ICE3A2065Z

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ICE3A2065Z is an eco-friendly, green-mode PFC controller optimized for fixed-frequency PFC applications in off-line power supply applications. It has broad input voltage range options and low standby power dissipations. The device integrates several features such as a simple current mode control, an input under-voltage lockout, slope compensation, over-voltage and over-temperature protections.

Application Field:

ICE3A2065Z is designed for AC/DC converters and offline switchers. It is best suited for off-line switching mode power supplies (SMPS) with active power factor correction (PFC) such as laptop power adapters, desktop power adapters, lighting power supplies, battery chargers and more.

Working Principle:

A PFC AC/DC converter is a circuit that rectifies a voltage signal from an AC source and performs power-factor-correction for higher power efficiency. The ICE3A2065Z is specifically designed to be used in such an AC/DC converter, as it provides all the necessary features for such a converter. The controller is a current mode PFC controller and achieves PFC by regulating the average current from the AC source such that it is in-phase with the voltage waveform of the source. This way, the waveform at the output of the AC/DC converter is a sinusoidal wave with the same frequency and phase as the incoming wave. This results in high power factor efficiency and lower THD at the input power stage.

The device also has important safety functions such as input under-voltage lockout, slope compensation, over-voltage and over-temperature protections, as well as shut-down and Power Good indicators. All of these features make the ICE3A2065Z suitable for power supplies with high power efficiency as well as a wide range of input voltage applications.

The ICE3A2065Z also has several features that make it ideal for applications that require a fixed-frequency PFC controller. These features include the output of a constant frequency current sensing signal from the zero voltage and the fixed frequency version control. The constant frequency current sensing signal helps reduce system cost, by eliminating the need for external filters. The fixed frequency version control also helps reduce EMI by keeping the switching frequency fixed.

Overall, the features and benefits of the ICE3A2065Z make it an attractive solution for high-power and high-efficiency AC/DC converters, as well as offline switchers. It is designed to work with a wide range of input voltage and provides excellent safety functions, making it an ideal choice for various power supply applications.

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