UCC3580D-1G4

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UCC3580D-1G4 Application Field and Working Principle

The UCC3580D-1G4 is a DC-DC switching controller from Texas Instruments that provides an excellent balance between cost efficiency, performance and ease of use. It is a PWM-type switcher that is used to regulate the voltage between two DC buses. It is ideal for distributed power supplies, charge pumps, active ORing, bus voltage tracking, current-limited supply for safely operating low-voltage systems, and power supply sequencing applications.

The UCC3580D-1G4 is a cost-effective, adjustable high-voltage, low-current DC-DC switching controller that is suitable for a variety of applications. It comes in packages ranging from the very small SOT23-5 to SOIC-8. It has a wide operating temperature range of -40 to 125°C and can be used in the most demanding industrial and automotive environments. It is also rated to survive up to 3.6 kV isolation.

The UCC3580D-1G4 is a flexible controller that provides on-chip logic and control. It has a PWM generator circuit with dead-time control, logic error reporting and a load current regulation loop for constant output voltage. It also features programmable features like line and load regulation, dead-time control, automatic frequency control and fault reporting.

The basic operating principle of the UCC3580D-1G4 is to maintain a constant output voltage by regulating the on-time of the switching main field-effect transistor (MOSFET). The load is sensed by a current-sense resistor connected between the load and the controller. The current is monitored by the controller, and the PWM signal generator is adjusted accordingly. This ensures that the output voltage is maintained at the desired level regardless of changes in the load current.

The UCC3580D-1G4 operates as a switch mode regulator, switching on and off in a specific pattern to maintain a constant output voltage. It has two voltage sample pins that sense the output voltage, and an adjustable dead-time control pin that determines the peak pulse width of the MOSFET. The dead-time can be adjusted to provide the optimal balance of switching performance and efficiency.

The UCC3580D-1G4 is designed to operate over a wide input voltage range, from 8V to 38V. It is capable of providing output power up to 20W with an efficiency of up to 93% over a wide load range. It has a low output voltage ripple and a fast transient response, and provides excellent stability with a wide variety of external components, making it suitable for high-power, high-efficiency applications.

The UCC3580D-1G4 is a robust and reliable little controller that is easy to use and configure. Its adjustable features allow it to be used in a wide variety of applications, and its wide operating temperature range makes it suitable for even the most demanding environments. Its high efficiency, low output voltage ripple and fast transient response make it an ideal choice for distributed power supply, charge pump and active ORing applications.

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