TPS54873PWPG4

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TPS54873PWPG4 Application Field and Working Principle

The Texas Instruments TPS54873PWPG4 is an adjustable step-down switching DC/DC regulator. It is classified as a PMIC - Voltage Regulator - DC DC Switching Regulators, and is a three-channel, synchronous, configurable synchronous DC/DC converter. The TPS54873PWPG4 converter supports a wide range of output voltage and is available in a fixed-frequency burst mode, allowing tasks with a high load current to be performed without compromising on efficiency. It also has an adjustable output current limit and an integrated protection feature that protects the device from current and temperature damage.

The application field of the TPS54873PWPG4 is mainly in servers, storage, telecom, and power management applications. It can be used to supply core and system power rails in various applications. The device can also be used as a post-regulation device in non-synchronous DC/DC converter systems.

TPS54873PWPG4 Working Principle

The TPS54873PWPG4 operates in a burst mode, operating at a high frequency during normal operating conditions and dropping to a lower frequency during light load conditions. It has an adjustable output current limit and an integrated over-temperature and over-current protection features that help ensure the stability of the device.

To start, the TPS54873PWPG4 input is connected to the power supply and its output is connected to the load. The device is then initialized with the configuration parameters, such as the operating frequency, duty cycle, and operating temperature range. These parameters set the conditions of the operation.

The device uses a synchronous rectification technique to achieve high efficiency in DC/DC conversion. The output is generated by the switching of two transistors in a bridge configuration. The inductor stores energy during each switching cycle and transfers it to the output during the next cycle. The output voltage is then regulated by a control loop that compares the output voltage to the reference voltage.

The device also has an integrated protection feature that protects the device from over-current and over-temperature damage. The feature is activated if an over-current condition occurs or if the device temperature reaches a critical temperature. The device then enters a protection state, disabling the switching circuitry until the fault condition is cleared.

The TPS54873PWPG4 is a three-channel, configurable synchronous DC/DC converter that provides an efficient and robust power delivery solution for various applications such as servers, storage, telecom, and power management. It uses a synchronous rectification technique to generate a high efficiency with a low ripple output. Also, the device features an adjustable output current limit and an integrated protection feature that protects the device from over-current and over-temperature damage.

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