FAN6921MRMY Integrated Circuits (ICs)

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Power factor correction (PFC) is a process in which an external inductor or capacitor is used to regulate the current or voltage of an AC power line. This is done in order to improve the power factor (PF) of the AC line, make adjustments for certain load types, or reduce total harmonic distortion (THD) on the line. This process is commonly referred to as “power conditioning” which is the process of adjusting the power input from an AC line to better suit the needs of a device or system that requires it. The FAN6921MRMY is an example of a power factor correction device that is designed to aid power conditioning systems in addressing their various power requirements.

FAN6921MRMY is a synchronous high-voltage PFC controller IC designed to maximize efficiency and reliability in the most demanding applications. It is capable of regulating both the current and the voltage of an AC power line, making it ideal for various power conditioning systems. The device integrates a number of features to improve efficiency and system-level accuracy, including a hysteretic control, an advanced active ripple compensation, a frequency foldback feature, and a programmable OVLO or UVLO protection.

The FAN6921MRMY controller makes use of a simple hysteretic control to regulate the current in the power line. Through the use of an external inductor or capacitor, the controller is able to limit the current when it reaches a predetermined level, and then gradually raise the output voltage until the current increases again. This method is used to regulate the power factor of the power line, improve the performance of certain load types, and reduce total harmonic distortion (THD). The device can also use frequency foldback methods to reduce power dissipation and improve efficiency, and programmable OVLO/UVLO protection to protect against power surges.

In addition, the FAN6921MRMY controller makes use of an advanced active ripple compensation algorithm to help maintain good power factor at light load conditions. This algorithm works in conjunction with the hysteretic control to reduce current ripple and improve system accuracy, resulting in higher efficiency and better performance under all operating conditions. The controller also allows for the use of third-party opto-couplers and Pulse Width Modulator (PWM) circuits for additional flexibility and accuracy.

The FAN6921MRMY controller is suitable for use in a wide range of power conditioning systems, from small 12V applications to large industrial systems. Also, the device has a very low quiescent current and is able to support wide input voltages from 16V to 400V. In addition, it is very easy to replace existing controllers, as long as the power supply and the load requirements remain constant.

To summarize, the FAN6921MRMY is a high-voltage PFC controller that is designed to facilitate power conditioning and efficiency in various power systems. It is capable of regulating both current and voltage in an AC power line, making it ideal for various power conditioning applications and improving performance under all operating conditions. The device integrates a number of features, such as a hysteretic control, an advanced active ripple compensation algorithm, a frequency foldback feature, and a programmable OVLO/UVLO protection. It is suitable for a wide range of power conditioning systems, and is easy to replace existing controllers. With the help of the FAN6921MRMY, power conditioning applications will be able to maximize efficiency, optimize performance, and improve overall system protection.

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