Mean well 90w single output switching dimmable led power supply lpf 90d series mean well lpf 90d 24 p the mean well lpf 90d 24 is a 90w single output switching dimmable led power supply from the lpf 90d series this led power supply features a wide input range of 90 to 305v ac a built in active pfc function and is equipped with a three in one dimming function br with the psu s design flexibility it is possible using 1 to 10vdc pwm signal or by changing resistance to achieve brightness