sijeo.philip
Newbie level 3
Hi,
I am trying to design a LED Driver of 12W(24v/0.5A) output , where I can keep the voltage constant and vary the current. i.e. I would like to understand if we can vary the current by introducing the current control loop in the SMPS /Driver itself...
i.e. Inner control loop which would supply the desired current to the LEDs (Thus enabling dimming )
and outer voltage loop that would be keeping the voltage constant at minimum current to maximum current.
I am attempting to understand if we can achieve dimming of LEDs without introducing transistors in the LED string and use PWM to get the dimming effect.
I am trying to design a LED Driver of 12W(24v/0.5A) output , where I can keep the voltage constant and vary the current. i.e. I would like to understand if we can vary the current by introducing the current control loop in the SMPS /Driver itself...
i.e. Inner control loop which would supply the desired current to the LEDs (Thus enabling dimming )
and outer voltage loop that would be keeping the voltage constant at minimum current to maximum current.
I am attempting to understand if we can achieve dimming of LEDs without introducing transistors in the LED string and use PWM to get the dimming effect.