AC-DC Isolated Offline LED Controller for LED Lighting offered by Toshiba

Toshiba Corp. today announced the development of an ac-dc offline LED controller IC employing a single converter PFC for LED lighting and lighting equipment. The samples of the new TC62D902FG are currently available and the company will move to high-volume production in July. The new controller operates with a supply voltage of 85-264Vac, provides an output up to 20W to drive 3-8 LED in series at up to 1A and is offered in a SOP-8 package.

The new product is an isolated flyback LED power controller that was developed to meet demanding design criteria: support for triac dimming; high PFC and fewer external parts by achieving active PFC with a single converter; and no use of opto-couplers and detectors for average LED current control of the second side of the transformer. The power factor value (PF) is more than 0.8-0.9 with standard 120-220V AC, and the accuracy of LED output current is +/-5%.

LED lighting, now replacing incandescent, offers low power consumption and a long operating life. Toshiba is developing products that feature control of higher power LED, that support dimming and higher PF, and that deliver more accurate output current with higher efficiency. Pricing in production quantities will be 100 Yen each.