Renesas Electronics America Introduces LED Driver IC for LED Lighting Applications
Renesas 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 at low cost.
Renesas Electronics’ exclusive voltage step-down control technology (single-stage) provides a high line-to-ground voltage. In addition, the ability to select low-voltage MOSFETs (voltage tolerance of only 500 to 300V, rather than the typical 700V) further contributes to lower system cost.
The use of Renesas Electronics’ exclusive 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 new LED driver IC enables reduction of power loss during switching and achieves the industry-leading power factor of 92% 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. The company additionally supplies drive MOSFETs meeting a variety of power and performance requirements.
Samples of Renesas Electronics' new LED driver IC will be available starting in December 2010, priced at US$1 per unit. Mass production is scheduled to begin in March 2011 and is expected to reach 3,000,000 units per month.
