LNBP21PD

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LNBP21PD Application Field and Working Principle

Pulse width modulation (PWM) offers an efficient and cost-effective way to power applications such as server systems and other power use cases requiring adjustable current and voltage output. Pulse width modulation also offers an efficient solution for power converters. In this article, we will discuss the application field and working principle of the LNBP21PD, a pulse width modulation integrated circuit designed for DC-DC power conversion.

Application Field of the LNBP21PD

The LNBP21PD is a controller IC designed to control output voltage and current of DC-DC power converters on fifth-generation (5G) server systems and other power applications. It is the ideal choice for 5G server systems and other applications that require voltage and current regulation due to its high efficiency and long term high power delivery capability. Furthermore, the LNBP21PD features pulse width modulation with frequency regulation capability, which makes it an excellent choice for automatic voltage and current regulation. As such, it is the suitable device for applications requiring low noise and robust performance with complete protection from ground fault overcurrent and overvoltage protection.

Working Principle of the LNBP21PD

The LNBP21PD integrates a pulse width modulation (PWM) controller, two buck converters, overload current protection and a high-voltage start-up circuit. The pulse width modulation output function is capable of providing a constant output voltage and current for any given load variation. The PWM controller also provides frequency regulation, allowing for additional control of the power conversion process. The integrated buck converters operate in multi-phase parallel mode and provide accurate current sense and protection from output overload current. Furthermore, the LNBP21PD is equipped with a high-voltage start-up circuit, which prevents the device from start-up malfunction and outputs voltage levels that are lower than the rated input voltage.

The LNBP21PD also features several advanced characteristics that make it suitable for a variety of power applications.First, its powerful voltage positioning capability ensures that the output voltage is maintained within its rated range. Second, the PWM controller offers adjustable cycle-by-cycle current fold-back, with adjustable slope and delay times that ensure improved efficiency and stability of the power conversion process. Third, its wide operating temperature range and input under-voltage lockout make the LNBP21PD an ideal solution for extreme environments. Finally, the device also features short-circuit protection, output voltage soft-start and under-voltage lockout for an improved level of safety and reliability.

Conclusion

The LNBP21PD is a powerful integrated circuit designed to control the power supply of 5G servers and other power applications. It utilizes pulse width modulation and frequency regulation to regulate voltage and current output and its integrated buck converters provide overload current protection and stability. Additionally, the device features several advanced characteristics such as voltage positioning, adjustable cycle-by-cycle current fold-back, wide operating temperature range and input under-voltage lockout. All these features make the LNBP21PD an ideal choice for high efficiency and reliable power conversion.

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