TPS25944LRVCR

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Power Management Integrated Circuit (PMIC) of Hot Swap Controllers is an important part of power controlling. The PMICs can help provide the necessary power to fluctuating power rails and offer fault protection to prevent current surges. The TPS25944LRVCR is an advanced Hot Swap Controller integrated with a buck power stage to provide power rail sequencing, sequencing of the power cells, and protection from current surges. It includes comprehensive fault protection, overcurrent monitoring, and single-button press configuration interface.

ThisProduct\'s application field can include server and storage systems, telecom and datacenter applications, system power throttling, power-on self-test, and field upgradeable racks. It is designed to help provide a Power On Self-Test (POST) ability that aligns with the increasing challenge of power assurance on board. This can help prevent damage to the components during POST, even in the event of a faulty power supply.

The TPS25944LRVCR can operate in a wide input voltage range of 0.8V to 5.5V and ensure fast power-up and system wake-up times. It supports output voltage range from 0.8V to 4.5V, tight 3% regulation, and high power-up sequencing. This PMIC can also provide a wide range of output currents, depending on system configuration. It can deliver up to 6.4A of output current with external pass elements and up to 5.3A without external pass elements. Other features include high efficiency, wide power-up sequencing, fast transient response, and low quiescent current.

The TPS25944LRVCR\'s working principle is based on the PMBus protocol. This protocol defines the commands and underlying communication protocol that allows remote control and monitoring of the part over a positive supply voltage of up to 5.5V. The PMBus protocol also offers access to several configuration registers and protection register, which offer top-level design parameters and protection limits.

When programmed with preset parameters, the TPS25944LRVCR can enable highest power efficiency. It features adaptive loop control, soft-start, and transition control, ensuring that the system operates at the optimal point of operation. Additionally, its system power-up sequence supports the simultaneous turn-on of multiple rails without excessive current surges. The controller also includes configurable overcurrent protection and accurate power-on reset (POR) signal. It also offers voltage tracking options that can be used to monitor the output voltage and decouple it from the input voltage.

In summary, the TPS25944LRVCR is an advanced Hot Swap Controller with a wide range of applications, including system power throttling, power-on self-test, and field upgradeable systems. It offers the ability to control several rails simultaneously and supports the PMBus protocol for communication. The device features several fault protection features, high efficiency, wide power-up sequencing, fast transient response, and low quiescent current.

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