Cypress MicroSystems offers an electronic ballast design example using its award-winning programmable system on chip (PSoC) mixed-signal array with an embedded microcontroller. The flexibility of PSoC allows the design engineer to streamline the development of electronic lighting systems. This design example highlights the single-chip electronic dimming ballast controller that includes digital addressable lighting interface (DALI) communication capability. The PSoC family of products provides an easy-to-use, cost-effective solution for engineers building advanced lighting designs.
"30 to 40% of the energy used in a typical building is for lighting," said Nathan John, director of strategic marketing for Cypress MicroSystems. "DALI ballasts enable central digital control of fluorescent lighting fixtures, providing the capability to dim individual fixtures in response to changes in ambient light; this 'light harvesting' results in substantial energy savings. Using PSoC, designers can quickly implement complete DALI lighting solutions that are fast, inexpensive and highly reliable."
The PSoC lighting solution enables 1-100% dimming, yielding a considerable energy saving. PSoC manages both the ballast control functions as well as the communication between lighting fixtures and their controllers. This is in contrast to other solutions that require two devices to perform the dimming ballast capability: one chip to control the ballast function and one chip to manage the communication interface. PSoC-based electronic ballast designs typically require a bill of materials with fewer than 90 parts, contributing to a considerable cost reduction over competing solutions.
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