PFS7527H

Series:	HiperPFS™
Packaging:	Tube
Part Status:	Active
Mode:	Continuous Conduction (CCM)
Frequency - Switching:	22kHz ~ 123kHz
Voltage - Supply:	10.2 V ~ 15 V
Operating Temperature:	-40°C ~ 150°C
Mounting Type:	Through Hole
Package / Case:	16-SSIP, 13 Leads, Exposed Pad, Formed Leads
Supplier Device Package:	eSIP-16D

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What Is Power Factor Correction (PFC)

Power factor correction (PFC) is a method of improving the power factor of a power system by compensating the reactive power produced by the load and making it equal to the active power drawn from the utility. It is an important component of the overall power system, as it is responsible for improving efficiency, reliability, and performance.

The PFS7527H Application Field and Working Principle

The PFS7527H is a high-efficiency and low-noise medium-power current-mode PFC controller IC from the Power Factor Correction (PFC) family. It is developed to form a highly-integrated and cost-effective PFC solutions for typical AC/DC switch power supplies.The PFS7527H designed for 85-277Vac with universal input voltage. This PFC Controller’s features include a programmable input high voltage current limit, 90% efficiency, high frequency capacitive current-mode control, synchronous rectification, integrated lead –lag compensation, continuous output current monitor and thermal shutdown protection. All these features allow the PFS7527H to provide a high-performance, high-efficiency, compact, and low-cost solution for medium-power applications.The working principle of the PFS7527H is determined by controlling the input current adaptive to a sinusoidal waveform. The core PFC loop control circuit uses a variable reference current to perform far-ahead current control according to the input voltage and output voltage feedback, which improves the efficiency and reduces the noise. The current sense resistor on the primary side of the PFC performs an AC-to-DC conversion, so it senses the RMS input current of the system.

Advantages of the PFS7527H

The PFS7527H has a number of advantages over other types of PFC controllers, such as:1. Higher efficiency: The PFS7527H is an advanced PFC controller with high efficiency of up to 90%. This feature helps to reduce energy consumption, making it an ideal choice for cost-efficient applications.2. Faster response times: The chip has a very fast response time of 125us that enables it to react quickly to changes in input voltage or output current. This helps to ensure the system’s safe and reliable operation.3. Excellent immunity to noise: The PFS7527H is highly resistant to electrical noise and interference, ensuring optimum performance.4. Improved safety: The PFS7527H incorporates advanced protection features such as thermal shutdown and output current monitor. These features ensure the safe operation of the system.

Conclusion

The PFS7527H is a high-performance and high-efficiency PFC controller IC from the Power Factor Correction (PFC) family. With universal input voltage and features such as high efficiency, fast response time, excellent noise immunity, and enhanced safety features, it is an ideal choice for medium-power applications.

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