LNK6778E

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Modern power supply design for high voltage applications such as building control systems and motor drives are becoming a demand in the industrial and commercial sectors. To meet the demands of such applications, manufacturers have developed robust, efficient, and high-performing power supplies, such as the LNK Series AC-DC converter from Power Integrations. Specifically, the LNK6778E, with its advanced and efficient design, enables multiple regulated output voltage levels, and it can operate without an external transformer and without a bulky switching power supply.

The LNK6778E is a high voltage, low power AC-DC converter that can be used in a variety of offline and isolated power applications, including lighting control systems, DC motor or stage lighting control, and switch mode power supplies. The LNK6778E possesses a number of features including wide input voltage range, high output voltage accuracy, and high efficiency, which make it suitable for offline power applications.

The basic working principle of the LNK6778E is a step-down switching converter. The LNK6778E utilizes a flyback converter topology, with a power factor corrector (PFC) to provide input power factor correction and galvanic isolation. The internal switching elements are controlled by a self-oscillating primary side controller, which senses the output voltage of the converter and adjusts the switch duty cycle so that the output voltage remains constant. Additionally, the LNK6778E also includes an active current shielding (ACS) circuit to reduce noise, eliminate current spikes, and protect the converter\'s components.

The LNK6778E can provide multiple regulated output voltage levels, including 1.5 V, 3.3 V, 5 V, 12 V, and 24V, as well as several DIP switch output voltage options. This makes the LNK6778E a great choice for providing multiple low-voltage outputs for various applications. The output voltage accuracy is 0.5% maximum and can be adjusted through an external resistor, allowing the converter to accurately maintain the output voltage in line with the load.

Regarding safety and EMI, the LNK6778E uses a basic classification design that meets IEC 60601-1 and IEC 61000-4-5 requirements. The EMI filter in the LNK6778E has been designed to eliminate unnecessary emissions and meet the standard CISPR22 Class B limits of 100dB LR/50Ω, reducing interference with local systems. Additionally, the LNK6778E comes with an overload protection, over-temperature protection, and internal soft start features, ensuring that any potential problems with the setup will be handled safely.

In conclusion, the LNK6778E AC-DC converter is a reliable and powerful device that can be used to drive a variety of applications, such as lighting control systems, DC motor or stage lighting control, and switch mode power supplies. With its wide input voltage range, high output voltage accuracy, and high efficiency, the LNK6778E is definitely an ideal power supply solution for applications that require multiple regulated output voltage levels. Furthermore, the LNK6778E also has various safety features such as an EMI filter, overload protection, and over-temperature protection, making it a secure choice for industrial and commercial applications.

The specific data is subject to PDF, and the above content is for reference