eem2am
Banned
Hello,
I start off with secret number one..............
when you compensate a switch mode led driver with a series led string with n LEDs, you must remember that the LED string is actually the upper divider resistor, of the feedback divider.
Also, the Output Pole is 1/(2*pi*R*C)
where R = n * Each LED's dynamic resistance
where the dynamic resistance = the v.i gradient at the current value.....got from the datasheet.
I start off with secret number one..............
when you compensate a switch mode led driver with a series led string with n LEDs, you must remember that the LED string is actually the upper divider resistor, of the feedback divider.
Also, the Output Pole is 1/(2*pi*R*C)
where R = n * Each LED's dynamic resistance
where the dynamic resistance = the v.i gradient at the current value.....got from the datasheet.