TPS2346PWR

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TPS2346PWR Application Field and Working Principle

TPS2346PWR is a hot swap controller IC that provides maximum power protection for a variety of industrial systems. It is used in applications such as smart grids, automotive, medical, industrial control, server and datacenter power systems. The device is a high-precision and low-dropout (LDO) linear regulator that can provide up to 3 A of adjustable voltage output. It features a wide-range input voltage, overvoltage protection, intelligent thermal management, wide operating temperature range, embedded power rail monitoring, wakeup function and various over-current protections.

Application Field

The TPS2346PWR device is designed for applications such as hot swap boards, DCDC point-of-load (POL) supplies, redundant power architectures, medical instrumentation power systems, and power-hungry industrial machinery.

The hot swap controller features a wide input voltage range and high power tracking accuracy, allowing it to be used in a variety of applications. As a result, it can be used for both low-power and high-power hot swap applications. The device also includes an overvoltage protection (OVP) and a current clamp circuit to protect against excessive load. In addition, the device supports power rail monitoring, allowing it to form a drive monitoring and current limiting protection for the hot swap circuit.

Working Principle

The TPS2346PWR device is composed of two parts: a linear modulator and a power stage. The modulator part is mainly composed of a voltage source controlled by a voltage regulator, and a comparator which compares the voltage output of the voltage regulator with the target voltage. If the output voltage is higher than the target, the voltage regulator will reduce the voltage supplied to the comparator, and if the output voltage is lower than the target, the voltage regulator will increase the voltage supplied to the comparator.

The power stage of the TPS2346PWR is composed of a MOSFET switch and a gate driver circuit. The MOSFET switch is controlled by the gate driver circuit to turn on and off the power stage. When the gate driver circuit receives an enable signal from the modulator, the MOSFET switch is turned on and the power is supplied to the load on the hot swap board. As the load changes, the current sensing circuit senses the change and sends a signal to the modulator, which adjusts the voltage regulator to maintain the output voltage at the correct level.

In addition, the TPS2346PWR also supports an over-current protection (OCP) circuit. The OCP circuit can sense any over-current condition and shut off the power stage when the current exceeds the specified limit. This ensures that the hot swap board does not suffer from over-current problems. It also supports an over-votage protection (OVP) circuit for protecting the load from excessively high voltages.

The TPS2346PWR is an ideal choice for hot swap applications where power protection is necessary. It is a high-performance device with a wide input voltage range, overvoltage protection, current monitoring and over-current protection. As a result, it is well-suited for use in a variety of industrial systems, such as smart grids, automotive, medical, industrial control, server and datacenter power systems.

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