LNK501PN

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LNK501PN is an advanced single-stage, fixed frequency, current-mode, PWM switching controller. It has been designed for offline AC-DC power conversion, mains-powered applications. The main application includes Fluorescent Lamp Ballast, Unipolar Switching AC-DC Power Supplies, Half-bridge Resonant Power Supplies, Bipolar Switching AC-DC Power Supplies and Buck Boost Topology, among others.

The LNK501PN has an advanced, high-performance modulation and control features that provide superior performance and maximum power savings. It is capable of achieving power savings of up to 95% and is the ideal solution for high-efficiency AC-DC power conversion applications.

The LNK501PN is integrated with a Maximum Power Point Traking (MPPT) controller which tracks the maximum output power of the power supply and optimizes it according to the environment. The MPPT controller ensures constant control of the power supply output and automatically adjusts the operating point of the power supply for maximum efficiency. Additionally, the LNK501PN supports flexible synchronous rectification and can provide up to 80% efficiency for single-stage power supplies.

The LNK501PN has a wide operating temperature range from -40°C to +125°C and is capable of providing up to 800kHz switching frequency, which helps to reduce size and simplify the layout. Additionally, the LNK501PN includes an under-voltage lockout protection, over-current/power protection, built-in soft-start and over-temperature protection, among other features.

Overall, LNK501PN provides a cost-effective, efficient and reliable solution for single-stage AC-DC power conversion applications. It is suitable for a wide range of AC devices, including home appliances, electronic equipment, lighting fixtures, automotive systems and audio-visual systems.

The LNK501PN is designed with a fixed-frequency, current-mode, PWM control technology which utilizes a low shoot-through current, peak-current-mode control, and synthesized-jitter control techniques. This control technology allows the LNK501PN to operate efficiently in a wide range of input voltages, and it also allows for low power consumption. Additionally, the fixed-frequency PWM control helps maximize the efficiencies of the conversion process by reducing unwanted switching losses of the power circuits.

The PWM control technology also includes a current-mode control loop, which monitors the output current of the power supply and adjusts the PWM signal in order to provide optimal control. The current-mode control loop reduces the number of oscillations and extends the operating range of the power supply. Additionally, the synthesized jitter control technology helps reduce electromagnetic interference and improves the current-mode control effectiveness.

The LNK501PN application is mainly suitable for fixed frequency, quasi-resonant (QR) switching power supplies used in applications like lighting fixtures, air conditioners, pumps and motors. The LNK501PN is capable of working in a range of input voltages and provides high efficiency with low standby losses. The LNK501PN also features integrated over-current/power protection, over-voltage protection, under-voltage lockout protection, and temperature protection circuit, which ensures safe and reliable operation of the power supply.

The LNK501PN is an ideal choice for applications requiring high efficiency and power savings. It offers a cost-effective, reliable and efficient solution for high-frequency, single-stage AC-DC power conversion applications. The LNK501PN is available in various packages for easy integration into various applications.

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