UCC28221DR

Voltage - Supply (Vcc/Vdd):	8.4 V ~ 14.5 V
Base Part Number:	UCC28221
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-55°C ~ 150°C (TJ)
Control Features:	Soft Start
Fault Protection:	Current Limiting, Over Voltage
Frequency - Switching:	2MHz
Duty Cycle:	75%
Series:	--
Voltage - Start Up:	13V
Topology:	Flyback
Voltage - Breakdown:	--
Internal Switch(s):	No
Output Isolation:	Isolated
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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The UCC28221DR is an integrated circuit (IC) commonly used in power management applications such as AC/DC converters, offline switchers and other power system applications. This IC is designed to provide a complete buck-boost solution with integrated synchronous rectification.The primary application of the UCC28221DR is to manage power and provide a compact, cost-effective solution that requires minimal external components. The IC requires input, output and ground pins, along with three additional power pins. The input voltage range of the UCC28221DR IC is from 1.5V to 6V, which could be raised up to 65V at higher power levels. The output current of the IC can range up to 6A, utilizing a peak efficiency of up to 94%.The UCC28221DR is a highly efficient and robust IC, capable of providing complete DC-DC conversion with minimal external components. An onboard circuit for controlling input/ output signals enables a complete power management solution. Automatic ground sensing allows the IC to adjust its output voltage according to the load variations. An operating frequency of up to 500 kHz ensures a fast response to load changes. The IC also provides protection against transient and overload conditions.The UCC28221DR\'s working principle involves the use of two switches which alternate the input voltage with a certain frequency and convert it into a form suitable for powering up a load. The two main components of the IC are the Pulse Width Modulation (PWM) generator and the output stages. The PWM generator sets the pulse width of the output signal to meet the specified output voltage. The output stages include two switches, usually placed in an H-bridge configuration, which alternately switch the input voltage and convert it into the specified output voltage. The regulator circuit ensures the accuracy of the output signal by adjusting the pulse width.The UCC28221DR is an efficient, integrated power management solution providing a highly precise output voltage and current control. It is mainly used in AC/DC converters, offline switchers, and other power system applications. The IC\'s wide input and output voltage range, as well as its integrated protection features make it an ideal solution for power management applications.

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