MIC2582-JYM-TR

The MIC2582-JYM-TR is an integrated hot swap controller developed by Micrel, Inc. It is a monolithic IC specifically designed to provide circuit protection and hot swapping for protected power supplies. This integrated solution provides a robust current limit feature, allowing high levels of inrush current protection and avoids the need for external components.

The MIC2582-JYM-TR is designed primarily to protect hot-swapped or inserted loading applications by preventing current surge while providing protection from an overvoltage condition. This hot swap controller features an actively controlled switch, supporting gate charge control and gate current protection. It is designed to control the flow of current during hot swapping, ensuring that components are not subjected to voltage surges. The goal is to protect the connected devices from thermal, current limits, inrush currents and other damaging effects that can occur during power up or insertion of load.

The MIC2582-JYM-TR features an integrated NMOS power switch and features a maximum supply voltage of 24V. The IC also features two analog inputs, two PWM controlled gates, an adjustable current limit switch and an adjustable overvoltage protection circuit. The IC also features a clock input, enabling it to be driven by an external source or the clock source can be generated internally. In addition, the integrated overvoltage protection safeguards the IC circuitry. The IC also includes a dedicated circuit to monitor the amount of voltage being input to the IC chip.

The device is ideal for hot swapped or plugged in systems, such as notebook computers and servers, allowing the user to replace faulty components without having to shut down the system. Applications include power over Ethernet (PoE) switches, power factor correction (PFC) applications, DC/DC power converters, and isolated voltage output systems.

The MIC2582-JYM-TR features a wide operating range from 4V to 24V and a switching frequency of up to 500 kHz. The overvoltage protection circuit supports up to 32V from a 24V system and features adjustable parameters such as current limit, VCC on detection and output delay. The adjustable current limit protects the load from excessive currents, which can potentially damage the load or the controller.

The MIC2582-JYM-TR works by using a low on-resistance, actively controlled power switch. This switch is controlled by the gate, allowing the gate voltage to be controlled in order to limit the current consumed by the load. The user can adjust the current limit and the turn-on time of the switch by changing the gate voltage or the output delay. When the voltage or current reaches a predetermined value, the switch closes and the current stops.

When an overvoltage condition is detected, the MIC2582-JYM-TR responds by quickly switching off the power supply. The IEEE 802.3af compliant power system will detect the overvoltage and disconnect the load before any damage occurs. The MIC2582-JYM-TR features a fast, low latency "turn off" capability, enabling the power supply to shut down before the load is damaged.

In summary, the MIC2582-JYM-TR is a powerful integrated circuit designed to provide hot swapping protection and current limit features in a range of hot swap applications. This integrated solution provides a full-featured and highly reliable solution for a variety of systems that require current and voltage protection.