LNK353G-TL

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The LNK353G-TL is a type of AC-DC converter, specifically an offline switcher. Such AC-DC converters regulate, convert, and provide the power for a variety of applications. This article discusses the application field and working principles of the LNK353G-TL.

An entirely offline switcher consists of a power connector diode, a transformer, an oscillator, and a main switch. The power connector diode rectifies and filters the AC input and forms the DC input. The transformer boosts the voltage from the DC input and also produces the secondary voltage for feedback. The oscillator circuit produces a pulse train to control the switching pattern of the AC power, providing efficient power conversion.

The LNK353G-TL is perfect for applications with over-voltage, over-current, and short-circuit protection. Its features make it versatile and can be used to provide solutions in a variety of applications. These include white goods such as refrigerators, washers, and dryers; light fixtures; and consumer electronics.

The LNK353G-TL has two working modes, primary side control and secondary side control. In a primary side control circuit, the controller is integrated on the primary side of the transformer. This reduces the number of pins which reduces the overall costs of the circuit, and the primary-side controller eliminates the opto-coupler requirement. The secondary side control circuit offers a timing control mode and low voltage startup, providing greater reliability and stability.

The LNK353G-TL has a built-in high-speed active clamp reset circuit that helps limit the peak voltage and reduce the resonant period. This improves efficiency and output power and offers short-circuit protection. The secondary feedback circuit can be used to reduce harmonic-induced interference and also has an integrated over-voltage protection feature. The built-in soft start time helps to limit the inrush current and reduces the overall stress on the components.

The LNK353G-TL also features a frequency jitter modulator. The frequency jitter modulation helps to reduce the EMI and offers a more reliable solution compared to the traditional PWM control methods. It also has a hysteresis start-up, which helps reduce input current inrush and output voltage ripple.

The LNK353G-TL is a versatile, reliable, and efficient AC-DC converter that can be used in a variety of applications. It features two working modes, primary side control and secondary side control, and has a variety of protection features to help limit power losses and resonant period. The high-speed active clamp reset circuit and the frequency jitter modulator further improve the efficiency and reduce EMI. As a result, the LNK353G-TL is the perfect solution for a range of applications, including white goods, light fixtures, and consumer electronics.

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