FAN4800ASMY-F116 Integrated Circuits (ICs)

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Power factor correction (PFC) allows power supply design to be more efficient and reliable. It is a technology used in power converters and other power supplies to take advantage of the electrical characteristics of the load. PFC is used to reduce a variety of power losses such as transformer inrush currents, time conduction losses, and EMI noise.

The FAN4800ASMY-F116 is a general purpose synchronous buck PFC controller that has been specifically designed to meet both commercial and industrial power factor requirements. It is an integrated device consisting of a synchronous buck conversion stage, an internal low-side MOSFET and a PFC control loop. The power factor, current harmonic contents and input current are regulated according to the requirements of IEC 61000-3-2 standard and EMC Directive 2014/30/EU.

The internal synchronous buck conversion stage uses a quasi-resonant switching technique to minimize EMI noise and to reduce the number of required external components. The main features of the FAN4800ASMY-F116 include an adjustable switching frequency, an integrated soft-start circuit, and an adjustable peak current limit function. It can be used in applications where the input voltage range is between 8V to 330V AC and the output voltage is up to 30V DC. The switching frequency is adjustable from 30 kHz to 600 kHz.

The FAN4800ASMY-F116 features a phase-shifted modulator topology to reach a high power factor as well as reduce total harmonic distortion (THD). This topology also allows very fast transient response and accurate dynamic loop control. The input current waveform is generated by comparing the output voltage waveform with a phase-shift of 125 degrees, thus achieving average power factor control. The FAN4800ASMY-F116 includes a very accurate line voltage and current detection circuitry, providing highly accurate current control and power factor compliance over the full input line and load range. The line voltage, line current, power factor and total harmonic distortion are monitored and can be reported via the I2C interface or through an auxiliary voltage output.

The FAN4800ASMY-F116 is capable of providing power factor correction for a wide variety of applications, from moderate to high power, where a high power factor, THD, transient response and EMI performance are required. These applications can include industrial motor drives, renewable energy, automotive and LED lighting. It is designed for use with a wide range of supplies, from low battery voltage to high mains voltage AC sources. The FAN4800ASMY-F116 is available in a tiny SOP-8 package, making it perfectly suited for space constrained applications.

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