TPS2340APFPR

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PMIC - Hot Swap Controllers are devices designed to protect components connected to an AC/DC power supply by preventing over-voltage events. TPS2340APFPR is one of these Hot Swap Controllers, capable of regulating and controlling the voltage output of the power supply. Specifically, the TPS2340APFPR is designed to provide protection and control features typically found in higher power Hot Swap Controllers. It is designed to protect against unexpected hot-swap power source transients and retain its safe-state conditions following extended operation without manual intervention.

The TPS2340APFPR is based off its predecessor TPS2545, and is capable of providing over-voltage, over-current, and over-temperature protection for both DC-DC and AC-DC power supplies. Additionally, the TPS2340APFPR provides a three-state latching output that can be used to provide a source of power enable. This latching output will latch off if the item is inserted without power, and enable the power when the insertion of a power supply is detected.

The TPS2340APFPR also features built-in FET control, used to manage power transitions between external power sources. It offers low RDS(on) FET switching, reducing power dissipation. The TPS2340APFPR can be set with a power limit and over-voltage protection threshold values, providing accurate fault protection. It also provides short circuit protection mode, allowing protection during a short condition. The device has anti-lockout feature that prevents the transition of output power in the event check sum or read error occurs.

The TPS2340APFPR application field includes many AC/DC power supplies, such as mobile device chargers and adapters, data center rack solutions, network routers and server power supplies, as well as computers and hard disk drive. It also works for non-battery applications, such as industrial power supplies, automotive power systems and audio-video equipment.

The TPS2340APFPR working principle is based on its input, which includes power supply voltage, load current, and system FET for power switch control. When the power supply voltage rises above its over-voltage threshold, the TPS2340APFPR reduces the system FET’s drain-source current and will not allow the system to enter over-voltage condition. When the power supply voltage drops below the over-voltage threshold, the TPS2340APFPR will reset the system FET’s drain-source current and the system can enter into the over-voltage protection condition. In the event of an over-current, the TPS2340APFPR will reduce the system FET\'s drain-source current and will not allow the system to enter into an over-current condition.

When the power supply voltage rises above the over-temperature threshold, the TPS2340APFPR will reduce the system FET\'s drain-source current and will not allow the system to enter into an over-temperature condition. When the power supply voltage drops below the over-temperature threshold, the TPS2340APFPR will reset the system FET\'s drain-source current, allowing the system to enter into the over-temperature protection condition.

In short, the TPS2340APFPR is a Hot Swap Controller, capable of providing the necessary protection for both DC-DC and AC-DC power supplies, to ensure that the connected system remains in a safe condition. Its primary application fields are AC/DC power supplies and non-battery applications, and its working principle is based on monitoring the power supply voltage and load current, as well as controlling the system FET for power switch control.

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