Highly efficient digital power controllers suit LED lighting

Cypress Semiconductor Corp. announces new 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 minimizes component count to reduce board space, power consumption, and overall BOM costs compared to other isolated solutions. The new controllers also feature circuit protection not normally available with other primary-side control solutions. 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. Reference designs for both the CY8CLEDAC01 and CY8CLEDAC02, including all schematics, BOM, gerber files, and documentation to create a power supply for a fully functional LED retrofit bulb, are available at the company’s website.

The new controllers expand Cypress’ 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. Together, the ac-dc family and Cypress’s PowerPSoC family cover a wide range of LED applications, from LED retrofit bulbs to high-end LED luminaires that require a variety of functions (communications, diagnostics, color-changing, etc). Cypress will demonstrate the new controllers, the PowerPSoC solution, and its newly announced Powerline Communication solution at the Light+Building exhibition from April 11-16 in Hall 4, Stand E15 at the Frankfurt Fair and Exhibition Center in Frankfurt, Germany.

For more information, contact Cypress Semiconductor Corp., 198 Champion Ct., San Jose, CA 95134. Phone: (408) 943 2600.

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