LM5117QPSQX/NOPB

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The LM5117QPSQX/NOPB is a High Voltage Integrated Power Stage suitable for a wide range of applications, such as DC/DC switching controllers, voltage regulators, motor controllers, LED drivers, LED displays, and other power control applications. It is designed to provide the highest level of performance, efficiency, and reliability. The device integrates two high voltage power switches, an input rectifier, a low dropout linear regulator, and five dedicated control inputs to enable safe, fast, and efficient power conversion. The high voltage core, switching elements, voltage regulators, and other components are designed to be compatible with microprocessor-based control systems for optimal performance.

Application Field

The LM5117QPSQX/NOPB is a DC/DC, or step-down, switching controller suitable for many types of low voltage supply applications, such as those requiring stable voltage and current levels under varying conditions. The device enables efficient, fast power conversion between the input and output stages, along with providing low quiescent currents typical of synchronous buck-type converters. The device ensures safe response to fault conditions, such as output over-voltage, output over-current, input under-voltage, and thermal protection, as well as provision of accurate voltage and current trim control.

The LM5117QPSQX/NOPB can be used for a variety of applications, including non-isolated bus converters, DC/DC converters for distributed power systems, PoE (Power over Ethernet) and photovoltaic applications, hot-swap controllers for powering up and down automotive applications, and for configurable power supplies. It is also suitable for applications where high efficiency, high power density, and fast transient performance are required.

Working Principle

The overall working principle of the LM5117QPSQX/NOPB is based on a switching regulator control system, using the following main components: an input voltage rectifier, an output voltage regulator, a high-voltage switch, and a logic control circuit. The input rectifier is used to accept the input voltage and convert it to a regulated level. The high-voltage switch is then used to regulate the output voltage, by switching the input voltage onto the output at the desired frequency. The output voltage regulator is used to ensure the output is stable by constantly comparing the desired output voltage with the actual output voltage and making adjustments accordingly.

The LM5117QPSQX/NOPB also includes an integrated logic control circuit, consisting of five dedicated logic inputs, which allows for further configuration of the converter. The logic inputs are used to select and control the operating mode, detect faults, adjust output voltage and current limits, and fine tune the converter’s operating parameters. The LM5117QPSQX/NOPB is also capable of dynamic response to an external reference voltage.

Overall, the LM5117QPSQX/NOPB offers a high degree of flexibility, with a wide range of operating parameters and a wealth of configurability options. It is consequently suitable for a wide variety of applications and power conversion systems, from sophisticated high-end industrial systems to mobile/portable/consumer electronics.

The specific data is subject to PDF, and the above content is for reference