ICE2PCS03GXT

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Power Factor Correction (PFC) is a technology that is used in power systems to improve the quality of power supply. It is a feature of power converters, such as rectifiers for power supplies, that allows for improved utilization of power. The goal of PFC is to reduce the effects of reactive power in power systems, which can lead to interference with electrical radiation, higher losses on transmission lines, or voltage sags/swells. The application field of ICE2PCS03GXT is a synchronous PFC boost controller, which offers a high performance architecture designed to deliver active PFC solutions.

The working principle of synchronous rectification is based on operating the PFC in continuous conduction mode (CCM). In CCM, the control loop tracks the input voltage and drives the switching elements, typically MOSFETs,which are turned on/off at a frequency that is dictated by the control loop. A typical synchronous PFC converter consists of a boost inductor to store energy and two (sometimes four) MOSFETs, which act as switch for the boost rectifier. A feedback circuit senses the input voltage and takes corrective action to ensure the primary power factor is maintained at the desired level.

The synchronous PFC converter use MOSFETs to switch the current in the PFC instead of rectifier diodes.This results in increased efficiency and reduced power loss as the voltage drop across the MOSFETs is much less than across a diode. Furthermore, this feature leads to improved EMI performance and faster transient response. ICE2PCS03GXT employs a synchronous rectifier architecture and offers a simpler, smaller and more efficiently solution compared to an active PFC controller.

The other main feature in a PFC Circuits is the Active Clamp Reset (ACR) circuit. The ACR circuit ensures protection of the MOSFETs. This ensures the input line current is never greater than the rated primary current. ICE2P03GXT uses the ACR function, which is critical for power supplies operating over a wide input voltage range. It prevents the output current from exceeding the rated current limit, protects the circuit from overloading, and maintains protection against accidental overvoltage shut down.

The device has integrated key protection functions, including input overvoltage protection (OVP) and over temperature protection (OTP). The integrated OVP feature prevents the IC from over voltage conditions and it limits the current to within the rating of the PFC circuit. The OTP detects over temperature conditions and thus prevents the PFC circuit from operating under such conditions. These protection functions are very important in a power supplies operation.

In summary, ICE2PCS03GXT application field is a synchronous PFC boost controller which is used to improve the utilization of power, reduce the effects of reactive power in power systems, and provide higher efficiency and better EMI performance. It offers protection functions to protect the PFC from overvoltage and over temperature. Its Active Clamp Reset feature ensures that the input line current is never greater than the rated primary current.

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