LNK584GG-TL Integrated Circuits (ICs)

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Power management integrated circuits (PMICs) are a vital part of modern electronics as they provide power flow management for a variety of applications. The LNK584GG-TL is an example of such PMICs, capable of power conversion and switching. This article will discuss the application field and working principle of the LNK584GG-TL so as to provide a better understanding of its capabilities as an offline switching PMIC.

The LNK584GG-TL is designed specifically for offline converters and is capable of handling input voltages from 90V AC up to 265V AC. This makes it well-suited for the majority of home appliances, vehicle accessories and poE applications. Furthermore, its low profile SSOP-10 package is perfect for space conscious designs.

The LNK584GG-TL is equipped with a range of features designed to enable high efficiency, low cost economy and reliable performance. These include a Pulse Frequency Modulation (PFM) topology with a wide voltage range, while its Enable and Soft Start pin allow for logic control of the converter. As with most PMICs, the LNK584GG-TL also features over-voltage, over-temperature and over-load protection to ensure the safe and reliable operation of the power converter.

The LNK584GG-TL takes advantage of a topology known as a Flyback converter. This is a type of DC-to-DC converter that uses a transformer to transfer power from its input terminals to its output terminals. First, it converts the applied input voltage (from the AC mains) into a high-frequency AC current through a power transistor known as a “power switch”, which is then transformed and rectified by the transformer into DC voltage. The output voltage is then regulated by an output voltage control circuit, thereby providing constant output power.

To operate, the LNK584GG-TL requires a minimum startup voltage of 3V and a minimum frequency of 45kHz. Once running, the power switch will be triggered by a PWM signal with a frequency of 1kHz, resulting in an output voltage that is 40~65V for a given input voltage. The power switch will be disabled when the ENABLE and SOFT START pins are brought to a low logic level.

Overall, the LNK584GG-TL is a reliable and cost-effective offline PMIC ideal for a wide variety of applications. It offers a range of features such as a small package size, high efficiency, logic control and over-temperature, over-voltage and overload protection. It is powered by a Flyback converter topology, which is able to convert an AC input voltage into DC without the need for an isolated transformer and provides voltage regulation to ensure a constant output.

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