LNK6768K-TL

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Integrated circuit LNK6768K-TL from Power Integrations® is a greatly efficient AC to DC converter. It works by utilizing zero-voltage switching, 100% duty cycle, and a special transformer design, these features combined allow the LNK6768K-TL to be up to 96.4% in efficiency for an input voltage of 100VAC and 110VAC. The output voltage is designed to provide both 5V and 3.3V rail voltages. The LNK6768K-TL is specifically geared towards applications requiring a combination of power and efficiency, such as PC motherboards, GPUs and other large scale processing units.

The main components of the LNK6768K-TL include the MOSFETs, the transformer, the rectifier and the controller. The controller is responsible for maintaining an optimal switching of the power stage MOSFETs and the rectifier in order to maximize efficiency. The MOSFETs that make up the power stage is able to switch to an ideal operating frequency and ensure compatibilty with the rectifier. The transformer used in the LNK6768K-TL is designed to provide electrical isolation, reduce losses and provide low output ripple as well as high ripple current capability. This combination makes for a ultra-efficient, reliable and cost-effective AC-DC power solution.

In order to maximize efficiency and reduce switching losses, the LNK6768K-TL is designed to operate with a frequency of approximately 500kHz. This frequency allows the controller to rapidly switch the power stage MOSFETs and avoid the need for large power components, such as bulky transformers or bulky capacitors. The high frequency also allows for a compact overall footprint and solution. As mentioned before, this design also inherently reduces switching losses as well with each switching cycle.

To further increase the efficiency and reduce power consumption, the LNK6768K-TL is designed to have 100% duty cycle. This means that during the course of operation, the power MOSFETs are expected to switch 100% of the time, thus preventing energy from being wasted. This energy savings can be seen in the overall power consumption of the LNK6768K-TL, which can offer up to 96.4% efficiency for an input voltage of 100VAC and 110VAC.

In conclusion, the LNK6768K-TL integrated circuit from Power Integrations is not only an efficient but a reliable solution to the power needs of applications such as PC motherboards, GPUs and other large scale processing units. It offers a combination of high efficiency, 100% duty cycle, and a special transformer design, which allows it to have an efficiency rating up to 96.4% for an input of 100VAC and 110VAC. It is also extremely compact, making it an ideal solution for applications of any size.

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