LRS-75-5

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AC DC Converters

DC power supplies have been necessary components for most electronic devices since small battery cells often lack the necessary output voltage to operate these products reliably. DC-DC converters are used to convert unregulated AC voltage to regulated DC voltage and have found a multitude of application. It has become increasingly important to convert AC power to DC power in order to meet the rising demand from devices such as computers that require a reliable, consistent power source. The LRS-75-5 is an AC DC converter that is commonly used for a variety of applications. This article will discuss the application field and working principle of the LRS-75-5.

LRS-75-5 Application Field

The LRS-75-5 has the capability to convert various AC input voltage from ranges of 110v-240Vac to output voltage of 5Vce with a wattage of 15W. It is commonly used in myriad applications such as in automobiles, medical equipment, industrial automation, control systems, telecommunications, and electronic products. This converter is perfect for some fanless systems, or where there is a small heat load that needs low-noise power conversion. Additionally, it can be used in low power and high power board-level applications and point-of-load applications.

LRS-75-5 Working Principle

The LRS-75-5 utilizes a high frequency isolation step-down converter circuit to produce its output voltage. It uses a high-frequency transformer switch to provide necessary isolation between input and output stages. This component provides the necessary galvanic isolation necessary for safe operation without the need for a bulky and expensive isolation transformer. Capacitive energy transfer, zero voltage switching, and fast transient response are some of the features that make this converter reliable and efficient. While it is possible to control the output voltage through changing the turns ratio in the transformer, this method requires complicated external circuitry and reduces overall efficiency. Therefore, the LRS-75-5 seeks to achieve the output voltage by using the proportion control mode to control the quantity of charge stored in the inductor. This reduces both size and cost while boosting efficiency.

The LRS-75-5 AC/DC converter utilizes a highly efficient energy transfer design to convert the input AC voltage to output DC voltage. It features a microcontroller-based PWM function that ensures a high efficiency conversion and a faster response to output voltage load variations. The transformer switch provides electrical isolation that eliminates the need for a bulky and expensive isolation transformer. It also features a wide input voltage range and a wide output voltage range, allowing for flexibility in setting the desired output voltage. Additionally, it is capable of delivering significant current and channels this current to the output while providing galvanic isolation between the input and output devices.

Conclusion

The LRS-75-5 AC/DC converter is a versatile and efficient system used in many electronic devices for electrically isolated power conversion. It features a transformer-based switching circuit design to provide electrical isolation which eliminates the need for a bulky and expensive isolation transformer. The microcontroller-based PWM function ensures a fast response to output voltage load variations and a high efficiency conversion. It also has a wide input voltage range as well as a wide output voltage range, allowing for flexibility in setting the desired output voltage.The LRS-75-5 is a reliable and efficient converter that is suitable for a variety of applications.

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