LM5117PSQX/NOPB

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LM5117PSQX/NOPB is a dedicated DC/DC controller, which is designed for synchronous buck application. It provides high gains, high bandwidth, and a wide range of features that enable high efficiency and performance. The LM5117PSQX/NOPB can reduce the output voltage ripple to less than 2 mV P-P. It is optimized for low output ripple and low switching frequency. It can operate up to 1,000 kHz and can be used to efficiently regulate output voltage up to 5V.

The LM5117PSQX/NOPB is an integrated high performance DC/DC controller which includes an internal PWM controller and a bias voltage regulator. The controller includes an 8-bit MCU, an 8-bit SPI/I2C interface, and an on-board 32-bit digital pulse width modulator (PWM). The wide range of operating voltage, voltage regulation accuracy, current sensing accuracy, and switching frequency makes it suitable for many applications.

The LM5117PSQX/NOPB offers a real-time current-sharing feature which helps in achieving a higher efficiency power conversion with significant power savings. It has an internal voltage regulator to provide the needed rail voltage for the control circuitry. The controller also has an internal fault protection feature which protects the module from inrush currents and system overcurrent.

The LM5117PSQX/NOPB is typically used to convert 3.3V, 5V, 12V, and 24V DC/DC sources to other lower voltage outputs with high efficiency and good output accuracy. It is an ideal choice for many Switching Regulator designs such as point of load regulators, low voltage/ high current power sources, and multiple outputs. It can also be used in systems requiring a wide range of operating parameters and extreme accuracy.

The working principle of the LM5117PSQX/NOPB is based on an average current mode control scheme. It uses PWM to actively regulate the input voltage to the desired output voltage. The integrated current-sense resistor allows the controller to compare the measured output current to the commanded output current. If the output current is too high, the controller will reduce the duty cycle of the PWM and vice versa. This regulation technique allows the module to ensure that the output voltage is maintained accurately to the desired level.

The LM5117PSQX/NOPB can also be used to regulate power to various applications with extremely fast transient response. It has an adjustable load transient response, allowing the designer to optimize the response for the specific application. The controller supports both fixed frequency and frequency hopping mode and provides fast loop response for quick transient response in both modes.

The LM5117PSQX/NOPB is designed for use in a variety of applications including high-performance computing, automotive electronics, consumer electronics, industrial automation, power management, and general purpose supply-rail conversion. To ensure that the module works at its best, it is important to properly select components for the application and verify the design results.

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