Drivers for Ultra-Compact LED Lamps
The first in a new family of mains-operated LED lamp drivers from STMicroelectronics  will enable designers to deliver more reliable and efficient LED retrofit lamps featuring primary-side current regulation. LED lighting, including retrofit bulbs, is expected to account for 80% of the lighting market by 2020 or sooner. Primary-Side Regulation (PSR) cuts bill-of-materials costs for retrofit bulbs, thereby reducing the payback time, while also simplifying design and reducing the space occupied by LED control circuitry.
The new HVLED805 integrates an 800V avalanche-rugged MOSFET, achieved using ST’s high-voltage integration process, which is higher than in competing devices and hence offers greater reliability. The high-voltage on-chip startup circuitry allows the device to start reliably when the AC line voltage is applied to the lamp.
Further technical information: