LNK6777E

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LNK6777E Application Field and Working Principle

LNK6777E is a high-efficiency, low-noise energy-saving AC/DC converter power management IC (PMIC). It belongs to the category of PMIC AC DC Converters, Offline Switchers. It is mainly used in the power management and control systems of various household appliances and industrial instrument products.

Features of LNK6777E

• Wide working temperature range from -40℃ to +85℃.
• High efficiency up to 95%.
• Low noise.
• Small size with excellent design.
• Reliable and stable performance.

Application Fields of LNK6777E

With its high efficiency and stability, the LNK6777E is widely used in the power management system of various household appliances and industrial instrument products. Its applications include:

• Air conditioners.
• Washing machines.
• Televisions.
• Industrial instruments.
• Photovoltaic inverters.
• Power adapters.

Working Principle of LNK6777E

When LNK6777E works, its internal switch instantly starts to provide AC/DC conversion power for the load. To ensure high efficiency and low noise, the integrated power factor controller (PFC) has a constant high-frequency current PWM technology to control the switch. The accurate average current mode loop is used to control the PWM duty cycle of the switch. Through this high-frequency PWM technology, the power factor of the rectifier bridge can reach about 0.96.

The low dropout regulator in LNK6777E has an embedded chip to accurately track the output voltage of the switch. The output voltage regulation accuracy of the LNK6777E can be controlled to within ± 0.5%. In addition, the chip is designed with a protection circuit, which can provide over-current protection and short-circuit protection, and make the anti-interference ability stronger.

Conclusion

The LNK6777E AC/DC converter is a high-efficiency, low-noise energy-saving PMIC that belongs to the category of PMIC AC DC Converters, Offline Switchers. It is mainly used in the power management system of various household appliances and industry instrument products. Its working principle is using an internal switch to instantly start to provide AC/DC conversion power for the load and using a chip to accurately track the output voltage and provide over-current protection and short-circuit protection for the device.

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