and regulation of the amount of current entering the downstream device. This allows for low-power dissipation and high precision control. Additionally, it provides integrated over-voltage and under-voltage protection to prevent dangerous conditions from occurring in the system.

The ISL61851ECBZ-T is ideal for use in applications where precise power regulation and fault protection are demanded. It can be used to provide precise power control and fault protection for devices such as network backplanes, blade servers, server racks, POE switches and system fans. Additionally, it can be used to provide precise power regulation and protection for digital, analog and embedded application processor-based devices.

The ISL61851ECBZ-T features a variety of user-configurable features and protocols, including power limiting, sequential power-up/shutdown, over-temperature protection and SYNC/ASYNC operation. It supports up to 48V on the IN/OUT pin and can withstand continuous current inrush of up to 20A. Additionally, it provides thermal shutdown and programming for temperature thresholds.

Other features include an adjustable dead time for soft-start and glitch-free turn-on and off, an adjustable auto-retry, a low ripple zero-voltage-switching buck converter, and adjustable current, UVLO, OVLO and power-up/down timing. Additionally, it features a wide operating temperature range (55°C over temperature) along with excellent EMC performance.

In summary, ISL61851ECBZ-T is a highly integrated Hot Swap Controller (HSC) part of Intersil’s Smart Power Solutions. It is designed to provide precise Hot Swap control, power sequencing and system fault management through its two high-side sense resistors and integrated controllers, FETS and sense resistors on a single chip. It features a variety of user-configurable features and protocols allowing it to be used in applications where precise power regulation and fault protection are demanded.

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