LNK6665K

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The LNK6665K is a highly integrated, single-chip AC-DC switch mode power supply (SMPS) offline switcher controller specifically designed for use in flyback converters. It has advanced features such as reduced EMI emissions, high power factor correction and a built-in peak current mode controller with a low start-up current. This makes it suitable for use in applications such as appliances, office equipment and lighting.

The LNK6665K can be used as a stand-alone offline PWM converter or combined with other high-performance ICs to create a low-cost, power-saving solution. It has a built-in PFC controller that enhances power factor correction, reduces harmonic distortions and increases efficiency. It also includes a peak current mode controller with a low start-up current, which enables improved dynamic response and low noise operation. The LNK6665K achieves a high power factor with minimal external components and can be easily configured to meet a wide range of power supply requirements.

The controller can generate pulse width modulation (PWM) output with a wide range of switching frequencies from 1kHz to 200kHz. It also provides an adjustable dead-time control that helps to reduce the input current noise and current stress. Moreover, it features a simple, low-noise voltage loop that eliminates the need for an external voltage reference.

The controller also features a set of protection features designed to protect the system from overvoltage, overcurrent and overtemperature. In case of an overload, the controller will shut down the converter and restart it after a fixed time delay. The controller also features a low top-off voltage for improved power efficiency and less power consumption. It also includes a frequency foldback capability that reduces the operating frequency of the converter under light or no load conditions.

The LNK6665K is optimized for use in a wide range of vertical applications and is equipped with a high efficiency PWM control loop. This allows the controller to achieve improved transient response, stability, and power efficiencies. Its PWM feature allows the use of a wide array of power stages, including standard flyback, forward, and resonant converters. Furthermore, the controller is also compatible with most popular switching regulator MOSFET drivers.

The LNK6665K’s highly integrated design enables a small overall footprint and lower component number for space-constrained applications. Overall, the LNK6665K is an ideal choice for applications requiring a cost-effective solution that delivers a high power factor and low component count.

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