Electronic and information engineering department of the Hong Kong polytechnic university researchers recently developed high-performance LED driver, can make the LED light more bright and energy saving.
The new drive the innovation of multilevel PWM technology for the LED power supply, and compared the current LED products using PWM and linear drive, this technique significantly improves the light quality and energy efficiency. This way is not limited to the LED driver, and can provide more benefits than PWM or constant current mode and choice.
The traditional way of PWM, LED is pulsed current, rather than dc. This kind of drive current to the human eye is unable to detect the speed of the fast switch. Based on pulse current LED power supply to make the output light is easier to control.
Dr By Lai Yuk Ming, Dr Loo Ka Hong and professor MichaelTse was established by the research team, they has carried on the transformation to PWM mode. Pulsed operation is to maximize the light output while minimizing thermal energy consumption way to redesign. To get a higher luminous efficacy (lm/W). Dr Loo Ka Hong said their technology could be 15% energy saving.
Compared with traditional way, it is low cooling requirements, required less heat sink. This means that the LED systems can do more. Owing to excellent ability in dimmer, the new PWM drive allowing producers to produce all that move light LED, dimming performance to be as low as 0 watts. These superior quality can be made brighter more intelligent and more durable LED lighting solution.