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AC/DC digital power controllers

Cypress Semiconductor has introduced AC/DC digital power controllers for LED lighting. The CY8CLEDAC01/02 controllers offer a cost-effective solution for both non-dimmable and dimmable LED lighting, delivering high efficiency while meeting EnergyStar requirements. They provide automatic dimmer detection, so they work with the majority of the existing installed base of wall dimmers, providing dimming down to 2% with no flicker. The new controllers offer primary-side sensing with tight LED current regulation, eliminating the need for opto-isolation and other secondary-side control circuitry. This technique minimises component count to reduce board space, power consumption, and overall BOM costs compared to other isolated solutions. The new controllers also feature circuit protection. The built-in protection features include over-voltage protection, output short circuit protection, peak current limit protection, current-sense resistor short protection, and over-temperature protection. The new controllers expand the solution’s lighting portfolio to effectively cover LED retrofit bulbs. They complement the PowerPSoC family of embedded power controllers, a single-chip solution for both controlling and driving high-power LEDs. The controllers are both offered in 8pin SOIC packages.