UCC28510N

Series:	--
Packaging:	Tube
Part Status:	Active
Mode:	Average Current
Frequency - Switching:	200kHz
Current - Startup:	100µA
Voltage - Supply:	9.7 V ~ 18 V
Operating Temperature:	-40°C ~ 105°C
Mounting Type:	Through Hole
Package / Case:	20-DIP (0.300", 7.62mm)
Supplier Device Package:	20-PDIP
Base Part Number:	UCC28510

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Introduction to UCC28510N

UCC28510N is an integrated device developed by Texas Instruments, that performs power factor correction (PFC) in AC/DC power converters. It is a switching regulator controller capable of controlling current and voltage, specifically designed for high power density single-phase AC-DC applications, such as laptop systems, flat-panel and LCD displays. The UCC28510N features a pulse frequency modulation (PFM) current mode controller anda voltage mode converter.

Application of UCC28510N

UCC28510N is applicable for a majority of AC/DC applications with power supplies rated for up to 500 Watts. This controller is ideal for high power density applications that require efficient, small form factor and low cost. The UCC28510N is compatible with a wide range of switching cables, FETs and transformers without restricting the choice of external components. Thus, the usability of UCC28510N for applications such as digital power supplies, LCD and plasma displays, desktop systems, notebook systems and set-top boxes is ideal.

Features of UCC28510N

The UCC28510N features a wide operating range of 180V AC - 264V AC, and an operating frequency range of 15 kHz to 500 kHz. It also includes a wide range of integrated protection features, such as open/short loop protection, over-voltage/over-current protection, pulse-by-pulse current limiting and thermal shutdown, providing greater reliability and minimum system external component cost. It also has a low power standby mode that can be used to reduce system power consumption during standby mode.

Working Principle of UCC28510N

The UCC28510N operates using Pulse Frequency Modulation (PFM) to achieve power factor correction. PFM is a technique used to regulate power in an AC/DC system, that works by modulating the pulse width of the output over a fixed frequency range. This technique allows the UCC28510N to maintain voltage or current regulation throughout the full line input range, while still delivering low harmonic distortion and high efficiency.The PFM mode is enabled when the output current of the converter exceeds a certain set threshold level. The UCC28510N will reduce the switching frequency when the load current increases, and will reduce the output ripple and peak current in order to maintain a constant power output. This way the UCC28510N will be able to reduce power losses, increase efficiency, and make the system more robust against load transients.

Conclusion

UCC28510N is an integrated device designed for high power density single-phase AC/DC applications that require efficient, small form factor and low cost. It operates using Pulse Frequency Modulation (PFM) to achieve power factor correction, and features a wide operating range as well as integrated protection features, making it ideal for applications such as digital power supplies, LCD and plasma displays, desktop systems, notebook systems and set-top boxes.

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