UCC38503DWTR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Mode:	Average Current
Frequency - Switching:	100kHz
Current - Startup:	150µA
Voltage - Supply:	9.7 V ~ 18 V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	20-SOIC
Base Part Number:	UCC38503

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UCC38503DWTR Application Field and Working Principle

Power factor correction (PFC) is an important aspect of modern electrical engineering and much of the technology we use today relies on power factor correction for enhanced performance. The UCC38503DWTR is a power factor correction application system made by Texas Instruments that helps improve the performance and efficiency of power systems in both domestic and industrial settings.The UCC38503DWTR is a single-stage PFC controller with integrated synchronous switching regulator and current-mode switching control. It is designed to reduce acoustic noise and minimize the device footprint, making it ideal for use in commercial and industrial applications. It also eliminates the need for compensation components, thereby reducing the bill of materials and boosting design flexibility and performance.The UCC38503DWTR is designed to be used with a wide variety of power supplies, ranging from three to 700V and offering both linear-power supplies and boosted PFCs. Its main focus is on controlling power and efficiency, regulating the output voltage and improving the power factor. The device uses a low-resistance current mode control loop and employs an enable signal, as well as an active power-limiting circuit, to ensure that the system won\'t over-power itself. Through the use of gain-setting resistors, the control loop can be easily tailored for a wide range of output-voltage applications. When it comes to its performance, the UCC38503DWTR offers three different operating modes, which are programmed by gain settings and enable signals: discontinuous-conduction-mode (DCM), continuous-conduction-mode (CCM), and variable frequency power factor correction mode. Each mode optimizes the performance of the power factor and the overall efficiency of the system. In the DCM mode, the UCC38503DWTR helps boost the power factor by guiding the current waveform to run in synchronicity with the voltage waveform. This helps increase the power efficiency as it reduces the amount of power/energy lost due to harmonic distortion. In the CCM mode, the controller starts a burst of current at the beginning of the operating cycle, allowing for a high power factor and improved efficiency. Finally, the variable frequency power factor correction mode helps keep the power factor within a specific range during the operating cycle. This helps to reduce harmonic distortion and improve the power factor, while still providing the ability to regulate the output voltage of the system.The UCC38503DWTR is capable of operating with a wide range of input voltages and frequencies and provides a variety of feedback signals and indicators. This includes an undervoltage lockout feature that helps protect the system from being over-powered. It also has a low-power-consumption mode that makes it ideal for energy-saving applications.Overall, the UCC38503DWTR is an ideal integrated solution for improving power systems in both domestic and industrial settings. It is designed for increased efficiency, power factor control, output regulation, and power savings. With its wide variety of features and versatile design, the UCC38503DWTR is a reliable and powerful PFC solution for all your power needs.

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