LPS173-M

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AC DC converters are an important part of the electrical power system, and the LPS173-M is a popular example. It is designed to convert an AC power source to a DC source with a wide variety of possible applications. This article will discuss the LPS173-M\'s application field and working principle.

LPS173-M Application Field

The LPS173-M is a highly efficient AC DC converter. Its applications range from uninterruptible power supplies for critical systems to general purpose DC power supplies. It is particularly suited to applications in telecommunications and switching systems, which require reliable, high-performance power. Additionally, the LPS173-M is a perfect choice for electrified door locks, elevators, and automatic controlling systems as it provides stable and reliable performance.

In general, the LPS173-M is used in applications that require low cost and high reliability. It has a variety of features that make it suitable for these applications, such as its low power consumption, its high efficiency, and the various protections that it offers to ensure its long-term reliability. Additionally, it is designed to be resistant to extreme temperatures and fluctuations in power quality, making it a popular choice for industrial applications.

LPS173-M Working Principle

The LPS173-M employs a two-stage structure: a PFC Boost stage and a DC-DC step-down stage. This two-stage structure results in a high power factor and low total harmonic distortion (THD). The PFC Boost stage uses a synchronous rectification PFC topology to achieve high power efficiency, while the DC-DC step-down stage further boosts efficiency with its synchronous half-bridge rectification technique.

The PFC Boost is integrated with a power factor correction (PFC) circuit, which helps to reduce harmful low-frequency EMI (Electromagnetic Interference) emissions. The PFC Boost stage also offers input over-voltage and under-voltage protection, as well as power limiting and inrush current protection.

The DC-DC step-down stage of the LPS173-M is designed with an internal synchronous rectification metal-oxide-semiconductor (MOS) shot switch, which allows the converter to switch quickly and smoothly. This shot switch also helps to reduce or even eliminate switching noises. Additionally, the LPS173-M offers output short circuit protection, open circuit protection, over-voltage protection, and over-temperature protection.

Conclusion

The LPS173-M is an AC DC converter designed for a wide range of applications, from uninterruptible power supplies to general purpose DC power supplies. It is highly efficient, reliable, and features low power consumption and a variety of protections. It employs a two-stage structure, with a PFC Boost and a DC-DC step-down stage, to achieve low total harmonic distortion and a high power factor. The LPS173-M is a popular choice for applications that require high reliability and low cost.

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