UCC28019AD

Series:	--
Packaging:	Tube
Part Status:	Active
Mode:	Continuous Conduction (CCM)
Frequency - Switching:	65kHz
Current - Startup:	100µA
Voltage - Supply:	10 V ~ 21 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	UCC28019A

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Introduction

Power Factor Correction (PFC) has become increasingly important in today’s world of electricity and electronics, as power supply designs become more complex and the demand for higher system reliability continues to increase. To meet these demanding requirements, power supply design engineers must factor in how much power factor correction they need, how much current will be required to achieve optimal efficiency, and how much time it will take to achieve power factor correction.The UCC28019AD is a multi-step PFC controller designed for simple and easy implementation of power factor correction in power supply systems. It offers significant advantages over more traditional approaches to power factor correction, including multiple integration levels, flexibility, modularity, improved reliability and efficiency, low noise and low system cost.

UCC28019AD Application Field and Working Principle

UCC28019AD is mainly used for intelligent AC-DC offline power supply, computer motherboard power supply and other applications. It can provide AC motor drive, UPS (uninterruptible power system) and other non-isolated DC-DC topologies.The UCC28019AD provides a two step control scheme, with both line and load regulation control loops. The line control loop is used to regulate the AC line voltage, while the load control loop is used to regulate the output current. The two control loops are used to provide the needed power factor correction.The UCC28019AD includes a programmable power-factor algorithm, which can be tailored to the needs of the system. The UCC28019AD also includes an adjustable start/stop threshold, which can be adjusted to lower the inrush current for start-up and to also reduce the power dissipated at the end of the time period when the power is being used.

Conclusion

The UCC28019AD is a versatile and reliable two step power factor correction (PFC) controller that provides multiple integration levels. It offers excellent flexibility, modularity, improved reliability and efficiency, low noise, and low cost. It is ideal for use in intelligent AC-DC offline power supplies, computer motherboard power supplies, and other applications requiring power factor correction.

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