UCC28713DR

Voltage - Supply (Vcc/Vdd):	9 V ~ 35 V
Mounting Type:	Surface Mount
Supplier Device Package:	7-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width), 7 Leads
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	--
Fault Protection:	Current Limiting, Over Voltage
Frequency - Switching:	680Hz ~ 100kHz
Duty Cycle:	--
Series:	--
Voltage - Start Up:	21V
Topology:	Flyback
Voltage - Breakdown:	--
Internal Switch(s):	No
Output Isolation:	Isolated
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

UCC28713DR (referred to below UCC) is a highly integrated, wide input voltage range AC-DC (Alternating Current-Direct Current) converter with integrated feedback circuits and fast-transient protection. This makes it ideal for use in applications that require power supply from a wide range of sources, such as AC line connected charger systems, or solar powered systems. The UCC has an integrated. high-efficiency switched-mode topology which offers superior performance in reducing the amount of power used in the conversion process. It also provides a safe and reliable output voltage level which is essential for reliably powering most electronic systems.

Application Field

The UCC28713DR is ideal for use in a wide range of applications, such as switch mode power supplies, computer systems, communications systems, industrial equipment and consumer products. It is highly reliable, efficient and cost-effective, making it a popular choice for manufacturers looking for a product that provides superior performance. The UCC28713DR is also well suited for use in off-line flyback designs, considering its integrated feedback circuits and fast-transient protection.

Working Principle

The UCC28713DR works on a switched-mode topology principle, which is the most common form of AC-DC converter technology. In this type of conversion, alternating current is rectified to a direct current (DC) by using a rectifier. The DC voltage is then fed through an electronic switch (usually a transistor) to an energy storage device, called an inductor. The inductor stores the energy and releases it as a high voltage when the switch is opened. This high voltage is regulated and filtered to create a stable DC voltage. The frequency of the switching operation is determined by the PWM (Pulse Width Modulation) controller. The switching speed and power efficiency of the UCC28713DR are optimized by its integrated voltage mode PWM control and synchronous rectifier control.

Features

The UCC28713DR features a wide input operating range (85-265VAC). It is also designed to provide a relatively high power efficiency, which is important for applications that require low power consumption. Furthermore, the UCC28713DR is also equipped with integrated soft-start and fast-transient protection, which help reduce the amount of inrush current during startup, and protects the device from unexpected surges in input voltage. It also includes a programmable over-voltage protection circuit, which protects the device from damage caused by excessively high voltage input. Additionally, the UCC28713DR has an integrated UVLO (Under Voltage Lock Out) circuit which prevents it from attempting to switch at low input voltages.

Conclusion

The UCC28713DR is an excellent choice for applications that require high performance and cost-effective AC-DC converters. Its wide input operating range, integrated protection features and high power efficiency make it a suitable choice for a variety of applications. Its low noise output, tight regulation performance, and high temperature operating range further add to its appeal. The UCC28713DR is an ideal solution for manufacturers looking for a reliable and robust AC-DC converter.

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