Seoul Semiconductor AC LED Module Achieves 150lm/W

Seoul Semiconductor - LED 5630 D module next to NanoDriver

The South Korean firm, Seoul Semiconductor has demonstrated an AC LED module that achieves an efficacy of 150lm/W. The company developed this demonstration module using the NanoDriver Series LED driver configured for optimum efficiency. The module uses the Acrich MJT 5630 LEDs characterized at 5000K and CRI 80, at 25°C ambient temperature and operated at 6V.

Before Seoul Semiconductor’s recent product introduction, many LED fixture developers saw AC LED technology as a low performance, low-cost solution, and they assumed that AC LED technology had compromised performance, thereby restricting its applicability. Seoul Semiconductor’s demonstration shows that it is possible to produce a high efficacy, low flicker solution utilizing AC LED technology.

The module uses a total of 74 LED chips configured in two series of 37 chips each. At a voltage of 230 and a power of 96.3 mA and a PF of .902, the device produced 3058 lms for an efficacy of 153.7 LPW. And the 50 Hz device accomplished this with a flicker of just 14.2 %.

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Seoul Semiconductor 150LPW AC LED module reference design

Seoul Semiconductor 150LPW AC LED module reference design

“The NanoDriver Series LED drivers will have a significant impact on LED fixture design by bringing a miniature, low cost, high-performance module solution to the lighting industry,” said Keith Hopwood, executive vice president at Seoul Semiconductor.

“The NanoDriver Series devices enable fixture designers to significantly reduce the size, weight, and volume of their luminaire designs,” said Hopwood. “The NanoDriver’s efficacy, low flicker, and miniature size is the result of Seoul Semiconductor’s continued research and development into AC LED technology, delivering a less bulky and highly efficient design to our customers.”

AC LED NanoDriver for flush mount, wall sconce, vanity, and downlight applications

According to Seoul, the NanoDriver Series is perfect for applications including flush mount, wall sconce, and vanity lighting, as well as down-lighting. The small size of the NanoDriver Series enables ultra-thin and novel fixture configurations. Furthermore, the company says that the series makes conventional lamp replacement possible without requiring a large volume recess for the driver, or a reduction in the light output. Previously it was difficult to convert many conventional fixture designs to LEDs because the configurations offered no space for the LED driver.

The NanoDriver Series devices can work for luminaire designs up to 3,000 lumens. Thus, the Series makes possible the integration of the control circuitry with the external converter. This also facilitates the capability of mounting more light sources on a board or reducing the total size of the fixture and mounting plate.

Additionally, the company contends that the NanoDriver Series devices are small and lightweight enough to make airfreight economical, which reduces lead time and streamlines the supply chain. The NanoDriver Series LED drivers are available immediately from Seoul Semiconductor. For more about the 150lm/W solution please visit: