ISL61862CCRZ-T

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ISL61862CCRZ-T is a family of Hot Swap controllers from Intersil, a Renesas company. These controllers provide a wide range of features to simplify and optimize the hot-swap circuit for a variety of power systems. It eliminates the need for additional system components, supporting up to 28 V over-voltage protection and up to 400-W power dissipation.

The ISL61862CCRZ-T features Shorted Load Protection (SLP) to quickly help protect power systems from over-loading due to inadequate airflow or poor insulation. This device also offers Load Discharge (LD) protection to prevent large discharges of current when turning off power. This protection is especially important when powering off an over-voltaged device. Additional features such as Maximum Duty Cycle Limits (MDCL) and Free Time Limits (FTL) provide further protection to the system and its components.

The working principle of the ISL61862CCRZ-T is fairly simple. When the device’s output voltage is between its lower and upper operating thresholds, the circuit is enabled. When the voltage exceeds the upper threshold, the circuit will be disabled, shutting off the output and preventing a rise in current. The device also has an input voltage sense scheme, allowing for control of the output voltage to be adaptive to the varying input voltage supply.

In its application for hot swap controllers, the ISL61862CCRZ-T is used to regulate power system voltages, reduce the power-on time and protect the system from overvoltage events. By minimizing the power-on surge, this device is integrated into the system to reduce power consumption and improve system reliability. Additionally, its input voltage sense scheme allows the device to remain active during varying input voltage levels, ensuring system stability.

The protection features are beneficial in both resettable and non-resettable configurations. With resettable protection, any overvoltage events or overcurrents are immediately suppressed. For non-resettable applications, the ISL61862CCRZ-T supports up to 28 V output overvoltage protection. This device will also ensure a stable voltage droop is maintained during fault events up to the maximum duty cycle limits.

The ISL61862CCRZ-T integrates a wide range of features to simplify and improve the safety and reliability of hot-swap systems. Its internal high-side current-sense circuitry detects overcurrent events and its adjustable threshold allows for protection from any large discharges. Additionally, its MDCL and FTL features help prevent further damage from the system even if the output is already over-voltaged.

In conclusion, the ISL61862CCRZ-T is an excellent choice for hot-swap controllers due to its adaptable protection and system reliability. Its wide range of control and protection features aid in improving system performance and protection. The device is easy to use, as it integrates all of these functions into one simple chip, eliminating the need for additional components.

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