ADM1278-1ACPZ-RL

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The ADM1278-1ACPZ-RL is a two-phase synchronous hot-swap and power-distribution integrated circuit (IC), designed to provide high-current DC power supply and control for advanced, high-power systems. It integrates the functions of power-on, power-fail monitoring, short-circuit protection, over-current protection, current-sharing, and soft-start in a single package. This IC is ideal for providing reliable power-on and power-fail control for various FPGA, ASIC, and microprocessor application.

The ADM1278-1ACPZ-RL is designed to control the sequencing and power management of a two-phase, Hot Swap system. It is a complete Hot Swap control and power distribution solution that allows the system card to be connected and/or disconnect from the host system during an active power transition. It provides short-circuit and over-current protection, and current-sharing, and soft-start capabilities in a single package.

The ADM1278-1ACPZ-RL features a two-phase synchronous control architecture, with controls for both the PWR_EN signal and the power fail signal on the system load. Additionally, it incorporates a power-on reset signal and a power-fail monitoring signal. Additionally, the IC includes thermal and over-current protection, as well as programmable current limiting and soft-start capabilities.

The ADM1278-1ACPZ-RL works by actually controlling the powerup and powerdown sequence of the system load, meaning it will monitor the power supply before turning on and/or disconnecting the system load. During the powerup and powerdown sequence, it will also monitor and detect over-current and short-circuit conditions, thereby providing protection to the system load. When a fault condition is detected, the IC will shut down the system load, preventing any further damage.

A further essential feature of the ADM1278-1ACPZ-RL is its current-sharing capability. With current-sharing, the IC will monitor the current on each phase for balance and protection, in order to maintain the operating temperature of each component within the system. The exact current limit can be programmed to achieve the desired temperature control and power sharing between the two phases.

In addition to power-on, power-fail and current-sharing capabilities, the ADM1278-1ACPZ-RL also provides a soft-start capability. This ensures that when power is applied to the system, the load slowly increases, starting from a minimum set current level, thereby protecting the system load from any overload or shock. This helps elimate any user-induced overload or under-load conditions, thus increasing the life of the system.

The ADM1278-1ACPZ-RL is an ideal solution for hot-swap and power distribution applications. It provides high-current DC power supply and short-circuit, over-current, and thermal protection functions in a single package, simplifying the system design and allowing for improved system reliability. With its current-sharing, soft-start, and power-on/power-fail features, it is a cost-effective solution for advanced, high-power systems.

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