UCC38503DWG4

Series:	--
Packaging:	Tube
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

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

The UCC38503DWG4 is a cost-effective, integrated Power Factor Correction (PFC) controller from Texas Instruments. The chip provides superior energy efficiency, low component count, and a wide range of operating conditions for designers of PFC applications. The UCC38503DWG4 supports a full range of external components and is designed for operation at or above 500kHz. It provides designers with the flexibility to adjust critical parameters such as switching frequency, switching duty cycle, and PFC input voltage range, to meet the needs of a wide variety of applications.

Application Field of UCC38503DWG4

The UCC38503DWG4 is a circuit component used in a variety of PFC applications, ranging from power supplies, to power management and solar power plants. Its ability to perform with up to 90% efficiency in a wide range of operating conditions makes it an excellent choice for high power applications such as power plants, and high efficiency applications such as solar panel systems. In addition, due to its low component count, the UCC38503DWG4 can also be used in applications where space and cost are at a premium, such as AC/DC power adapter designs. The chip\'s accuracy and wide range of parameters for adjustment also make it an ideal choice for designs that require maximum output power accuracy and consistency.

Working Principle of UCC38503DWG4

The UCC38503DWG4 employs two integrated circuits, the first of which is a voltage mode PFC controller, and the second of which is a gate drive IC. The combined circuit works by first regulating the incoming voltage and then controlling the output power.In order to regulate the input voltage, the voltage mode PFC controller monitors the input voltage and then adjusts the PWM switching frequency and duty cycle to ensure an accurate and consistent input voltage. Once the voltage is stable, the gate drive circuit then takes over and drives the power transistors at the correct voltage and frequency. This ensures a smooth, high-frequency output from the power transistors. The UCC38503DWG4 also incorporates over-temperature protection and an integrated soft-start capability. The former ensures that the chip does not overheat and damage itself, while the latter ensures that the chip does not experience an excessive inrush current when it is first turned on.

Conclusion

The UCC38503DWG4 is a cost-effective, integrated PFC controller from Texas Instruments. Its wide range of parameters and its ability to provide up to 90% efficiency in a wide range of operating conditions make it an excellent choice for PFC applications demanding high efficiency and accuracy. Additionally, its low component count and its integrated over-temperature protection and soft-start capability make it an ideal choice for applications such as AC/DC power adapters, power plants and solar power systems.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description