UBA2014T/N1,518 Integrated Circuits (ICs)

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UBA2014T/N1,518 is a PMIC - Lighting, Ballast Controllers, which has application field and working principle. In terms of application, this component can be used to control the ballast system and to protect the above circuits against short circuit, overvoltage and overcurrent. This component has internal temperature protection and low component temperature drift, making it quite suitable for controlling ballast systems.

In terms of working principle, UBA2014T/N1,518 could be roughly divided into two parts. The first part is the voltage detection circuit. This component mainly consists of a voltage detector and an opto-isolator. The voltage detector circuit is based on a voltage comparator, which can detect the voltage difference between the two sides of the converter. When the voltage of the converter is lower than the threshold voltage, the detector will detect the voltage difference and send the feedback information through the opto-isolator. This opto-isolator is used to protect the two sides from each other.

The second part is the power switch. This component mainly consists of a power MOSFET and a gate driver circuit. The power MOSFET will bypass the power wheel according to the feedback information from the opto-isolator. When the voltage of the converter is higher than the threshold voltage, the power MOSFET will be turned on, and the power wheel will be controlled by the input signal given by the gate driver circuit. During power on and power off, the current of the power wheel will be monitored and will be limited according to the limitation given in the application circuit. This will prevent any overcurrent or short circuit happening.

Generally speaking, by integrating the voltage detection circuit and the power switch circuit, UBA2014T/ N1,518 can effectively protect the ballast system against short circuit, overvoltage and overcurrent. Furthermore, it demonstrates excellent performance in terms of temperature protection, low component temperature drift and fast response. Currently, UBA2014T/N1,518 is increasingly used in the field of ballast system control.

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