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LED Driver IC Touts High Efficiency, High Power Factor

Tue, 01/25/2011 - 5:52am
LED driver ICRenesas Electronics America Inc. announced the availability of its R2A20134 LED driver IC that supports LED lighting applications with high efficiency and a high power factor. The company’s voltage step-down control technology (single-stage) provides a high line-to-ground voltage. High-voltage control and critical-conduction mode enable zero-current switching at turn-on and switching in a low drain-source voltage state. As a result, the LED driver IC enables reduction of power loss during switching and achieves a power factor of 92 percent, according to the company, by reducing the power loss during switching. In addition, critical-conduction mode allows PFC (power factor correction) control using few external components and realizes a power factor of 0.9 or higher. A variety of control modes can be achieved by changing the configuration of the externally connected elements. Examples include buck-boost control, average-current control, peak-current control, and constant-input-power control. Renesas Electronics’ R2A20134 LED driver IC also can be employed in TRIAC dimmer applications by applying a voltage matched to the TRIAC phase to the FB (feedback) pin for constant-current control.

Renesas Electronics America Inc.
408-382-7500, www.renesas.com 
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