TPS54900PW

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TPS54900PW is a two-phase voltage converter controller for use in DC-DC switching regulators. It is suitable for applications such as the power supply modules of communications base stations, network access points, and other wireless infrastructure, as well as automotive electronics. The device includes two separate independent output (channel) regulators, each of which can be used with a wide range of external power stage components to provide efficient, low-power conversion of 48-V input voltage into multiple rails with different voltages.

TPS54900PW Features:

• Two-Phase Regulator Architecture
• 2 x 3-A current limit
• Programmable Overvoltage Protection
• Programmable Overcurrent Protection for Each Phase Pin
• Thermal Shutdown
• Hiccup Mode Short Circuit Protection
• Reverse Current Protection
• Operating Voltages up to 8 V

TPS54900PW Applications:

• DC-DC Converters
• Automotive Power Supplies
• Network Base Stations
• Wireless Infrastructure
• Point of Load Regulators

Working Principle of TPS54900PW

The TPS54900PW employs a two-phase voltage converter architecture in which each phase consists of a power MOSFET pair connected in series. The duty cycle of each MOSFET in the pair is independently controlled through the control signal from the TPS54900PW, allowing for efficient conversion from input to output. The MOSFETs are also supplemented with a schottky diode for fast switching and reverse current protection. The TPS54900PW features both programmable overvoltage and overcurrent protection for each individual output pin to ensure safe, reliable operation.

The TPS54900PW also provides a range of options for controlling the output voltage. It can be programmed to operate in either Pulse Width Modulation (PWM) or Pulse Frequency Modulation (PFM) modes to accommodate different operating conditions and power requirements. The TPS54900PW can also be programmed to switch to a low-power “hiccup” mode during a short-circuit event, or it can be programmed to automatically shut down. In addition, it features thermal shutdown protection to prevent damage to the device during prolonged overcurrent or over-temperature events.

Overall, the TPS54900PW offers a high-performance, low-power solution for powering low-voltage, low-current digital and analog electronics. Its two-phase regulator architecture and integrated protection features make it an ideal choice for applications such as the power supply modules of communications base stations, network access points and other wireless infrastructure, traditional automotive electronics, or any other demanding application that requires efficient, reliable power conversion.

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