UCC28C43DRG4

Frequency - Switching:	--
Base Part Number:	UCC28C43
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 105°C (TJ)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	96%
Series:	--
Voltage - Supply (Vcc/Vdd):	7.6 V ~ 18 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Flyback, Forward Converter
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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UCC28C43DRG4 is a DC-DC switching controller specifically designed to make power supply applications more energy efficient. It is a member of the Texas Instruments UCC28 family of high-efficiency, high-frequency converters. The UCC28C43DRG4 allows a wide range of DC-DC topologies to be implemented, as it can be used in step-down, step-up, and buck-boost DC-DC converters. It contains advanced features such as a configurable voltage loop bandwidth for optimized transient response, adjustable overshoot and undershoot prevention to reduce output voltage ripple, high-threshold switching to minimize switching losses, configurable soft-start and power-good functions to increase system reliability, and a self-oscillating accurate internal comparator. It also includes an integrated temperature protection function to prevent over temperature damage. The UCC28C43DRG4 is ideal for applications such as AC-DC and DC-DC power supplies, automotive entertainment systems, and industrial distributed power systems. It is a highly efficient switching regulator, with few external components needed for a variety of operating conditions. It has a wide temperature range of -40 to 150°C, and industrial standard packages that offer protection from reverse current and transient voltage spikes. The UCC28C43DRG4 works by implementing a feedback loop, with the output voltage monitored by a high-frequency PWM controller with a configurable bandwidth and a voltage error amplifier. A high-voltage MOSFET driver feeds an external MOSFET to provide wide-range instantaneous peak current limit and controlled current limit that prevents overcurrent damage. The built-in soft-start and power-good features further ensure increased system reliability.The UCC28C43DRG4 also includes an adjustable high-threshold current-sensing circuit which eliminates the need for current sensing resistors and reduces switching losses. Furthermore, the adjustable overshoot and undershoot prevention function minimizes voltage ripple, providing a smooth and accurate output voltage. It can also be programmed to perform a single-cycle current limit for increased system safety. It also has an adjustable low-side gate drive for enhanced shutoff capability.In conclusion, the UCC28C43DRG4 is a high-performance DC-DC switching controller specifically designed for efficient power supply applications. It can be used in a variety of topologies, including step-down, step-up, and buck-boost converters. It offers numerous features such as adjustable voltage loop bandwidth, adjustable overshoot and undershoot prevention, configurable soft-start and power-good functions, a self-oscillating accurate internal comparator, and an integrated temperature protection function. In addition, it includes a wide temperature range of -40 to 150°C and industrial standard packages, making it ideal for AC-DC and DC-DC power supplies, automotive entertainment systems and industrial distributed power systems.

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