UBA2015P/1,112

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UBA2015P/1,112 Application Field and Working Principle

The UBA2015P/1,112 is a ballast controller integrated circuit, brought to the market by Texas Instruments. It is an integrated solution geared toward lighting applications and enabling designers the flexibility of adding a number of features whilst keeping a design free of bulky external components. The circuit is an isolated, phase-controlled, high-reliability, two-switch device, referred to as a ballast controller. Its purpose is to provide ballast control and monitoring in lighting systems.

Application Field

The UBA2015P/1,112 ballast controller is suited for a number of general, industrial and commercial lighting applications. Examples include: fluorescent lights and neon lighting in commercial, home and office spaces; conventional and dimmable incandescent lamps; low-power LED applications; and automotive lighting.

Working Principle

The ballast controller is based on a two-switch topology which allows for very efficient operation by actively controlling the run-up and run-down of the lamp current. Initially, the lamp current is held constant at a pre-programmed level, then it is actively varied over time according to current and voltage regulation rules.

There are multiple methods of dimming and power detection, including phase-controlled, dimmable incandescent lamps and auto-sensing lamps, support for both light-operated and hand-regulated dimming, and lamp-failure detection. Additionally, the device features overvoltage and undervoltage protection, overcurrent protection and active current limiting.

The UBA2015P/1,112 ballast controller simplifies and optimizes the architecture of ballast control systems. For example, it allows developers to replace bulky heatsinks and transformers, greatly reducing the size and cost of lighting systems. The device also supports flexible dimming, power monitoring and lamp failure detection. It is also capable of providing active current limiting and protection against over voltage, under voltage and over current. This device makes it possible to reduce development times and cost, while increasing the efficiency and reliability of lighting systems.

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