Jun 10, 2009 #1 E eem2am Banned Joined Jun 22, 2008 Messages 1,179 Helped 37 Reputation 74 Reaction score 24 Trophy points 1,318 Activity points 0 led overcurrent. hello when i switch on my LED driver, it puts an overcurrent surge of 2 Amps through the 700mA LEDs for about a millisecond. This happens every time the LEDs are switched on (about three times a day) Will this affect the lifetime of the LEDs? this is the LED datasheet but does not tell it. https://www.philipslumileds.com/pdfs/AB11-A.PDF
led overcurrent. hello when i switch on my LED driver, it puts an overcurrent surge of 2 Amps through the 700mA LEDs for about a millisecond. This happens every time the LEDs are switched on (about three times a day) Will this affect the lifetime of the LEDs? this is the LED datasheet but does not tell it. https://www.philipslumileds.com/pdfs/AB11-A.PDF
Jun 10, 2009 #2 G Githin Junior Member level 2 Joined Jun 7, 2009 Messages 22 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Clemson, SC, USA Activity points 1,467 Re: led overcurrent. Are you using a current source or voltage source? Having more current will surely decrease the lifetime. But by "how much", will need some research! The data sheet tells the right way to turn on the LED.
Re: led overcurrent. Are you using a current source or voltage source? Having more current will surely decrease the lifetime. But by "how much", will need some research! The data sheet tells the right way to turn on the LED.
Jun 10, 2009 #3 E eem2am Banned Joined Jun 22, 2008 Messages 1,179 Helped 37 Reputation 74 Reaction score 24 Trophy points 1,318 Activity points 0 led overcurrent. they are current driven but the current surge happens b4 the current controller powers up. it is transient overshoot due to power up into the LC resonances of the LC filters of the EMC filters and Boost converter L and C. it is not possible to mitigate without increasing component count too much
led overcurrent. they are current driven but the current surge happens b4 the current controller powers up. it is transient overshoot due to power up into the LC resonances of the LC filters of the EMC filters and Boost converter L and C. it is not possible to mitigate without increasing component count too much