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AC-DC Power Controller Family for Dimmable LED Lighting

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A cost-effective solution for both non-dimmable and dimmable LED lighting, delivers high efficiency while meeting EnergyStar requirements. The CY8CLEDAC01/02 controllers 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 AC-DC 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 (OVP), output short circuit protection (OSCP), peak current limit protection (PCLP), current-sense resistor short protection (CSSP) and over-temperature protection (OTP). 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.

Cypress Semiconductor
San Jose, CA.
(408) 943-2600.
[www.cypress.com].