UCC3580N-3

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The UCC3580N-3 is a part of the PMIC (Power Management IC) collection of voltage regulators. This DC-DC Switching controller possesses the capacity to control DC/DC buck converters in sequence with input voltages ranging from 4.0V to 24V. It is customized for leveraging both voltage and current mode control principles. The device is specially designed for Voltage Mode applications and hence, very much suitable for sensor, LED driver, and audio amplifier plants. It effectively reduces the size of products and board space including offering higher efficiency and constant output current. The device also encompasses 0.8V tolerance of output voltage.

Working Principle

The external synchronous rectifier is used by the UCC3580N-3 to pass the PWM input of highest voltage that is greater than the value of the feedback voltage. The particular PWM must be obtained from any intentional or external PWM. A constant frequency of fixed frequency is obtained by pulse width modulating which leads to producing a good control. A voltage loop feedback is used to monitor the output voltage and it sets a certain limit to increase or decrease the output voltage according to the requirement.

It is ensured by the UCC3580N-3 that the voltage regulator sends very less current or no current factually to the top switch until the output voltage is lesser than the feedback voltage. In the same way, it prevents the current from flowing until the voltage output is greater than the feedback voltage. The output voltage remains constant within the range as the Pulse Width Modulation is directly proportional to the output voltage.

Application Field

The UCC3580N-3 consists of several specifications and qualities which makes it suitable for different application fields. It is gaining recognition for offering lower electromagnetic interference with driving MOSFETs, system protection schemes and further low-cost implementation.

With its constant output current release, the device is best suited for portable audio amplifiers or LED driver applications. It also serves a well in backlight applications offering improved efficiency. It is also used in many biomedical as well as industrial control systems where the user is not required to offer a separate application load. It provides the perfect solution for creating a lower dissipation and less temperature controller.

Additionally, it is also an ideal fit for automotive products and auxiliary DC/DC products. It is known for its long-term stability and can be used in power supply generator, workstation systems and thin-client computer applications. It is known for improving the efficiency and putting less stress on other DC supplies.

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