UCC28501NG4

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Mode:	Average Current
Frequency - Switching:	80kHz ~ 120kHz
Current - Startup:	150µA
Voltage - Supply:	9.7 V ~ 18 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Through Hole
Package / Case:	20-DIP (0.300", 7.62mm)
Supplier Device Package:	20-PDIP
Base Part Number:	UCC28501

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Introduction

Power Factor Correction (PFC) is a crucial part of power management in modern power systems. The UCC28501NG4 is a monolithic controller intended for use in all kinds of power management systems, such as Power Factor Correction (PFC). This integrated circuit (IC) provides both an on-chip reference and an external reference voltage to the system. It is designed to reduce the amount of harmonics generated by the power system and to optimize the power factor of the system. This ensures that the system will operate at peak efficiency, reducing energy costs for the user.

Application Field

The UCC28501NG4 is suitable for a wide range of PFC applications, from simple household appliances to industrial servers and large power systems. The IC\'s design simplifies the connection from the AC mains to the load, eliminating many components used in other PFC designs. It is also capable of operating in discontinuous conduction mode (DCM) applications, making it ideal for use in low power systems. This IC is capable of controlling both AC-DC and DC-DC converters, allowing it to be used in a wide range of power systems.

Working Principle

The UCC28501NG4 uses a current-mode control method to regulate the converters, making it highly efficient in both high and low power applications. The IC can be used to regulate both active and passive PFC converters. On a basic level, the IC monitors the line voltage of the power system and regulates the current output accordingly. The current mode control method also ensures that the voltage ripple is minimized, allowing the system to run at peak efficiency while also protecting the load from voltage spikes or other irregularities.The UCC28501NG4 also offers a complete protection system, which includes an over-temperature, over-voltage, and under-voltage protection feature. This helps ensure that the system remains stable and does not encounter any unexpected malfunctions, protecting the load from any potential damage.

Conclusion

The UCC28501NG4 integrated circuit is an excellent choice for Power Factor Correction applications. It provides both an external and on-chip reference voltages, simplifying the connection from the AC mains to the load, and is also capable of controlling both high- and low-power systems. The current mode control method used by the IC ensures that the voltage ripple is minimized, allowing the system to run at peak efficiency while still providing excellent protection features.

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