UCC3973NG4

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The UCC3973NG4 from Texas Instruments is a floating ballast controller. It is targeted as an efficient replacement to traditional off-line, and non-dimmable drivers. It is a cost-effective and reliable solution that is widely used in applications such as Under-Counter Lighting, Troffers and High-Bay Lighting. It has several features that make it suitable for such applications, including a wide input voltage range, high efficiency, and integrated dimming support.

The UCC3973NG4 is a two-channel, low-cost, high-efficiency, high-speed, phase-shift control dimmer IC with advanced features, such as soft-start, pre-bias and over-current protection. It incorporates a robust 300 kHz PWM dimmer, as well as a high-speed DALI interface for switching and dimming. The device works in a continuous-conversion mode and is designed for use in buck-based isolated-flyback converters.

The UCC3973NG4 can support an input voltage range of 4.5 V to 42 V and is capable of providing an output current of up to 1.2 A and a maximum output voltage of 72 V. It is designed to perform arithmetically-accurate adjustments and dimming of a variety of lighting applications, including LED and fluorescent lamps, as well as incandescent lamps. The device includes a number of features to ensure reliable operation, including over-voltage, over-current, over-temperature and under-voltage protections.

The UCC3973NG4 features high-accuracy and fast output control, with the ability to control ramp rates of up to 10kHz. It offers flexible dimming, including pulse-width-modulated (PWM) dimming, and 0 to 100% smooth dimming. It also supports superior accuracy, with a differential gain of up to 0.2%. The device is easily integrated into systems, thanks to its low component count—just an opto coupler and an external inductor are needed for operation.

In addition, the device offers a wide range of input and output configuration options, so it can be easily adapted to the specific requirements of the application. This flexibility is further enhanced by the on-chip programmable logic, which provides the flexibility to program a variety of sequences and control algorithms.

The UCC3973NG4 is an ideal solution for a variety of lighting applications, especially those that require dimming. Its flexibility and wide range of features make it a reliable and cost-effective choice. Given its robust design and efficient performance, it is well-suited to a wide range of lighting applications, including Under-Counter Lighting, Troffers and High-Bay Lighting.

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