Optoelectronics
New Power Factor Corrected LED Driver from ON Semiconductor Supports TRIAC Dimming for Residential and Commercial Lighting Applications
ON Semiconductor a premier supplier of high performance, energy efficient silicon solutions for green electronics, has announced the launch of a new power factor corrected dimmable LED driver for residential and commercial lighting applications.
HousTypical applications include LED driver power supplies, LED-based down lights, TRIAC dimmable LED-based lamps and power factor corrected constant voltage supplies. This device is compatible with both leading edge TRIAC-based and trailing edge transistor-based dimmers. Depending on the dimmer used, the LED output can be controlled down to < 2 percent.
Three up to 15 W reference designs are provided and are intended to drive from 4-15 LEDs at 350 mA. They can however, be easily modified to support power levels ranging from 5 W to 30 W:
Ÿ NCL30000LED1GEVB: 115 Vac version, 90 to 135 Vac input line (TRIAC Dimmable)
Ÿ NCL30000LED2GEVB: 230 Vac version, 180 to 265 Vac (TRIAC Dimmable)
Ÿ NCL30000LED3GEVB: Extended universal version, 90 to 305 Vac
An operating temperature range of -40°C to +125°C ensures the NCL30000 can be used across environmental operating ranges specified in the majority of solid state lighting applications. The NCL30000 has a low startup current of 24 micro amps (µA) (typical) and a low operating current of 2 milli amps (mA) (typical) that helps support high efficiency designs.
Other key features of the NCL30000 include a programmable on time limiter, zero current detect sense block, gate driver, plus all other pulse width modulation (PWM) circuitry and protection functions needed to implement a CrM switch mode power supply. The NCL30000 is the key device in a fully tested, GreenPoint® reference design for offline high power factor triac dimmable LED drivers intended for ENERGY STAR® commercial and residential luminaires. The reference design documentation can be found along with the other reference designs listed above on the ON Semiconductor website.
“Our customers have a need for dimmable LED driver solutions that are compatible with existing wiring and controls,” said Christophe Warin, AC-DC business unit manager at ON Semiconductor. ”The NCL30000 offers excellent dimming performance down to greater than 2 percent. This device is ideally suited for isolated flyback but can also be used with non-isolated buck topologies.”
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