LNK500GN-TL Integrated Circuits (ICs)

PMIC - AC DC Converters, Offline Switchers

The LNK500GN-TL is a reliable and efficient offline, AC DC converter. As the world’s smallest AC DC converter, it is capable of delivering a power density of 25 W/cm3, with high-level efficiency and low operating temperature. This makes the LNK500GN-TL ideal for a variety of applications that range from consumer electronics to industrial power requirements.

Applications

The LNK500GN-TL supports a wide range of applications, and provides a compact and efficient solution across multiple industries. It is particularly well suited for low-voltage applications, such as direct offline AC to DC conversions in consumer and commercial settings. The device is also capable of operating in continuous conduction mode (CCM) and discontinuous conduction mode (DCM) for high-voltage applications such as lighting dimming or industrial control. Additionally, the device features low-side and high-side control outputs that can be used for diagnostics and system protection.

Design Features

The LNK500GN-TL is designed to provide both compactness and reliability. The device features a wide input voltage range (85–265 Vac) and high efficiency over the entire load range (up to 93%) with an operating temperature range of -40°C to 105°C. The low conduction losses allow the device to achieve low no-load power consumption, reducing overall system energy usage. Additionally, the device includes unique over-voltage protection and over-load protection to guard against any accidental overloads.

Working Principle

The working principle of the LNK500GN-TL device is based on the standard LLC resonant converter topology. The device works by first rectifying the input AC voltage, which produces a voltage higher than the output voltage. This is followed by the resonant control stage, which controls the switching frequency and selectively switches the two-stage power converter, thus efficiently converting the voltage down to the required output level. The final stage of the device provides electrical insulation and prevents any high frequency noise from escaping to the output.

Conclusion

The LNK500GN-TL is an efficient and reliable offline, AC DC converter. Its small size and wide operating voltage range make it suitable for a variety of applications ranging from consumer electronics to industrial power requirements. The device features a wide input voltage range and high efficiency, coupled with low-side and high-side control outputs. Additionally, its LLC resonant converter topology provides low no-load power consumption and over-voltage and over-load protections to protect the device from any accidental overloads.