PFS708EG

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Modern power converters that operate at high switching frequencies require power factor correction (PFC) to meet the harmonic regulations of an electric utility\'s grid. The power line current must be sinusoidal, in phase with the voltage in order to meet the power line voltage regulations and prevent harmonic distortion. Power Factor Correction (PFC) is a technique for making the power delivery of a device more efficient and simpler. The PFC circuit measures the instantaneous power applied to the AC line in order to ensure the AC line voltage and current waveshapes are in phase.

PFS708EG is a PMIC (power management IC) designed for the power factor correction (PFC) applications. Its operating principle and features are designed to be compliant with the harmonic regulations of power supplies and electrical equipment, such as adaptors and engineering systems. This PMIC allows switching power supplies to deliver power efficiently and eliminates errors due to improper power input, including phase angle errors and harmonic distortion.

The PFS708EG works by measuring the input line in order to ensure the AC line voltage and current are synchronized. Then, using the Pulse Width Modulation (PWM) technique, the PMIC regulates the voltage on the output side, so the optimal amount of current is requested from the power source. This adjusts the amount of power delivered by the power source to the needs of the device.

The PFS708EG includes a variety of features that make it a reliable solution for power factor correction applications. Outstanding features of this PMIC include:

• Internal Over-Voltage Protection that prevents excessive power delivery.
• Voltage Balance Indication, which indicates when the output voltage is in balance with the input.
• Safety Under-Voltage Lock Out (UVLO) to protect against low supply voltages.
• High Frequency Operation that enables fast and reliable switching.
• Wide Supply Range of 4.7V to 41.8V to support a wide range of input technologies.
• High Efficiencies of up to 94% for minimal power losses.

The PFS708EG is an excellent solution for a wide range of applications that require a reliable power factor correction solution. It is ideal for a variety of consumer, automotive and industrial applications, such as LCD TVs, computer peripherals, retail point of sale systems, and battery-based equipment. It is equipped with various on-chip features that ensure reliable operations, such as thermal protection and over-voltage protection (OVP), and is available in a wide range of package types to meet the requirements of any application.

In conclusion, the PFS708EG power factor correction PMIC is a reliable and efficient solution for a variety of power conversion applications. It is designed to meet the harmonic regulations of power supplies, while also minimizing power losses and ensuring reliable and safe operations. The PFS708EG offers wide supply range, high efficiencies, and over-voltage, under-voltage, and thermal protection capabilities to meet the specific requirements of any application.

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